Cisco Introduction to Cisco Networking Technologies

QUESTION NO: 1
WAN data link encapsulation types include which of the following? (Choose two.)

A. T1 B. Frame Relay C. ISDN D. PPP E. DSL

Correct Answer: B,D

QUESTION NO: 2
Which IOS user EXEC command will allow a network technician to determine which router in the path to an unreachable network host should be examined more closely for the cause of the network failure?

A. Router> ping B. Router> show cdp neighbors C. Router> telnet D. Router> show interface E. Router> trace F. Router> show ip route

Correct Answer: E

QUESTION NO: 3
Refer to the exhibit. Why was this message received?

A. No enable secret password has been set. B. The login command has not been set on CON 0. C. The login command has not been set on the VTY ports. D. No VTY password has been set. E. No enable password has been set. F. No console password has been set.

Correct Answer: D

QUESTION NO: 4
According to the information provided in the exhibit, from where was the currently running version of IOS loaded?

A. TFTP server B. NVRAM C. flash D. ROM

Correct Answer: D

QUESTION NO: 5
Refer to the exhibit. SwitchA receives the frame with the addressing shown. According to the command output also shown in the exhibit, how will SwitchA handle this frame?

A. It will drop the frame. B. It will forward the frame out port Fa0/3 only. C. It will flood the frame out all ports except Fa0/3. D. It will flood the frame out all ports.

Correct Answer: C

QUESTION NO: 6
How many simultaneous Telnet sessions does a Cisco router support by default?

A. 1 B. 6 C. 3 D. 5 E. 2 F. 4

Correct Answer: D

QUESTION NO: 7
What is the subnet address for the IP address 172.19.20.23/28?

A. 172.19.20.20 B. 172.19.20.32 C. 172.19.20.16 D. 172.19.20.0 E. 172.19.20.15

Correct Answer: C

QUESTION NO: 8
When files are transferred between a host and an FTP server, the data is divided into smaller pieces for transmission. As these pieces arrive at the destination host, they must be reassembled to reconstruct the original file. What provides for the reassembly of these pieces into the correct order?

A. the TTL in the IP header B. the Start Frame Delimiter in the 802.3 Preamble C. the sequence number in the TCP header D. the frame check sequence in the Ethernet frame trailer E. the acknowledgement number in the segment header

Correct Answer: C

QUESTION NO: 9
A network administrator is having trouble with a remote router. The administrator connects to the router by Telnet and types a debug command, but no debug output appears on the screen. What command should the administrator type to view the debug output?

A. Router# terminal monitor B. Router# debug all C. Router# show debug D. Router# enable debug E. Router# no debug *

Correct Answer: A

QUESTION NO: 10
Which two statements describe the operation of the CSMA/CD access method? (Choose two.)

A. The use of hubs to enlarge the size of collision domains is one way to improve the operation of the CSMA/CD access method. B. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data. C. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting. D. After a collision, the station that detected the collision has first priority to resend the lost data. E. After a collision, all stations involved run an identical backoff algorithm and then synchronize with each other prior to transmitting data. F. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.

Correct Answer: B,C

Cisco Introduction to Cisco Networking Technologies - 640-821 Exam Questions