Jul 24, 2012

CCNA 1 Final Answers Updated 2012


1.As network administrator, what is the subnet mask that allows 510 hosts given the IP address

2.Which combination of network id and subnet mask correctly identifies all IP addresses from through

3.Which two functions of the OSI model occur at layer two? (Choose two.) 

physical addressing




media access control

4.Refer to the exhibit. 

On the basis of the IP configuration that is shown, what is the reason that Host A and Host B are unable to communicate outside the local network? 

Host A was assigned a network address.

Host B was assigned a multicast address.

Host A and Host B belong to different networks.

The gateway address was assigned a broadcast address.

5.Refer to the exhibit.

What is the correct destination socket number for a web page request from Host A to the web server? 



6.The Layer 4 header contains which type of information to aid in the delivery of data? 

service port number

host logical address

device physical address

virtual connection identifier
7.Refer to the exhibit.

The network containing router B is experiencing problems. A network associate has isolated the issue in this network to router B. What action can be preformed to correct the network issue? 

issue the clock rate command on interface Serial 0/0/0

issue the description command on interface Serial 0/0/1

issue the ip address command on interface FastEthernet 0/0

issue the no shutdown command on interface FastEthernet 0/1

8.Refer to the exhibit.

Which set of devices contains only intermediary devices? 

A, B, D, G

A, B, E, F

C, D, G, I

G, H, I, J

9.When connectionless protocols are implemented at the lower layers of the OSI model, what is usually used to acknowledge that the data was received and to request the retransmission of missing data? 




a connectionless acknowledgement

an upper-layer, connection-oriented protocol or service
10.Which OSI layer uses a connection-oriented protocol to ensure reliable delivery of data? 

application layer

presentation layer

session layer

transport layer


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