Networking Basics - Networking MCQ Questions and answers |Technical Aptitude

11

Which protocol does DHCP use at the Transport layer?

A) IP B) TCP C) UDP D) ARP

Discuss

Answer & Solution

Answer: Option C

Solution:

User Datagram Protocol is a connection network service at the Transport layer, and DHCP uses this connectionless service.

12

Which command is used to determine if an IP access list is enabled on a particular interface?

A) show access-lists B) show interface C) show ip interface D) show interface access-lists

Discuss

Answer & Solution

Answer: Option C

Solution:

The show ip interface command will show you if any outbound or inbound interfaces have an access list set.

13

Where is a hub specified in the OSI model?

A) Session layer B) Physical layer C) Data Link layer D) Application layer

Discuss

Answer & Solution

Answer: Option B

Solution:

Hubs regenerate electrical signals, which are specified at the Physical layer.

14

What does the passive command provide to dynamic routing protocols?

A) Stops an interface from sending or receiving periodic dynamic updates. B) Stops an interface from sending periodic dynamic updates but not from receiving updates. C) Stops the router from receiving any dynamic updates. D) Stops the router from sending any dynamic updates.

Discuss

Answer & Solution

Answer: Option B

Solution:

The passive command, short for passive-interface, stops regular updates from being sent out an interface. However, the interface can still receive updates.

15

Which protocol is used to send a destination network unknown message back to originating hosts?

A) TCP B) ARP C) ICMP D) BootP

Discuss

Answer & Solution

Answer: Option C

Solution:

ICMP is the protocol at the Network layer that is used to send messages back to an originating router.

16

How often are BPDUs sent from a layer 2 device?

A) Never B) Every 2 seconds C) Every 10 minutes D) Every 30 seconds

Discuss

Answer & Solution

Answer: Option B

Solution:

Every 2 seconds, BPDUs are sent out from all active bridge ports by default.

17

How many broadcast domains are created when you segment a network with a 12-port switch?

A) 1 B) 2 C) 5 D) 12

Discuss

Answer & Solution

Answer: Option A

Solution:

By default, switches break up collision domains but are one large broadcast domain.

18

What does the command routerA (config) #line cons 0 allow you to perform next?

A) Set the Telnet password. B) Shut down the router. C) Set your console password. D) Disable console connections.

Discuss

Answer & Solution

Answer: Option C

Solution:

The command line console 0 places you at a prompt where you can then set your console user-mode password.

19

Which router command allows you to view the entire contents of all access lists?

A) show all access-lists B) show access-lists C) show ip interface D) show interface

Discuss

Answer & Solution

Answer: Option B

Solution:

To see the contents of all access lists, use the show access-lists command.

20

Which class of IP address has the most host addresses available by default?

A) A B) B C) C D) A and B

Discuss

Answer & Solution

Answer: Option A

Solution:

Class A addressing provides 24 bits for host addressing.