CCNA试题答案1. What is not a characteristic of a network segment on a switch?
A. The segment has its own collision domain
B. The segment can translate from one media to a different media
C. All devices in the segment are part of the same broadcast domain
D. One device per segment can currently send frames to the switch
ANS: B
CCNA试题答案2.Which two statements about frame tagging are true?(2)
A.filtering table is developed for each switch.
B.Frame tagging assigns a unique user defined ID to each frame.
C.A unique identifier is placed in the header of each frame as it is forwarded between switches.
D.Frame tagging is a technique that examines particular information about each frame based on use defined offsets.
ANS: B,C
CCNA试题答案3.Which three basic switch functions increase available bandwidth on the networks/
A. loop avoidance
B. address learning
C. hop cout limiting
D. broadcast filtering
E. packet forward/filtering
ANS: A，B，E
CCNA试题答案4. Which statement is true when a broadcast is sent in an Ethernet/802.3 itan?
A.The IP shored used is 255 255 255 0
B.The IP address used is 255 255 255 255
C.The MAC address used is 00 00 00 00 00 00
D.The MAC address used is FF FF FF FF FF FF
ANS: D
CCNA试题答案5. What are four functional characteristics of the network layer of the OSI model?
A.It uses a two part address
B.It maintains routing tables
C.It uses broadcast addresses
D.It establishes network addresses
E.It provides access to the LAN media
F.It provides media independence for upper layers
G.It provides path selection for internetwork communication
ANS: A,B,D,G
CCNA试题答案6.When you use the Cisco ISO command 'show configuration' on a router, which part of the output shows the specific configured IP addresses and subnet masks?
a.The IP host table
b.The interface output
c.Each section of the output
d.The global configuration statements
e.The section under the autonomous system number
ANS: B
CCNA试题答案8.Which two statements about reliable connection oriented data transfer are true?
A.Recipients acknowledge receipt of data
B.When buffers are filled to capacity, datagrams are discarded and not retransmitted
C.Windows are used to control the amount of outstanding acknowledged data segments
D.If the segments timer expires between receipt of an acknowledgement the sender drops the connection
E.The receiving device waits for acknowledgements from the sending device before accepting more data segments
ANS: A,C
CCNA试题答案9. Which two does 100BaseT use?
A. CSMA/CD
B. Switching with 53-type cells
C. IEEE 802.5
D. 802.3u
ANS: A,D
CCNA试题答案10.You are configuring a frame relay router with sub interfaces on interface serial 0. Which sub interface number could you use for this configuration?
A.1 and 2
B.0.2 and 0.3
C.1 and 1.1
D.0.1a and 0.1b
ANS: B
CCNA试题答案12.Which line from a 'show spantree' command output indicates that Virtual LAN1(VLAN1) is functioning properly?
A.Root mode is fast ethernet 0/26.
B.Port ethernet 0/1 of VLAN is forwarding.
C.Designated port in ethernet 0/1 path cos10.
D.Designated root has priority 0, address 0000.588fb600
E.VLAN1 is executing the ISL compatible spanning tree protocol.
ANS: E
这就是CCNA试题答案。
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