ccna interview questions and answers

Part - 16 CCNA Interview Questions and Answers

76 As the system administrator, you enter the following commands at the command prompt:
ipx routing
access-list 800 permit 2b 4d
int e0
ipx network 4d
ipx access-group 800 out
int e1
ipx network 2b
int e2
ipx network 3c

What did these command accomplish?

A. Traffic from network 4c destined for network 4d will be forwarded out Ethernet0.

B. Traffic from network 3c destined for network 4d will be forwarded out Ethernet0.

C. Traffic from network 2b destined for network 4d will be forwarded out Ethernet0.

D. Traffic from network 4d destined for network 2d will be forwarded out Ethernet0.

Ans C

Traffic from network 2b destined for network 4d will be forwarded out Ethernet0. The other interfaces E1 and E2 are not subject to the access list since they lack the access group statement to link them to access list 800.

78 The following commands were entered at the command prompt of a Cisco router. What do they accomplish?
access-list 1000 deny 9e.1234.5678.1212 4
access-list 1000 permit -1
interface ethernet 0
ipx network 9e
interface ethernet 1
ipx network 4a
interface serial 0
ipx network 1
ipx output-sap-filter 1000

A. File server advertisements from server 9e.1234.5678.1212 will not be forwarded on interface S0.

B. All other SAP services, other than file server, from any source will be forwarded on S0.

C. All other SAP services, other than print server, from any source will be forwarded on S0.

D. Print server advertisements from server 9e.1234.5678.1212 will not be forwarded on interface S0.

Ans A & B

File server advertisements from server 9e.1234.5678.1212 will not be forwarded on interface S0. All other SAP services, other than file server, from any source will be forwarded on S0.

79 You receive "input filter list is 800 and output filter list is 801" as part of the output from a show interfaces command. What kind of traffic are you filtering?

A. IPX/SPX

B. TCP/IP

C. LocalTalk

D. DDR

Ans: A

Because the access list is numbered in the 800 range, you are filtering IPX/SPX traffic.

80 Which service uses telephone control messages and signals between the transfer points along the way to the called destination?

A. Signaling System 7 (SS7)

B. Time-division Multiplexing (TDM)

C. X.25

D. Frame relay

Ans: A

Signaling System 7 (SS7) uses telephone control messages and signals between the transfer points along the way to the called destination. Time-division Multiplexing (TDM) has information from multiple sources and allocates bandwidth on a single media. Circuit switching uses signaling to determine the call route, which is a dedicated path between the sender and the receiver. Basic telephone service and Integrated Services Digital Network (ISDN) use TDM circuits. X.25 and Frame Relay services have information contained in packets or frames to share non-dedicated bandwidth. X.25 avoids delays for call setup. Frame Relay uses permanent virtual circuits (PVCs).