Final Exam Flashcards by Julian Forrester

What is the maximum TTL for this destination?

A) 11

B) 12

C) 13

D) 14

C) 13

How well did you know this?

Not at all

Perfectly

Which IPv4 address can be pinged to test the internal TCP/IP operation of a host?

A) 192.168.1.1
B) 0.0.0.0
C) 0.0.1
D) 255.255.255.255
E) 127.0.0.1

E) 127.0.0.1

How well did you know this?

Not at all

Perfectly

A host is accessing a Telnet server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)

regenerating data signals
acting as a client or a server
providing a channel over which messages travel
applying security settings to control the ftow of data
notifying other devices when errors occur
serving as the source or destination of the messages

regenerating data signals

applying security settings to control the ftow of data

notifying other devices when errors occur

How well did you know this?

Not at all

Perfectly

Which statement is true about DHCP operation?

When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.
A client must wait for lease expiration before it sends another DHCPREOUEST message.
The DHCPDISCOVER message contains the IP address and sub net masK to be assigned, the IP address of the DNS server, and the IP address of the default gateway.
If the client receives several DHCPOFFER messages from different servers, it sends a unicast DHCPREOUEST message to the server from which it chooses to obtain the IP information.

When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.

How well did you know this?

Not at all

Perfectly

Which type of wireless security is easily compromised?

WEP

How well did you know this?

Not at all

Perfectly

What types of addresses make up the majority of addresses within the /8 block 1Pv4 bit space?

multicast addresses
private addresses
public addresses
experimental addresses

public addresses

How well did you know this?

Not at all

Perfectly

Which protocol supports rapid delivery of streaming media?

Video over Internet Protocol
Real-Time Transport Protocol
Transmission Control Protocol
Secure File Transfer Protocol

Real-Time Transport Protocol

How well did you know this?

Not at all

Perfectly

A network administrator notices that the throughput on the network appears lower than expected when compared to the end-to-end network bandwidth. Which three factors can
explain this difference? (Choose three.)

the amount of traffic
the type of data encapsulation in use
the type of traffic
the number and type of network devices that the data is crossing
the bandwidth of the connection to the ISP
the reliability of the network backbone

the amount of traffic

the type of traffic

the number and type of network devices that the data is crossing

How well did you know this?

Not at all

Perfectly

Which group of IPv6 addresses cannot be allocated as a host source address?

FECO::/10
FEBF::/10
FF00::/8
FDFF::/7

FF00::/8

How well did you know this?

Not at all

Perfectly

A host PC is attempting to lease an address through DHCP. What message is sent by the server to the client know it is able to use the provided IP information?

DHCPDISCOVER
DHCPOFFER
DHCPPREQUEST
DHCPACK
DHCPNACK

DHCPOFFER

How well did you know this?

Not at all

Perfectly

The network administrator enters these commands into the R1 router:
R1# copy running-config tftp
Address or name of remote host []?
When the router prompts for an address or remote host name, what IP address should the administrator enter at the prompt?

168.9.254
168.10.1
168.10.2
168.11.254
168.11.252

192.168.11.252

How well did you know this?

Not at all

Perfectly

Which three statements characterize the transport layer protocols? (Choose three.)

TCP uses port numbers to provide reliable transportation of IP packets.

TCP and UDP port numbers are used by application layer protocols.

TCP uses windowing and sequencing to provide reliable transfer of data.

TCP is a connection-oriented protocol. UDP is a connectionless protocol.

UDP uses windowing and acknowledgments for reliable transfer of data.

TCP and UDP port numbers are used by application layer protocols.

TCP uses windowing and sequencing to provide reliable transfer of data.

TCP is a connection-oriented protocol. UDP is a connectionless protocol.

How well did you know this?

Not at all

Perfectly

What is the purpose of ICMP messages?

to inform routers about network topology changes

to ensure the delivery of an IP packet

to monitor the process of a domain name to IP address resolution

to provide feedback of IP packet transmissions

How well did you know this?

Not at all

Perfectly

A technician uses the ping 127.0.0.1 command. What is the technician testing?

connectivity between a PC and the default gateway

connectivity between two adjacent Cisco devices

physical connectivity of a particular PC and the network

the TCP/IP stack on a network host

connectivity between two PCs on the same network

the TCP/IP stack on a network host

How well did you know this?

Not at all

Perfectly

What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table?

It notifies the sending host that the frame cannot be delivered.

It initiates an ARP request.

It forwards the frame out of all ports except for the port at which the frame was received.

It broadcasts the frame out of all ports on the switch.

It forwards the frame out of all ports except for the port at which the frame was received.

How well did you know this?

Not at all

Perfectly

What is a characteristic of the LLC sublayer?

It places information in the frame that allows multiple Layer 3 protocols to use the same network interface and media.

It provides delimitation of data according to the physical signaling requirements of the medium.

It defines software processes that provide services to the physical layer.

It provides the logical addressing required that identifies the device.

It places information in the frame that allows multiple Layer 3 protocols to use the same network interface and media.

How well did you know this?

Not at all

Perfectly

On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?

VLAN 1

console 0

vty 0

FastEthernet0/1

VLAN 1

How well did you know this?

Not at all

Perfectly

A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)

the reliability of the gigabit Ethernet infrastructure of the backbone

the amount of traffic that is currently crossing the network

the type of traffic that is crossing the network

the sophistication of the encapsulation method applied to the data

the bandwidth of the WAN connection to the Internet

the latency that is created by the number of network devices that the data is crossing

the amount of traffic that is currently crossing the network

the type of traffic that is crossing the network

the latency that is created by the number of network devices that the data is crossing

How well did you know this?

Not at all

Perfectly

When applied to a router, which command would help mitigate brute-force password attacks against the router?

service password-encryption

banner motd $Max failed logins = 5$

exec-timeout 30

How well did you know this?

Not at all

Perfectly

Which two statements correctly describe a router memory type and its contents? (Choose two.)

ROM is nonvolatile and contains basic diagnostic software.

FLASH is nonvolatile and contains a limited portion of the IOS.

ROM is nonvolatile and stores the running IOS.

RAM is volatile and stores the IP routing table.

NVRAM is nonvolatile and stores other system files.

ROM is nonvolatile and contains basic diagnostic software.

RAM is volatile and stores the IP routing table.

How well did you know this?

Not at all

Perfectly

Which two components are necessary for a wireless client to be installed on a WLAN? (Choose two.)

custom adapter

wireless bridge

media

wireless NIC

crossover cable

wireless client software

wireless NIC

wireless client software

How well did you know this?

Not at all

Perfectly

A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)

applying security settings to control the flow of data

notifying other devices when errors occur

regenerating data signals

acting as a client or a server

serving as the source or destination of the messages

providing a channel over which messages travel

applying security settings to control the flow of data

notifying other devices when errors occur

regenerating data signals

How well did you know this?

Not at all

Perfectly

Match the things to the things

How well did you know this?

Not at all

Perfectly

Which is the correct order for PDU Encapsulation?

Frame Header > Network Header > Transport Header > Data > Frame Trailer

How well did you know this?

Not at all

Perfectly

Which address on a PC does not change, even if the PC is moved to a different network? IP address logical address MAC address default gateway address

MAC address

What will happen if the default gateway address is incorrectly configured on a host? 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 host cannot communicate with other hosts in the local network. The host cannot communicate with hosts in other networks. The switch will not forward packets initiated by the host

The host cannot communicate with hosts in other networks.

A host PC has just booted and is attempting to lease an address through DHCP. Which two messages will the client typically broadcast on the network? (Choose two.) DHCPREQUEST DHCPOFFER DHCPDISCOVER DHCPNACK DHCPACK

DHCPDISCOVER DHCPREQUEST

Refer to the exhibit. An administrator wants to change the name of a brand new switch, using the hostname command as shown. What prompt will display after the command is issued? Switch# My(config)# My Switch(config)# Switch(config)# MySwitch(config)#

Switch(config)# (The hostname was invalid so the old one is kept)

After making configuration changes, a network administrator issues a copy running-config startup-config command in a Cisco switch. What is the result of issuing this command? The configuration changes will be removed and the original configuration will be restored. The new configuration will be stored in flash memory. The current IOS file will be replaced with the newly configured file. The new configuration will be loaded if the switch is restarted.

The new configuration will be loaded if the switch is restarted.

Refer to the exhibit.A TCP segment from a server has been captured by Wireshark, which is running on a host. What acknowledgement number will the host return for the TCP segment that has been received? 2921 250 2 306 21

306

Which technology provides a solution to IPv4 address depletion by allowing multiple devices to share one public IP address? ARP DNS SMB DHCP HTTP NAT

NAT

What is the purpose of the routing process? to encapsulate data that is used to communicate across a network to select the paths that are used to direct traffic to destination networks to convert a URL name into an IP address to provide secure Internet file transfer to forward traffic on the basis of MAC addresses

to select the paths that are used to direct traffic to destination networks

Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types? audio conference, financial transactions, web page financial transactions, audio conference, web page audio conference, web page, financial transactions financial transactions, web page, audio conference

audio conference, financial transactions, web page

A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used? cell modem dial-up cable modem satellite DSL

DSL

Which connection provides a secure CLI session with encryption to a Cisco switch? a Telnet connection an SSH connection a console connection an AUX connection

an SSH connection

What is the purpose of the network security accounting function? to provide challenge and response questions to require users to prove who they are to determine which resources a user can access to keep track of the actions of a user

to keep track of the actions of a user

Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses Telnet to connect to the switch, which password is needed to access user EXEC mode? lineconin linevtyin letmein secretin

linevtyin

Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details? IEEE standards Request for Comments IRTF research papers protocol models

Request for Comments

A PC is configured to obtain an IP address automatically from network 192.168.1.0/24. The network administrator issues the arp –a command and notices an entry of 192.168.1.255 ff-ff-ff-ff-ff-ff. Which statement describes this entry? This entry refers to the PC itself. This entry maps to the default gateway. This is a static map entry. This is a dynamic map entry.

This is a static map entry.

Which subnet would include the address 192.168.1.96 as a usable host address? 192. 168.1.64/26 192. 168.1.32/28 192. 168.1.32/27 192. 168.1.64/29

192.168.1.64/26

A particular website does not appear to be responding on a Windows 7 computer. What command could the technician use to show any cached DNS entries for this web page? ipconfig /all ipconfig /displaydns arp -a nslookup

ipconfig /displaydns

Which type of wireless security generates dynamic encryption keys each time a client associates with an AP? WPA PSK WEP EAP

WPA

A frame is transmitted from one networking device to another. Why does the receiving device check the FCS field in the frame? to compare the interface media type between the sending and receiving ends to determine the physical address of the sending device to verify that the frame destination matches the MAC address of the receiving device to check the frame for possible transmission errors to verify the network layer protocol information

to check the frame for possible transmission errors

Refer to the exhibit. Which IP addressing scheme should be changed? Site 1 Site 3 Site 4 Site 2

Site 2

What is the effect of configuring the ipv6 unicast-routing command on a router? to assign the router to the all-nodes multicast group to permit only unicast packets on the router to enable the router as an IPv6 router to prevent the router from joining the all-routers multicast group

to enable the router as an IPv6 router

Which three IP addresses are private ? (Choose three.) 10. 1.1.1 172. 16.4.4 224. 6.6.6 192. 168.5.5 172. 32.5.2 192. 167.10.10

10. 1.1.1 192. 168.5.5 172. 16.4.4

Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address? It is the IP address of the Router1 interface that connects the company to the Internet. It is the IP address of the ISP network device located in the cloud. It is the IP address of Switch1 that connects PC1 to other devices on the same LAN. It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.

It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.

During normal operation, from which location do most Cisco switches and routers run the IOS? flash RAM NVRAM disk drive

RAM

What is an important function of the physical layer of the OSI model? It encodes frames into electrical, optical, or radio wave signals. It accepts frames from the physical media. It encapsulates upper layer data into frames. It defines the media access method performed by the hardware interface.

It encodes frames into electrical, optical, or radio wave signals.

Which procedure is used to reduce the effect of crosstalk in copper cables? wrapping the bundle of wires with metallic shielding avoiding sharp bends during installation requiring proper grounding connections designing a cable infrastructure to avoid crosstalk interference twisting opposing circuit wire pairs together

twisting opposing circuit wire pairs together

What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.) placement and removal of frames from the media detection of errors through CRC calculations conversion of bits into data signals delimiting groups of bits into frames data link layer addressing error correction through a collision detection method session control using port numbers

delimiting groups of bits into frames data link layer addressing detection of errors through CRC calculations

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

CSMA/CA

What happens when part of an Internet radio transmission is not delivered to the destination? A delivery failure message is sent to the source host. The part of the radio transmission that was lost is re-sent. The transmission continues without the missing portion. The entire transmission is re-sent.

The transmission continues without the missing portion.

What is the auto-MDIX feature on a switch? the automatic configuration of full-duplex operation over a single Ethernet copper or optical cable the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection the ability to turn a switch interface on or off accordingly if an active connection is detected the automatic configuration of an interface for 10/100/1000 Mb/s operation

the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection

Which function is provided by TCP? detection of missing packets communication session control path determination for data packets data encapsulation

detection of missing packets

How does a Layer 3 switch differ from a Layer 2 switch? A Layer 3 switch learns the MAC addresses that are associated with each of its ports. However, a Layer 2 switch does not. A Layer 3 switch maintains an IP address table instead of a MAC address table. A Layer 3 switch supports VLANs, but a Layer 2 switch does not. An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.

An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.

Which two notations are useable nibble boundaries when subnetting in IPv6? (Choose two.) /68 /62 /66 /64 /70

/64 /68

What is the purpose of having a converged network? to reduce the cost of deploying and maintaining the communication infrastructure to provide high speed connectivity to all end devices to make sure that all types of data packets will be treated equally to achieve fault tolerance and high availability of data network infrastructure devices

to reduce the cost of deploying and maintaining the communication infrastructure

Refer to the exhibit. A ping to PC3 is issued from PC0, PC1, and PC2 in this exact order. Which MAC addresses will be contained in the S1 MAC address table that is associated with the Fa0/1 port? just the PC0 MAC address PC0, PC1, and PC2 MAC addresses just the PC2 MAC address just PC0 and PC1 MAC addresses just the PC1 MAC address

just PC0 and PC1 MAC addresses

Which field in an IPv4 packet header will typically stay the same during its transmission? Packet Length Destination Address Flag Time-to-Live

Destination Address

What two preconfigured settings that affect security are found on most new wireless routers? (Choose two.) MAC filtering enabled default administrator password WEP encryption enabled PSK authentication required broadcast SSID

broadcast SSID default administrator password

Which parameter does the router use to choose the path to the destination when there are multiple routes available? the higher metric value that is associated with the destination network the lower metric value that is associated with the destination network the higher gateway IP address to get to the destination network the lower gateway IP address to get to the destination network

the lower metric value that is associated with the destination network

Refer to the exhibit. What is the significance of the asterisk (\*) in the exhibited output? An asterisk designates that the file system has at least one file that uses that file system. The asterisk designates which file system is the default file system. An asterisk indicates that the file system is bootable. The asterisk shows which file system was used to boot the system.

The asterisk designates which file system is the default file system.

# Fill in the blank. During data communications, a host may need to send a single message to a specific group of destination hosts simultaneously. This message is in the form of a ”\_\_\_\_\_” message.

multicast

An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes? to interrupt the ping process to restart the ping process to allow the user to complete the command to exit to a different configuration mode

to interrupt the ping process

Refer to the exhibit. Which area would most likely be an extranet for the company network that is shown? area A area D area C area B

area C

In which default order will a router search for startup configuration information? setup mode, NVRAM, TFTP NVRAM, TFTP, setup mode NVRAM, RAM, TFTP TFTP, ROM, NVRAM flash, ROM, setup mode

NVRAM, TFTP, setup mode

Which IPv6 address is assigned to the Serial0/0/0 interface on RT2? 2001: db8:abc:1::1 2001: db8:abc:5::1 2001: db8:abc:5::2 2001: db8:abc:10::15

2001:db8:abc:5::1

What is contained in the trailer of a data-link frame? physical address data error detection logical address

error detection

match

What is the protocol that is used to discover a physical address from a known logical address and what message type does it use?

-ARP, broadcast\*

A _________ topology influences the type of network framing and media access control that will be used Physical Logical Data Presentation

Logical

Which two statements describe the characteristics of fiber-optic cabling? (Choose two.) Fiber-optic cabling uses LEDs for single-mode cables and laser technology for multimode cables. Fiber-optic cabling does not conduct electricity. Fiber-optic cabling has high signal loss. Fiber-optic cabling is primarily used as backbone cabling. Multimode fiber-optic cabling carries signals from multiple sending devices.

Fiber-optic cabling does not conduct electricity.\* Fiber-optic cabling is primarily used as backbone cabling.\*

Which two protocols function at the internet layer? (Choose two.) ARP ICMP BOOTP PPP IP

IP\* ICMP\*

Which firewall technique blocks incoming packets unless they are responses to internal requests? URL filtering port filtering application filtering stateful packet inspection

stateful packet inspection\*

Consider the following range of addresses: 2001:0DB8:BC15:00A0:0000:: 2001:0DB8:BC15:00A1:0000:: 2001:0DB8:BC15:00A2:0000:: … 2001:0DB8:BC15:00AF:0000:: The prefix-length for the range of addresses is \_\_\_.

/60

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.) FTP ARP NAT DHCP PPP DNS

DNS\* DHCP\* FTP\*

Which communication tool allows real-time collaboration? weblog wiki e-mail instant messaging

instant messaging\*

Which of the following are primary functions of a router? (Choose two.) packet switching microsegmentation flow control path selection domain name resolution

path selection\* packet switching\*

\_\_\_\_\_\_\_\_\_\_ is a best-effort, connectionless application layer protocol that is used to transfer files.

TFTP

Can't connect to internet. Why? DNS Misconfigured Wrong Default Gateway

It will give 4 options about ping,

the correct one is: The PC2 will be able to ping 192.168.1.1\*

From where is the system image being loaded. TFTP Flash USB CD

Flash

Why does the command not work? The user has to be in privileged EXEC mode to use that command. The user is in privileged EXEC mode. The user is connected via SSH.

The user has to be in privileged EXEC mode to use that command.

What are three characteristics of multicast transmission? (Choose three.) A single packet can be sent to a group of hosts. Multicast messages map lower layer addresses to upper layer addresses. Multicast transmission can be used by routers to exchange routing information. Computers use multicast transmission to request IPv4 addresses. The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255.

A single packet can be sent to a group of hosts.\* Multicast messages map lower layer addresses to upper layer addresses.\* Multicast transmission can be used by routers to exchange routing information.\*

At a minimum, which address is required on IPv6-enabled interfaces? global unicast link-local site local unique local

link-local\*

Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame? fragment-free switching fast-forward switching store-and-forward switching cut-through switching

store-and-forward switching

Final Exam Flashcards

(91 cards)