CCNA Certification Practice Exam :
Switching Question Set #1
To help you prepare for success on your CCENT and CCNA certification exams, here's a new practice exam on LAN switching!
You'll find the answers at the bottom of the page. Enjoy!
Chris Bryant
CCIE #12999
"The Computer Certification Bulldog"
chris@thebryantadvantage.com
Question 1:
Short answer: When a frame enters a Cisco switch port, what's the first value the switch looks at?
Question 2:
A switch receives a frame with a unicast destination MAC address, but there's no entry in the MAC address table for that address. What's the default action of the switch?
A. Flood the frame
B. Drop it
C. Send ARP Request
D. Forward the frame
E. Filter it
Question 3:
Which of the following terms best describes the action taken by a Cisco switch with an incoming frame whose destination MAC address is known?
A. flooded
B. multicast
C. broadcast
D. forwarded
E. filtered
Question 4:
Short answer: What's the MAC destination address of a broadcast frame?
Question 5:
What value does port security use to allow or deny access to the network?
A. enable password
B. enable secret
C. destination MAC address
D. destination IP address
E. source MAC address
F. destination IP address
Question 6:
Speaking of port security, name the three available modes and identify the default.
Question 7:
Exactly what is prevented by the proper use of Spanning Tree Protocol?
Answers right after this brief and important message!
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Answers:
1. The switch checks the source MAC address of the frame before anything else.
2. "A". This is called a "unknown unicast frame".
3. "D". When the destination MAC address of the frame is known, the frame is forwarded.
4. The MAC address of a broadcast frame is the "all-Fs" address... ff-ff-ff-ff-ff-ff.
5. "E". The source MAC address of the frame is essentially the frame's password.
6. The available modes are shutdown, protect, and restrict, with shutdown as the default.
7. STP prevents switching loops, as opposed to routing loops.
That's it for this CCNA practice exam, but just click that link for plenty more - and for over 300 Cisco CCNA and CCNP tutorials, visit our Tutorials page!
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