Tenta 2021-3-26 Flashcards by Magnus Viktorsson

“In the TCP/IP model, which layer defines the interface between software running on the computer and the network itself?

O Data link
O Application
O Internet
O Transport”

Application

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“Which layer of the TCP/IP model defines the rules for data packet recovery?
0 Transport
0 Application”
0 Internet
0 Data Link

Transport

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“What are the two main services provided by the network layer of the TCP/IP model?

O Encryption
O Compression
O Reliability
O Addressing
O Routing”

Addressing, Routing

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“The process of forwarding an IP packet from host to host is known as

O Delivery
O Switching
O Routing
O Sending”

Routing

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“What name is given to the process of enclosing data with headers and trailers as the data is moved down the TCP/IP model?

O lnclosing
O Encryption
O Encapsulation
O Condensing”

Encapsulation

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“Which of the following algorithms is used to control network access and handle collisions on the shared Ethernet network?

Q CLNP
0 CSMA/CD
0 CSMA/CA
Q DCAP”

CSMA/CD

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“When a collision occurs on a shared Ethernet network, what is the first step in recovery for the two computers in question?

O Resend the last frame right away.
O Do nothing until the line clears.
O Send a jamming signal.”
“O Wait for the other computer to finish.”

Send a jamming signal.

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“What is the mast common network cable connector used in Ethernet?

0 RJ-10
0 RJ-45
0 RJ-11
0 RJ-48”

RJ-45

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What is the name of the most common LAN device that provides many physical ports into which Ethernet cables can be connected?

O Ethernet repeater
O Ethernet concentrator
O Ethernet bridge
O Ethernet router
O Ethernet switch

Ethernet switch

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Which IEEE standard defines the use of radio waves to communicate between wireless LAN nodes?

0 IEEE 802.3
0 IEEE 802.2
0 IEEE 802.5
0 IEEE802.16
0 IEEE802.11

IEEE802.11

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“Which of the following two protocols are used to establish a point-to-point serial link?

0 H.323
O PPP
0 PPTP
0 HDLC
0 UDP
0 IP
0 TCP”

PPP, HDLC

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“Which command sends a packet that states ““if you receive this packet, and it’s addressed to you, please reply back””?

O Ping
O Nmap
O Telnet
O Tracert

Ping

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“What is the difference between the ISO version of HDLC and the Cisco version of HDLC that is used, by default, on all serial interfaces?

O Encryption support
O Authentication support
O Optimized header
O Type field
O Protocol field”

Type Field

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“Which technology is commonly irnplernented inside a service provider’s (SP) network and provides an Ethernet point-to-point connection between custorner devices?

0 EoMPLS
0 Frame relay
0 ATM

EoMPLS

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“What protocol standard is used when utilizing an Ethemet emulation point-to-point link?
0 ISO 4507
0 IEEE802.11
0 IEEE 802.5
0 IEEE 802.3
0 ISO 1431”

IEEE 802.3

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“The Internet is essentially one big network

O Ethernet
0 0S1
0 iBGP
0 EGP
0 TCP/IP”

TCP/IP

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“Which protocol does the ping command use to test connectivity?

0 UDP
0 ICMP
0 TCP/IP
0 1Pv6”

ICMP

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“Review the following output of the ping command. What does this output tell us about 192.168.100.4?
Pinging 192.168.100.4 with 32 bytes of data:
Request timed out. Request timed out. Request timed out.
Reply from 192.168.13.36: Destination host unreachable. Ping statistics for 192.168.100.4:
Packets: Sent= 4, Received = 1, Lost = 3 (75% loss).

O The host is not reachable from this device.
O The host is online, but not accessible from this device.
O Some packets were able to reach the host, while others were dropped.
O All packets successfully reached the host.”

The host is not reachable from this device.

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“You just unpacked a brand new Cisco 2960 switch. Which ports/interfaces are ready to connect to and be used to set up the switch?

0 VTY
O Console
O fa0/1
0 AUX”

Console

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“You are trying to connect to your switch via the console port and are having trouble connecting to the switch. You check the setting for your terminal emulation program and find the following:

Port COM1 Baud Rate 300
Data 8
Parity None
Stop 1
Flow Control None”

“Which setting is incorrect, and what should it be set to?
0 Port: com2
O Flow Control: Xon/Xoff
O Parity: 1
O Baud Rate: 9600”

Baud Rate 9600

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“Which oft he following commands would you issue to move from the User EXEC mode to the Privileged EXEC mode?

0 open
O enable
O enter
O activate”

enable

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“You are having trouble remembering part of the correct format of a command. Which of the commands would give you help on the correct format of the parameters?

O command ?
Q help
0 command?”
0 command *

command ?

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“A Cisco switch has four memory areas that store various files as well as the IOS. In which memory area is the bootstrap program stored?

0 NVRAM
0 ROM
0 FLASH
0 RAM”

ROM

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“The process of sending frames out all other interfaces, except the interface on which the frame arrived, is called

O Forwarding
O Flooding
O Replication
O Copying”

Flooding

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"The IEEE defines three general categories of Ethernet MAC addresses. What are these three types? O Unicast D Singlecast O Multicast D Broadcast D Loopback O Anycast"

Unicast, Multicast, Broadcast

"When connecting multiple switches with redundant links, which of the following protocols helps to ensure that you will have a loop-free Ethemet network? 0 TCP 0 STP 0 ARP 0 HTTP"

STP

"When STP has placed a port in the blocked state, this port O Cannot receive or forward data frames O Will receive data frames but cannot forward them O Will receive and forward data frames only O Will forward data frames but cannot receive them"

Cannot receive or forward data frames

"Which of the following is the goal of establishing a loop-free environment? O This allows a switch to forward only one copy of the message to the destination. O This allows a switch to learn MAC addresses. O This allows the switch to examine the source MAC address of each frame. O This allows the switch to decide whether or not to forward a frame."

This allows a switch to forward only one copy of the message to the destination.

"Which command can be used to alter the default display behavior of syslog messages on a device so that they will not interrupt the output of a show command? O logging timed O synchronize messages O logging synchronous O logging systematic"

logging synchronous

What is the name used to identify a virtual NIC type of device that exists on Cisco switches to assign IP information to specific VLANs 0 PVC 0 SVI 0 VRF O SVC

SVI

"An engineer has initiated the ping command from Cisco 10S. The command showed an output of five exclamation points (!!!!!). What does this tell the engineer? O None of the messages received a reply. O All five echo messages received a reply. O Same of the messages received a reply, but others timed out. O The syntax of the command was entered incorrectly."

All five echo messages received a reply.

"Which Cisco IOS command is used to display local interface (not server) DHCP iPv4 assignment information? O show ip dhcp binding O show ip dhcp lease" "O show dhcp ip binding O show dhcp lease"

show dhcp lease

"Which of the following commands is used to enable console password security using a simple password? O login O line eon 0 O line vty O 15 O password password-value"

"Which of the following commands is used to initiate the configuration mode to set a password for Telnet? O line vty O 15 O login O password password-value O line eon 0"

line vty O 15

"Which of the following commands are shared between the console and Telnet for the setup of simple passwords? O login D line vty O 15 O password password-value D line eon 0"

"An engineer initiated a Cisco IOS ping and received an output of two exclamation points, one period, followed by another two exclamation points (!!.!!). What does this output tel1 the engineer? O All five of the echo messages received a reply. O None of the echo messages received a reply. O The third echo message is the only one to receive a reply. O The third echo message timed out, but all the others received a reply."

The third echo message timed out, but all the others received a reply.

"Fa0/1" "connected" 1 "half" "a-100" "10/100BaseTX" "Fa0/2" "notconnect" 1 "auto" "auto" "10/100BaseTX" "Fa0/3" "notconnect" 1 "auto" "auto" "10/100BaseTX" "Fa04" "notconnect" 1 "auto" "auto" "10/100BaseTX" "Fa05" "notconnect" 1 "auto" "auto" "10/100BaseTX" "Refer to the above. From the output shown from the show interface status command, what can be determined about how speed and duplex were assigned to interface F0/1? Choose two options. O Duplex was not autonegotiated. D Duplex was autonegotiated. D Speed was not autonegotiated. D Speed was autonegotiated."

Duplex was not autonegotiated. Speed was autonegotiated."

"When using the no speed cornmand on an interface, what is the resulting change made? O The speed setting defaults to its automatic configuration. O The speed setting is no longer recorded for the interface. O The speed for the interface is set to 0, disabling it. O The speed defaults to the lowest possible value."

The speed setting defaults to its automatic configuration.

"What does it mean when an interface does NOT display configuration settings when using the show running-config and show startup-config commands? O It means the interface is not active. O It means the interface is configured the same as the following entry. O It means the configuration is running with default settings." "O It means the interface is configured the same as the previous entry."

It means the configuration is running with default settings.

"Which of the following is the most essential fäet that allows the IEEE auto-negotiation protocol to function? O Cisco switch logic can determine speed and duplex fora connection. O Wiring pinouts are common for 10BASE-T, 100BASE-T, and 1000BASE-T. O Any Ethernet device can sense the speed of a connection. O Cisco meets the IEEE standard for the protocol."

Wiring pinouts are common for 10BASE-T, 100BASE-T, and 1000BASE-T.

"Which command disallows the use of trunking mode on a port? O switchport mode trunk disable O switchport mode dynamic desirable O switchport mode dynamic auto O switchport mode access O switchport mode dynamic disable"

switchport mode access

"What is the name of the process that is defined by IEEE 802.1Q to relay traffic from multiple VLANs? 0 VLAN staging 0 VLAN tagging O Broadcast forwarding O Switchport mode access"

VLAN tagging

"What is the name/standard of the two VLAN trunking protocols that have been traditionally supported on Cisco switches? 0 IEEE802.1Q 0 IEEE 8021x 0 ASL 0 ISL"

IEEE802.1Q,ASL

"The IEEE 802.1Q standard adds a ___ -byte tag to the original frame to identify the VLAN." 2 1 4 8

How many bits within the IEEE 802.1Q tags are used to identify the VLAN frame? 16 12 48 8

"What is one way in which STP protects a redundant Ethernet network? O Acts as a type of firewall O ldentifies and deletes invalid MAC to IP address mapping O Protects against frames looping the Layer 2 domains O Reduces collision domain size"

Protects against frames looping the Layer 2 domains

"How is a root bridge/switch determined?" "O All the switches send out hello BPDUs, and the switch with the highest bridge ID becomes the roat. O All the switches in the internetwork send out hello BPDUs, and the switch that has the aggregate least number of hops to all the other switches becomes the roat. O The switches send out hello BPDUs, and the switch with the mast direct connected switches becomes the roat. O The core network switch becomes the roat. O All the switches send out hello BPDUs, and the switch with the lowest bridge ID becomes the roat."

All the switches send out hello BPDUs, and the switch with the lowest bridge ID becomes the roat."

"Which is a true statement about STP PortFast mode? O The port bypasses the normal STP startup process and enters forwarding mode immediately. O It should be used on all switch uplink ports to speed convergence in case of a network failure. O Special BPDUs are generated to notify the other switches that the port is an access port and any switches connected to it should cause the port to be disabled. O It starts the generation of STP TCN BPDU generation in port up/down conditions."

The port bypasses the normal STP startup process and enters forwarding mode immediately.

"In what STP stable state does a port drop all received user traffic and not transrnit user traffic but still listen for updated BPDUs? O Dropping" "O Listening O Blocking O Learning"

Blocking

"Switch forwarding logic dictates that a switch flood broadcasts out all switchports that are in the same ___ except the switchport in which the frame arrived. O Area O Management domain 0 VLAN 0 Process"

VLAN

"What is the difference between EtherChannel auto and desirable modes? O Auto mode will not function and put the port inta errdisable mode unless both sides of the link are in auto. O Auto will always try to negotiate to an access port first before trying other modes. O Auto will always initiate autonegotiation, whereas desirable will not. O Desirable will always initiate autonegotiation, whereas auto will not. O Desirable mode will not function and put the port inta errdisable mode unless both sides of the link are in desirable."

Desirable will always initiate autonegotiation, whereas auto will not.

"Which Cisco STP mode extends on the IEEE 802.1w standard by providing an STP instance per VLAN? 0 PVST+ 0 RPVST+ 0 MST 0 CST"

RPVST+

"Which STP mode is the default on mast modern Cisco Catalyst switches? 0 RPVST+ 0 PVST+ 0 CST 0 MST"

PVST+

"What is the only way an engineer can alter the value of the bridge ID? O Configure the bridge ID under STP configuration mode O Modify the main switch MAG address" "O Swap out the main switch network interface card O Configure the STP priority"

Configure the STP priority

"When configuring a switch with system ID extension enabled, what STP priority multiple must be used?" 0 1024 0 9216 0 4096 0 2048

4096

"Your boss has asked you to tel1 him how many usable subnets and hosts a Class C network with the IP address and mask of 192.168.10.0/28 can have. How should you respond? O 16 subnets and 14 hasts O 62 subnets and 2 hasts O 16 subnets and 16 hasts O 30 subnets and 6 hasts"

16 subnets and 14 hosts

"What valid host range is the IP address 172.16.10.22 255.255.255.240 apart of? O 172.16.10.16 through 172.16.10.23 O 172.16.10.1 through 172.16.10.255 O 172.16.10.17 through 172.16.10.31 O 172.16.10.17 through 172.16.10.30 O 172.16.10.20 through 172.16.10.22"

172.16.10.17 through 172.16.10.30

"lf you wanted to have 12 subnets starting with a Class C network ID, which subnet mask would you use?" 0 "255.255.255.252" 0 "255.255.255.254" 0 "255.255.255.240" 0 "255.255.255.248"

255.255.255.240

"lf you are using a Glass C network ID with 2 subnets and need 31 hasts per network, which of the following masks should you use?" 0 "255.255.255.0" 0 "255.255.255.192" 0 "255.255.255.224" 0 "255.255.255.248"

255.255.255.192

"How rnany subnets and hosts are provided by the network 192.168.254.0/26? O 4 networks with 64 hosts O 2 network with 62 hosts O 4 networks with 62 hosts O 254 networks with 62 hosts"

4 networks with 62 hosts

"Given the IP address 200.1.1.130 and the mask 255.255.255.224, what is the subnet number?" 0 "200.1.1.64" 0 "200.1.1.96" 0 "200.1.1.128" 0 "200.1.1.32"

200.1.1.128

"What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?" 0 30 0 16 0 31 0 14 0 15

"What is the broadcast address of 192.168.192.10/29? 0 192.168.192.255" 0 "192.168.192.7" 0 "192.168.192.15" 0 "192.168.192.31"

192.168.192.15

"What is the subnet number of a host with an IP address of 172.16.66.0/21? 0 172.16.64.0" 0 "172.16.48.0" 0 "172.16.36.0" 0 "172.16.0.0"

172.16.64.0

"Which of the following lists the prefix (CIDR) format equivalent of 255.255.224.0?" 0 "/21" 0 "/22" 0 "/19" 0 "/20"

/19

"Which of the following lists the prefix (CIDR) format equivalent of 255.254.0.0?" /15 /13 /14 /12

/15

"Which of the following lists the prefix (CIDR) format equivalent of 255.255.240.0?" 0 "/20" 0 "/19" 0 "/21" 0 "/18"

/20

"Which of the following is the dotted-decimal notation (DDN) equivalent of /11?" 0 "255.224.0.0" 0 "255.240.0.0" 0 "255.192.0.0" 0 "255.128.0.0"

225.224.0.0

"Which ofthe following is the dotted-decimal notation (DDN) equivalent of /18? 0 255.255.128.0" 0 "255.255.192.0" 0 "255.255.240.0" 0 "255.255.224.0"

255.255.192.0

"As the network engineer, you are given the following IP address information: 172.16.8.159 / 255.255.255.192. Identify the broadcast address. 0 172.16.8.191" 0 "172.16.255.255" 0 "172.16.8.127" 0 "172.16.8.255"

172.16.8.191

"As the network engineer, you're shown the following IP address information: 192.168.10.33 / 255.255.255.248. ldentify the broadcast address. 0 192.168.10.255" 0 192.168.10.39 0 192.168.255.255 0 192.168.10.40"

192.168.10.39

"Which of the following is the resident subnet for the IP address 192.168.10.33/29?" 0 "192.168.10.24" 0 "192.168.10.32" 0 "192.168.10.40" 0 "192.168.10.48"

192.168.10.32

"Which ofthe following is the resident subnet for the IP address 187.225.25.48/20 0 "187.225.16.0" 0 "187.225.32.0" 0 "187.225.48.0" 0 "187.225.0.0"

187.225.16.0

"Which of the following is the broadcast address for the subnet in which IP address 200.10.5.68/28 resides? 0 200.10.5.95" 0 "200.10.5.31" 0 "200.10.5.47" 0 "200.10.5.79"

200.10.5.79

"What name is used to refer to the piece of equipment that connects a router (serial interface) to a leased line provider? O Frame Relay switch O Ethernet switch 0 CSU/DSU 0 RTS/CTS"

CSU/DSU

"A failed ping can point to which of the following potential roat causes? O IP addressing problems 0 DHCP problems O None of the above 0 Aand B"

A and B

"The CSU/DSU converts the Layer interface." "standards between the telco and the serial" "02 01 03 04"

"Which router interface type can be configured with an encapsulation ofHDLC or PPP? Q WAN O Ethernet O Serial O Parallel"

Serial

"Which Cisco IOS command can be used to display a list of basic IP information with a single line per interface, including IP address and interface status?" O show interfaces O show ip interface brief O show interfaces brief O show ip interface

show ip interface brief

"As the network engineer, you are configuring the Fast Ethemet interface. You have issued the following command to the fa0/0 interface: ip address 200.16.24.1 255.255.255.0. Which of the following must be TRUE before the router can add this information to its routing table? Choose 2 answers. O The interface status codes for the interface must be in the Up and Up condition. O The router must be able to communicate with its neighbor first. O The interface must have the no shutdown command issued. O The interface must be administratively turned off."

The interface status codes for the interface must be in the Up and Up condition The interface must have the no shutdown command issued

"You need to configure a default route. Which of the following commands is the correct way to set the default route out of your network? O ip route 0.0.0.0 172.20.3.2 O ip route 0.0.0.0.0.0.0.0 172.20.3.2 O ip route 0.0.0.0 0.0.0.0 172.20.3.2 O ip route any 172.20.3.2"

Ip route 0.0.0.0 0.0.0.0 172.20.3.2

"Which conditions must be met for a router to process a frame? O The frame source address is the same as the local address (Layer 2). O The frame isn't marked Discard Eligible. O The frame has no errors. O The frame destination address is the same as the local address (Layer 2)."

The frame source address is the same as the local address (Layer 2). The frame has no errors.

"What is the process of removing the Layer 2 header and trailer information to reveal the Layer 3 packet? O De-encapsulation O Decryption O Encryption O Encapsulation"

De-encapsulation

"What type of route adds the subnet to the routing table of a Cisco device when the ip address command is issued on an interface with a state of up/up?" "O Interface route O Connected route O Local route O Static route"

Local route

Tenta 2021-3-26 Flashcards

(85 cards)