單項(xiàng)選擇題Error detection schemes check errors in the data packets by reading which field frame IDs?()

A.MTU
B.PDU
C.FCS
D.Flag
E.MAC
F.BRI


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1.單項(xiàng)選擇題Which frame field do error detection schemes view to perform their function?()

A. ERR
B. Flag
C. FCS
D. MTU
E. MAC
F. PDU

2.單項(xiàng)選擇題Which of one the following fields is contained within an IEEE Ethernet frame header?()

A. source and destination MAC address
B. source MAC address and destination network address only
C. source and destination network address only
D. source network address and destination MAC address
E. source and destination MAC address and source and destination network address

3.單項(xiàng)選擇題Which device enables a router serial interface to connect to the ISDN BRI?()

A.NT2
B.NT1
C.TE
D.TA
E.TE1

4.多項(xiàng)選擇題What functions do routers perform in a network?()

A. Packet Switching
B. Access Layer Security
C. Path Selection.
D. VLAN Membership Assignment.
E. Bridging between LAN segments.
F. Micro-segmentation of Broadcast Domains.

5.單項(xiàng)選擇題If NVRAM lacks boot system commands, where does the router look for the Cisco IOS by default?()

A.ROM
B.RAM
C.Flash
D.Bootstrap
E.Startup-.config

6.多項(xiàng)選擇題When selecting a Network Interface Card (NIC), which of the following factors need to be considered?()

A. The type of application used on the network
B. The type of system bus used by the computers
C. The type of memory installed in each computer
D. The type of media used in the network topology
E. The type of protocols used in the network
F. The physical layout of the network hosts

7.多項(xiàng)選擇題On a Cisco network, which of the following modes of flow control are commonly used to mitigate the effects of busy data networks?()

A. Source Quench.
B. Learning.
C. Buffering.
D. Windowing.
E. Cut-Through.

8.多項(xiàng)選擇題After replacing the NIC card of a PC on the LAN, your Cisco switch shows a new MAC address is attached to that port. Which of the following answer choices below correctly describe a MAC address?()

A. It is a globally unique IP address.
B. It is a globally unique 48 bit address
C. It is provided by the manufacturer of the NIC.
D. It is used as part of the IPX/SPX configuration.
E. It is a logical address.

9.多項(xiàng)選擇題Which of the following correctly describe the various functions and virtues of a router?()

A. Packet switching
B. Collision prevention on a LAN segment.
C. Packet filtering
D. Broadcast domain enlargement
E. Broadcast forwarding
F. Internetwork communication

10.多項(xiàng)選擇題When comparing and contrasting the similarities and differences between bridges and switches, which of the following are valid statements?()

A. Bridges are faster than switches because they have fewer ports.
B. A switch is a multiport bridge,
C. Bridges and switches learn MAC addresses by examining the source MAC address of each frame received.
D. A bridge will forward a broadcast but a switch will not.
E. Bridges and switches increase the size of a collision domain.
F. None of the above statements are true.

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