Monday, March 9, 2015

Random Cisco based networking questions - CCNA - Part 2

Part 2 in the series of random networking questions for 2015, to keep you current or stimulate thought..


 1. Where would you place more specific tests in your access list?

A) At the top
B) At the bottom
C) Placement doesn't matter


2. Routers are what by default?

A) DTE devices
B) DCE devices

3. Which WAN protocol is capable of carrying video, Circuit Switched Data And Telephone Services using normal phone network?

A) Frame Relay
B) ISDN
C) PPP
D) ISL

4. What protocol range would you use for IP in ACLs?

A) 1-99
B) 800-899
C) 200-299
D) 1000-1099

5. What IP address will test the internal loopback of a node?

A) 127.0.0.1
B) 255.255.255.255
C) 0.0.0.0
D) 126.0.0.1
E) 127.0.0.0

6. When each network segment uses a different subnet mask this is refered to as...

A) Classful routing
B) Classless routing






amaysim - One pure SIM






1. Answer A

Always organise your access lists so the more specific tests are at the top.

2. Answer A

A router is configured as a DTE by default. If a clock rate speed is not specified, the router is configured as a DTE. If a clock rate speed is specified, the router is configured as a DCE.

DTE = Data Terminal Equipment
DCE = Data Communications Equipment

 3. Answer B

ISDN (Integrated Services Digital Network) is a set of standards for simultaneous digital communications (voice, video, data) over the traditional circuits of the public switched telephone network.

4. Answer A

Standard Cisco IOS Help output
Router#configure terminal
Router(config)#access-list ?
 <1-99>  IP standard access list
 <100-199> IP extended access list
 <1100-1199> Extended 48-bit MAC address access list
 <1300-1999> IP standard access list (expanded range)
 <200-299> Protocol type-code access list
 <2000-2699> IP extended access list (expanded range)
 <700-799> 48-bit MAC address access list
 rate-limit Simple rate-limit specific access list


5.  Answer A

127.0.0.1 is the loopback address in IP, it is a test mechanism for network adapters. Messages sent to 127.0.0.1 do not get delivered to the network. The NIC intercepts all loopback messages and returns them to the sending application.

6. Answer B

http://en.wikipedia.org/wiki/Classful_network


More coming, please leave comments if you find any errors or want to debate an answer :-)

"Whatever you are, be a good one."
Abraham Lincoln