Networking Basics

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

Correct Answer: B. Every 2 seconds

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

Correct Answer: A. 1

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.

Correct Answer: C. Set your console 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

Correct Answer: B. show access-lists

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

A. A
B. B
C. C
D. A and B

Correct Answer: A. A

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