CCNA 1 v7.0 Final Exam Answers Full – Introduction to Networks Flashcards

Question

26. A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows? The data flow is being tracked based on the destination MAC address of the technician PC. The data flow is being tracked based on the source port number that is used by each application. The data flow is being tracked based on the source IP address that is used by the PC of the technician. The data flow is being tracked based on the destination IP address that is used by the PC of the technician. Explanation:

Answer 1

26. A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows? The data flow is being tracked based on the destination MAC address of the technician PC. The data flow is being tracked based on the source port number that is used by each application. * The data flow is being tracked based on the source IP address that is used by the PC of the technician. The data flow is being tracked based on the destination IP address that is used by the PC of the technician. Explanation:

Answer 2

27. A network administrator is adding a new LAN to a branch office. The new LAN must support 61 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.240 255.255.255.224 255.255.255.192 * 255.255.255.128

Answer 3

192.168.0.0 /24 192.168.0.192 /27 -> Network C 192.168.0.228 /32 192.168.0.0 /25 -> Network A 192.168.0.224 /30 -> Network D 192.168.0.128 /26 -> Network B

Answer 4

29. What characteristic describes a DoS attack? the use of stolen credentials to access private data a network device that filters access and traffic coming into a network software that is installed on a user device and collects information about the user an attack that slows or crashes a device or network service *

Answer 5

TCP - FTP HTTP SMTP UDP - DHCP TFTP

Answer 6

31. What service is provided by SMTP? Allows clients to send email to a mail server and the servers to send email to other servers. * Allows remote access to network devices and servers. Uses encryption to provide secure remote access to network devices and servers. An application that allows real-time chatting among remote users.

Answer 7

32. Which scenario describes a function provided by the transport layer? A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network. A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header. * A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window. * A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.

Answer 8

*Layer 2 destination address = 00-00-0c-94-36-ab Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.200 Layer 3 source address = 172.16.10.200* Layer 2 destination address = 00-00-0c-94-36-dd Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.200 Layer 3 source address = 172.16.10.200 Layer 2 destination address = 00-00-0c-94-36-cd Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.99 Layer 3 source address = 172.16.10.200 Layer 2 destination address = 00-00-0c-94-36-ab Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.200 Layer 3 source address = 172.16.100.200

Answer 9

34. What does the term “attenuation” mean in data communication? strengthening of a signal by a networking device leakage of signals from one cable pair to another time for a signal to reach its destination loss of signal strength as distance increases *

Answer 10

The entire command, configure terminal, must be used. The administrator is already in global configuration mode. The administrator must first enter privileged EXEC mode before issuing the command. * The administrator must connect via the console port to access global configuration mode.

Answer 11

36. Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.) TCP IP UDP POP * DNS * Ethernet

Answer 12

37. A company has a file server that shares a folder named Public. The network security policy specifies that the Public folder is assigned Read-Only rights to anyone who can log into the server while the Edit rights are assigned only to the network admin group. Which component is addressed in the AAA network service framework? automation accounting authentication authorization *

Answer 13

38. What three requirements are defined by the protocols used in network communcations to allow message transmission across a network? (Choose three.) message size * message encoding * connector specifications media selection delivery options * end-device installation

Answer 14

39. What are two characteristics of IP? (Choose two.) does not require a dedicated end-to-end connection * operates independently of the network media * retransmits packets if errors occur re-assembles out of order packets into the correct order at the receiver end guarantees delivery of packets

Answer 15

40. An employee of a large corporation remotely logs into the company using the appropriate username and password. The employee is attending an important video conference with a customer concerning a large sale. It is important for the video quality to be excellent during the meeting. The employee is unaware that after a successful login, the connection to the company ISP failed. The secondary connection, however, activated within seconds. The disruption was not noticed by the employee or other employees. What three network characteristics are described in this scenario? (Choose three.) security * quality of service * scalability powerline networking integrity fault tolerance *

Answer 16

41. What are two common causes of signal degradation when using UTP cabling? (Choose two.) improper termination * low-quality shielding in cable installing cables in conduit low-quality cable or connectors * loss of light over long distances

Answer 17

42. Which subnet would include the address 192.168.1.96 as a usable host address? 192.168.1.64/26 * 192.168.1.32/27 192.168.1.32/28 192.168.1.64/29

Answer 18

This host does not have a default gateway configured. There are 4 hops between this device and the device at 192.168.100.1. * There is connectivity between this device and the device at 192.168.100.1. * The connectivity between these two hosts allows for videoconferencing calls. The average transmission time between the two hosts is 2 milliseconds.

Answer 19

44. Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.) Capture traffic on the weekends when most employees are off work. Capture traffic during peak utilization times to get a good representation of the different traffic types. * Only capture traffic in the areas of the network that receive most of the traffic such as the data center. Perform the capture on different network segments. * Only capture WAN traffic because traffic to the web is responsible for the largest amount of traffic on a network.

Answer 20

45. What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command? All router interfaces will be automatically activated. The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages. * Each router interface will generate an IPv6 link-local address. It statically creates a global unicast address on this router.

Answer 21

46. Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.) application * network data link session * presentation * transport

Answer 22

nothing, because the router has a route to the destination network open the header and use it to determine whether the data is to be sent out S0/0/0 open the header and replace the destination MAC address with a new one remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0*

Answer 23

48. What will happen if the default gateway address is incorrectly configured on a host? The host cannot communicate with other hosts in the local network. The host cannot communicate with hosts in other networks. * A ping from the host to 127.0.0.1 would not be successful. The host will have to use ARP to determine the correct address of the default gateway. The switch will not forward packets initiated by the host.

Answer 24

49. What are two features of ARP? (Choose two.) When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses. An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address. * If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. * If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment. * If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply. *

Answer 25

50. A network administrator is adding a new LAN to a branch office. The new LAN must support 90 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.128 * 255.255.255.240 255.255.255.248 255.255.255.224

Answer 26

51. What are two ICMPv6 messages that are not present in ICMP for IPv4? (Choose two.) Neighbor Solicitation * Destination Unreachable Host Confirmation Time Exceeded Router Advertisement * Route Redirection

Answer 27

52. A client packet is received by a server. The packet has a destination port number of 80. What service is the client requesting? DHCP SMTP DNS HTTP *

Answer 28

53. What is an advantage for small organizations of adopting IMAP instead of POP? POP only allows the client to store messages in a centralized way, while IMAP allows distributed storage. * Messages are kept in the mail servers until they are manually deleted from the email client. * When the user connects to a POP server, copies of the messages are kept in the mail server for a short time, but IMAP keeps them for a long time. IMAP sends and retrieves email, but POP only retrieves email.

Answer 29

54. A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem? tracert ipconfig netstat nslookup *

Answer 30

55. Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) implements CSMA/CD over legacy shared half-duplex media enables IPv4 and IPv6 to utilize the same physical medium * integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper implements a process to delimit fields within an Ethernet 2 frame places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame * Other case: responsible for internal structure of Ethernet frame applies source and destination MAC addresses to Ethernet frame handles communication between upper layer networking software and Ethernet NIC hardware * adds Ethernet control information to network protocol data * implements trailer with frame check sequence for error detection Other case: integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame * implements CSMA/CD over legacy shared half-duplex media adds Ethernet control information to network protocol data * applies source and destination MAC addresses to Ethernet frame Other case: enables IPv4 and IPv6 to utilize the same physical medium * adds Ethernet control information to network protocol data * applies source and destination MAC addresses to Ethernet frame responsible for the internal structure of Ethernet frame implements trailer with frame check sequence for error detection Other case: enables IPv4 and IPv6 to utilize the same physical medium * applies source and destination MAC addresses to Ethernet frame integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper handles communication between upper layer networking software and Ethernet NIC hardware * responsible for internal structure of Ethernet frame

Answer 31

56. The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command? The switch can communicate with other hosts on the 172.16.100.0 network. The switch can be remotely managed from a host on another network. * The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1. The switch will have a management interface with the address 172.16.100.1.

Answer 32

57. What happens when the transport input ssh command is entered on the switch vty lines? The SSH client on the switch is enabled. The switch requires a username/password combination for remote access. Communication between the switch and remote users is encrypted. * The switch requires remote connections via a proprietary client software.

Answer 33

poor handling of key electrical components (electrostatic discharge), lack of critical spare parts, poor cabling, and poor labeling -> maintance threats unauthorized access resulting in loss of data temperature extremes (too hot or too cold) or humidity extremes (too wet or too dry) -> enviromental threats physical damage to servers, routers, switches, cabling plant, and workstations -> hardware threats voltage spikes, insufficient supply voltage (brownouts), unconditioned power (noise), and total power loss -> electrical threats

Answer 34

59. A disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this? DoS access reconnaissance * Trojan horse

Answer 35

60. What service is provided by HTTP? Uses encryption to secure the exchange of text, graphic images, sound, and video on the web. Allows for data transfers between a client and a file server. An application that allows real-time chatting among remote users. A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web. *

Answer 36

61. A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting? FTP DHCP * Telnet SSH

Answer 37

62. What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.) Switches become overloaded because they concentrate all the traffic from the attached subnets. The ARP request is sent as a broadcast, and will flood the entire subnet. * The network may become overloaded because ARP reply messages have a very large payload due to the 48-bit MAC address and 32-bit IP address that they contain. A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table. All ARP request messages must be processed by all nodes on the local network. *

Answer 38

63. A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.) netsh interface ipv6 show neighbor arp -a tracert ping * ipconfig * nslookup * telnet

Answer 39

64. During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry? analyze the destination IP address switch the packet to the directly connected interface * look up the next-hop address for the packet discard the traffic after consulting the route table

Answer 40

65. What characteristic describes antispyware? applications that protect end devices from becoming infected with malicious software * a network device that filters access and traffic coming into a network software on a router that filters traffic based on IP addresses or applications a tunneling protocol that provides remote users with secure access into the network of an organization

Answer 41

66. A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen? Telnet AUX SSH * Console

Answer 42

67. What are the two most effective ways to defend against malware? (Choose two.) Implement a VPN. Implement network firewalls. Implement RAID. Implement strong passwords. Update the operating system and other application software. * Install and update antivirus software. *

Answer 43

68. Which type of security threat would be responsible if a spreadsheet add-on disables the local software firewall? brute-force attack Trojan horse * DoS buffer overflow

Answer 44

69. Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss? User Datagram Protocol field transport layer error check field flow control field frame check sequence field * error correction process field

Answer 45

70. A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.248 * 255.255.255.0 255.255.255.128 255.255.255.192

Answer 46

71. What service is provided by POP3? Retrieves email from the server by downloading the email to the local mail application of the client. * An application that allows real-time chatting among remote users. Allows remote access to network devices and servers. Uses encryption to provide secure remote access to network devices and servers.

Answer 47

72. What two security solutions are most likely to be used only in a corporate environment? (Choose two.) antispyware virtual private networks * intrusion prevention systems * strong passwords antivirus software

Answer 48

73. What characteristic describes antivirus software? applications that protect end devices from becoming infected with malicious software * a network device that filters access and traffic coming into a network a tunneling protocol that provides remote users with secure access into the network of an organization software on a router that filters traffic based on IP addresses or applications

Answer 49

74. What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network? It checks the value of the TTL field and if it is 0, it discards the packet and sends a Destination Unreachable message to the source host. It checks the value of the TTL field and if it is 100, it discards the packet and sends a Destination Unreachable message to the source host. It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host. * It increments the value of the TTL field by 1 and if the result is 100, it discards the packet and sends a Parameter Problem message to the source host.

Answer 50

75. A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting? DNS DHCP SMTP TFTP *

Answer 51

76. An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.) Configure DNS on the router. Generate two-way pre-shared keys. Configure the IP domain name on the router. * Generate the SSH keys. * Enable inbound vty SSH sessions. * Enable inbound vty Telnet sessions.

Answer 52

77. Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) handles communication between upper layer networking software and Ethernet NIC hardware implements trailer with frame check sequence for error detection * places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame implements a process to delimit fields within an Ethernet 2 frame * adds Ethernet control information to network protocol data Case 2: places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame adds Ethernet control information to network protocol data responsible for internal structure of Ethernet frame * enables IPv4 and IPv6 to utilize the same physical medium implements trailer with frame check sequence for error detection * Case 3: integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper * enables IPv4 and IPv6 to utilize the same physical medium handles communication between upper layer networking software and Ethernet NIC hardware adds Ethernet control information to network protocol data implements CSMA/CD over legacy shared half-duplex media *

Answer 53

78. An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet? all IPv6 enabled devices on the local link all IPv6 DHCP servers all IPv6 enabled devices across the network all IPv6 configured routers on the local link *

Answer 54

79. What are the three parts of an IPv6 global unicast address? (Choose three.) subnet ID * subnet mask broadcast address global routing prefix * interface ID *

Answer 55

80. A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.) extensive cabling mobility options packet collision interference * security * coverage area *

Answer 56

81. A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured? Enter CTRL-Z at the privileged mode prompt. Exit global configuration mode. Power cycle the device. Reboot the device. Exit privileged EXEC mode and press Enter . *

Answer 57

82. What method is used to manage contention-based access on a wireless network? token passing CSMA/CA * priority ordering CSMA/CD

Answer 58

83. What is a function of the data link layer? provides the formatting of data provides end-to-end delivery of data between hosts provides delivery of data between two applications provides for the exchange of frames over a common local media *

Answer 59

84. What is the purpose of the TCP sliding window? to ensure that segments arrive in order at the destination to end communication when data transmission is complete to inform a source to retransmit data from a specific point forward to request that a source decrease the rate at which it transmits data *

Answer 60

85. What characteristic describes spyware? a network device that filters access and traffic coming into a network software that is installed on a user device and collects information about the user * an attack that slows or crashes a device or network service the use of stolen credentials to access private data

Answer 61

86. Which switching method drops frames that fail the FCS check? store-and-forward switching * borderless switching ingress port buffering cut-through switching

Answer 62

87. Which range of link-local addresses can be assigned to an IPv6-enabled interface? FEC0::/10 FDEE::/7 FE80::/10 * FF00::/8

Answer 63

88. What service is provided by FTP? A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web. An application that allows real-time chatting among remote users. Allows for data transfers between a client and a file server. * Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.

Answer 64

89. A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access? (Choose two.) DNS server * source port number HTTP server source MAC address default gateway *

Answer 65

90. Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.) NAT adds authentication capability to IPv4. NAT introduces problems for some applications that require end-to-end connectivity. * NAT will impact negatively on switch performance. NAT provides a solution to slow down the IPv4 address depletion. * NAT improves packet handling. NAT causes routing tables to include more information.

Answer 66

91. What would be the interface ID of an IPv6 enabled interface with a MAC address of 1C-6F-65-C2-BD-F8 when the interface ID is generated by using the EUI-64 process? 0C6F:65FF:FEC2:BDF8 1E6F:65FF:FEC2:BDF8 * C16F:65FF:FEC2:BDF8 106F:65FF:FEC2:BDF8

Answer 67

SW1 will send an ARP reply with the SW1 Fa0/1 MAC address. SW1 will send an ARP reply with the PC2 MAC address. PC2 will send an ARP reply with the PC2 MAC address. * RT1 will send an ARP reply with the RT1 Fa0/0 MAC address. RT1 will send an ARP reply with the PC2 MAC address.

Answer 68

93. What service is provided by BOOTP? Uses encryption to secure the exchange of text, graphic images, sound, and video on the web. Allows for data transfers between a client and a file server. * Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network. * A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.

Answer 69

94. What characteristic describes adware? a network device that filters access and traffic coming into a network software that is installed on a user device and collects information about the user * the use of stolen credentials to access private data an attack that slows or crashes a device or network service

Answer 70

95. When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached? cut-through store-and-forward * fast-forward fragment-free

Answer 71

Place the options in the following order:peer-to-peer network [+] no dedicated server is required [+] client and server roles are set on a per request basis peer-to-peer aplication [#] requires a specific user interface [#] a background service is required

Answer 72

97. What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.) error detection frame delimiting accessing the media * data encapsulation * logical addressing

Answer 73

Two physical interfaces have been configured. The switch can be remotely managed. * One device is attached to a physical interface. * Passwords have been configured on the switch. Two devices are attached to the switch. The default SVI has been configured. *

Answer 74

This field checks if the frame has been damaged during the transfer. -> error detection This field identifies special flow control services. This field helps to direct the frame toward its destination. -> addressing This field identifies the beginning of a frame. -> frame start This field is used by the LLC to identify the Layer 3 protocol. -> type

Answer 75

100. What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64? 2001:DA48::/64 2001:DA48:FC5::A4:/64 2001:DA48:FC5:A4::/64 * 2001::/64

Answer 76

packet filtering – prevents access based on IP or MAC address URL filtering – prevents access to websites network address translator – (none) stateful packet inspection – prevents unsolicited incoming sessions application filtering – prevents access by port number

Answer 77

102. Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior? syslog records and messages the network performance baseline * debug output and packet captures network configuration files

Answer 78

103. How does the service password-encryption command enhance password security on Cisco routers and switches? It requires encrypted passwords to be used when connecting remotely to a router or switch with Telnet. It encrypts passwords that are stored in router or switch configuration files. * It requires that a user type encrypted passwords to gain console access to a router or switch. It encrypts passwords as they are sent across the network.

Answer 79

104. Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.) The Source Address field name from IPv4 is kept in IPv6. * The Version field from IPv4 is not kept in IPv6. The Destination Address field is new in IPv6. The Header Checksum field name from IPv4 is kept in IPv6. The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6. *

Answer 80

105. A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices: IP phones – 22 addresses PCs – 20 addresses needed Printers – 2 addresses needed Scanners – 2 addresses needed The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks? 255.255.255.192 255.255.255.252 255.255.255.240 255.255.255.248 255.255.255.0 255.255.255.224 *

Answer 81

106. What characteristic describes identity theft? the use of stolen credentials to access private data * software on a router that filters traffic based on IP addresses or applications software that identifies fast-spreading threats a tunneling protocol that provides remote users with secure access into the network of an organization

Answer 82

107. A network administrator is adding a new LAN to a branch office. The new LAN must support 200 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.240 255.255.255.0 * 255.255.255.248 255.255.255.224

Answer 83

108. What are three commonly followed standards for constructing and installing cabling? (Choose three.) cost per meter (foot) cable lengths * connector color pinouts * connector types * tensile strength of plastic insulator

Answer 84

The woven copper braid should not have been removed. The wrong type of connector is being used. The untwisted length of each wire is too long. * The wires are too thick for the connector that is used.

Answer 85

IP address contained in the Layer 3 header seperated into a network portion and a unique identifier 32 or 128 bits MAC address contained in the Layer 2 header seperated into OUI and a unique identifier 48 bits

Answer 86

111. A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting? IMAP * FTP SSH Telnet

Answer 87

112. What are two characteristics shared by TCP and UDP? (Choose two.) default window size connectionless communication port numbering * 3-way handshake ability to to carry digitized voice use of checksum *

Answer 88

10.18.10.200/28 10.18.10.208/28 * 10.18.10.240/27 10.18.10.200/27 10.18.10.224/27 10.18.10.224/28 *

Answer 89

114. A client packet is received by a server. The packet has a destination port number of 21. What service is the client requesting? FTP * LDAP SLP SNMP

Answer 90

115. What attribute of a NIC would place it at the data link layer of the OSI model? attached Ethernet cable IP address MAC address * RJ-45 port TCP/IP protocol stack

Answer 91

116. A network administrator is adding a new LAN to a branch office. The new LAN must support 10 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.192 255.255.255.248 255.255.255.224 255.255.255.240 *

Answer 92

117. What technique is used with UTP cable to help protect against signal interference from crosstalk? wrapping a foil shield around the wire pairs twisting the wires together into pairs * terminating the cable with special grounded connectors encasing the cables within a flexible plastic sheath

Answer 93

IP address: 192.168.10.65 subnet mask: 255.255.255.240, default gateway: 192.168.10.76 IP address: 192.168.10.38 subnet mask: 255.255.255.240, default gateway: 192.168.10.33 IP address: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33 * IP address: 192.168.10.41 subnet mask: 255.255.255.248, default gateway: 192.168.10.46 IP address: 192.168.10.254 subnet mask: 255.255.255.0, default gateway: 192.168.10.1

Answer 94

only host D only router R1 only hosts A, B, and C only hosts A, B, C, and D only hosts B and C only hosts B, C, and router R1 *

Answer 95

Place the options in the following order:peer-to-peer network [+] no dedicated server is required [+] client and server roles are set on a per request basis peer-to-peer aplication [#] requires a specific user interface [#] a background service is required

Answer 96

88 200 * 72 224 158

Answer 97

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Answer 98

123. A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting? SSH * SMB/CIFS HTTPS SLP

Answer 99

124. What characteristic describes an IPS? a tunneling protocol that provides remote users with secure access into the network of an organization a network device that filters access and traffic coming into a network * software that identifies fast-spreading threats software on a router that filters traffic based on IP addresses or applications

Answer 100

125. What service is provided by DHCP? An application that allows real-time chatting among remote users. Allows remote access to network devices and servers. Dynamically assigns IP addresses to end and intermediary devices. * Uses encryption to provide secure remote access to network devices and servers.

Answer 101

Layer 2 802.2 header FCS (Frame Check Sequence) Destination MAC Address Layer 3 TTL Source IP Address Layer 4 Acknowledgement Number Destination Port Number

Answer 102

only host D only hosts A, B, C, and D only hosts B and C only hosts B, C, and router R1 * only hosts A, B, and C only router R1

Answer 103

128. Which wireless technology has low-power and low-data rate requirements making it popular in IoT environments? Bluetooth Zigbee * WiMAX Wi-Fi

Answer 104

129. What two ICMPv6 message types must be permitted through IPv6 access control lists to allow resolution of Layer 3 addresses to Layer 2 MAC addresses? (Choose two.) neighbor solicitations * echo requests neighbor advertisements * echo replies router solicitations router advertisements

Answer 105

130. A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address? It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server. It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address. It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use. It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network. *

Answer 106

131. Two pings were issued from a host on a local network. The first ping was issued to the IP address of the default gateway of the host and it failed. The second ping was issued to the IP address of a host outside the local network and it was successful. What is a possible cause for the failed ping? The default gateway is not operational. The default gateway device is configured with the wrong IP address. Security rules are applied to the default gateway device, preventing it from processing ping requests. * The TCP/IP stack on the default gateway is not working properly.

Answer 107

132. An organization is assigned an IPv6 address block of 2001:db8:0:ca00::/56. How many subnets can be created without using bits in the interface ID space? 256 * 512 1024 4096

Answer 108

133. What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted? 255.255.255.0 255.255.255.240 255.255.255.128 255.255.255.192 * 255.255.255.224

Answer 109

DD:DD:DD:DD:DD:DD 172.168.10.99 CC:CC:CC:CC:CC:CC 172.168.10.65 BB:BB:BB:BB:BB:BB * AA:AA:AA:AA:AA:AA

Answer 110

135. What is a benefit of using cloud computing in networking? Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more ‘smart’ or automated. Network capabilities are extended without requiring investment in new infrastructure, personnel, or software. * End users have the freedom to use personal tools to access information and communicate across a business network. Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables.

Answer 111

136. Which two statements are correct about MAC and IP addresses during data transmission if NAT is not involved? (Choose two.) Destination IP addresses in a packet header remain constant along the entire path to a target host. * Destination MAC addresses will never change in a frame that goes across seven routers. Every time a frame is encapsulated with a new destination MAC address, a new destination IP address is needed. Destination and source MAC addresses have local significance and change every time a frame goes from one LAN to another. * A packet that has crossed four routers has changed the destination IP address four times.

Answer 112

137. What is one main characteristic of the data link layer? It generates the electrical or optical signals that represent the 1 and 0 on the media. It converts a stream of data bits into a predefined code. It shields the upper layer protocol from being aware of the physical medium to be used in the communication. * It accepts Layer 3 packets and decides the path by which to forward the packet to a remote network.

Answer 113

138. What are three characteristics of the CSMA/CD process? (Choose three.) The device with the electronic token is the only one that can transmit after a collision. *A device listens and waits until the media is not busy before transmitting. * *After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired. * *All of the devices on a segment see data that passes on the network medium.* A jam signal indicates that the collision has cleared and the media is not busy. Devices can be configured with a higher transmission priority.

Answer 114

139. Which information does the show startup-config command display? the IOS image copied into RAM the bootstrap program in the ROM the contents of the current running configuration file in the RAM the contents of the saved configuration file in the NVRAM *

Answer 115

140. Which two commands can be used on a Windows host to display the routing table? (Choose two.) netstat -s route print * show ip route netstat -r * tracert

Answer 116

141. What are two functions that are provided by the network layer? (Choose two.) directing data packets to destination hosts on other networks * placing data on the network medium carrying data between processes that are running on source and destination hosts providing dedicated end-to-end connections providing end devices with a unique network identifier *

Answer 117

142. Which two statements describe features of an IPv4 routing table on a router? (Choose two.) Directly connected interfaces will have two route source codes in the routing table: C and S . If there are two or more possible routes to the same destination, the route associated with the higher metric value is included in the routing table. The netstat -r command can be used to display the routing table of a router. The routing table lists the MAC addresses of each active interface. *It stores information about routes derived from the active router interfaces.* * If a default static route is configured in the router, an entry will be included in the routing table with source code S .*

Answer 118

143. What characteristic describes a VPN? software on a router that filters traffic based on IP addresses or applications software that identifies fast-spreading threats a tunneling protocol that provides remote users with secure access into the network of an organization * a network device that filters access and traffic coming into a network

Answer 119

144. Why would a Layer 2 switch need an IP address? to enable the switch to send broadcast frames to attached PCs to enable the switch to function as a default gateway to enable the switch to be managed remotely * to enable the switch to receive frames from attached PCs

Answer 120

the process of determining when to begin sending messages on a network the process of converting information from one format into another acceptable for transmission message encoding the process of placing one message format inside another message format message encapsulation the process of unpacking one message fromat from another message format the proces of breaking up a long message into individual pieces before being sent over the network message sizing

Answer 121

146. A user sends an HTTP request to a web server on a remote network. During encapsulation for this request, what information is added to the address field of a frame to indicate the destination? the network domain of the destination host the IP address of the default gateway the MAC address of the destination host the MAC address of the default gateway *

Answer 122

147. What is an advantage to using a protocol that is defined by an open standard? A company can monopolize the market. The protocol can only be run on equipment from a specific vendor. An open standard protocol is not controlled or regulated by standards organizations. It encourages competition and promotes choices. *

Answer 123

148. Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.) * The source port field identifies the running application or service that will handle data returning to the PC. * The TCP process running on the PC randomly selects the destination port when establishing a session with the server. * UDP segments are encapsulated within IP packets for transport across the network. * * The UDP destination port number identifies the application or service on the server which will handle the data. * TCP is the preferred protocol when a function requires lower network overhead. The TCP source port number identifies the sending host on the network.

Answer 124

acknowledgment received by a sender before transmitting more segments in a session retransmission method of managing segments of data loss FCS sequence numbers used to identify missing segments of data window size number of bytes a destination can accept and process at one time

Answer 125

255.255.255.192 255.255.255.0 255.255.255.128 * 255.255.255.240 255.255.255.224

Answer 126

151. A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices: Subnetwork A: IP phones – 10 addresses Subnetwork B: PCs – 8 addresses Subnetwork C: Printers – 2 addresses What single subnet mask would be appropriate to use for the three subnetworks? 255.255.255.0 255.255.255.240 * 255.255.255.248 255.255.255.252

Answer 127

physical topology diagram (Target) location of a desktop PC in a classroom (Target) path of cables that connect rooms to wiring closets logical topology diagram (Target) IP address of a server

Answer 128

153. What two pieces of information are displayed in the output of the show ip interface brief command? (Choose two.) IP addresses * interface descriptions MAC addresses next-hop addresses Layer 1 statuses * speed and duplex settings

Answer 129

154. A user is complaining that an external web page is taking longer than normal to load.The web page does eventually load on the user machine. Which tool should the technician use with administrator privileges in order to locate where the issue is in the network? ping nslookup tracert * ipconfig /displaydns

Answer 130

155. Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet? Header Length Differentiated Services Time-to-Live * Fragment Offset

Answer 131

156. A network technician is researching the use of fiber optic cabling in a new technology center. Which two issues should be considered before implementing fiber optic media? (Choose two.) Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires. * Fiber optic cabling requires specific grounding to be immune to EMI. Fiber optic cabling is susceptible to loss of signal due to RFI. Fiber optic cable is able to withstand rough handling. Fiber optic provides higher data capacity but is more expensive than copper cabling.*

Answer 132

172.0.0.1 a loopback address 172.18.45.9 240.2.6.255 an experimental address 198.133.219.2 a public address 169.254.1.5 a link-local address

Answer 133

158. A user is executing a tracert to a remote device. At what point would a router, which is in the path to the destination device, stop forwarding the packet? when the router receives an ICMP Time Exceeded message when the RTT value reaches zero when the host responds with an ICMP Echo Reply message when the value in the TTL field reaches zero * when the values of both the Echo Request and Echo Reply messages reach zero

Answer 134

159. Users report that the network access is slow. After questioning the employees, the network administrator learned that one employee downloaded a third-party scanning program for the printer. What type of malware might be introduced that causes slow performance of the network? virus worm * phishing spam