Friday, May 16, 2014

A new series of Cisco base networking questions for 2014 - part 4

Another selection of random Networking / IT based questions and answers to get the grey matter ticking..enjoy

1. What is the correct sequence of Spanning Tree states?

A) Blocking, Listening, Learning, Forwarding, Disabled
B) Disabled, Blocking, Listening, Learning, Forwarding
C) Learning, Listening, Forwarding, Disabled, Blocking
D) Listening, Learning, Forwarding, Blocking, Disabled


 2. What type of NAT allows you to map multiple unregistered IP addresses to a single registered IP address?

A) Static NAT
B) Dynamic NAT
C) Overloading (Port Address Translation)


3.  You are having to enter a certain command into the router several times, how would you recall the last entry?

A) Up arrow
B) Down arrow
C) Ctrl+N
D) Shift-P
E) Alt-P


 4. What is responsible for ensuring a router is functional and the interfaces are present on booting?

A) Bootstrap
B) POST
C) ROM monitor
D) NVRAM
E) Configuration register


5.  What is the Spanning Tree forward delay?

A) The time that is spent in the Listening and Learning states
B) 50 seconds
C) Time taken for a switch to go from Listening to Forwarding
D) Time taken for a switch to go from Blocking to Forwarding



6. What describes the role of the Session layer?

A) Provides transport services
B) Translates between different data formats
C) Supports communication between applications
D) Establishes and terminates communications between applications 





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1,  Correct Answer A

STP switch port states:

Blocking
Listening
Learning
Forwarding
Disabled


2. Correct Answer C

 PAT (Port Address Translation) allows you to map multiple unregistered IP addresses to a single registered IP address

3. Correct Answer A

Cisco Keyboard Shortcut Actions

Up Arrow Displays your previous commands.  (command history)
TAB Key Completes a partially typed CLI commands.
CTRL+Z Takes you back to Privileged EXEC Mode.

CTRL+A Places the cursor at the beginning of a line.
CTRL+E Places the cursor at the end of a line.
CTRL+R Redisplays the current command line.
CTRL+W Erases a word (behind the cursor).
CTRL+U Erases an entire line.


4. Correct Answer B

POST (Power-on-self-test) stored in ROM performs a basic router health-check on booting.


5. Correct Answer A

Forward delay — The time that is spent in the listening and learning state, 15 sec by default, but you can tune the time to be between 4 and 30 sec.


6. Correct Answer D

The Session Layer (layer 5) of the OSI model provides the mechanism for opening, closing and managing a session between end-user application processes.


Very random I know, how did you go? More to come, fun isn't it :-)


Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow."
~ Mary Anne Radmacher "