What is the maximum&...

单项选择题X 纠错

What is the maximum data rate specified for IEEE 802.11b WLANs?（）

A.10Mbps
B.11Mbps
C.54Mbps
D.100Mbps

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While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate?（）

A.The port is experiencing errors.
B.The port is administratively disabled.
C.The port is blocked by spanning tree.
D.The port has an active link with normal traffic activity.

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On point-to-point networks, OSPF hello packets are addressed to which address?（）

A.127.0.0.1
B.172.16.0.1
C.192.168.0.5
D.223.0.0.1
E.224.0.0.5
F.254.255.255.255

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In order to allow the establishment of a Telnet session with a router, which set of commands must be configured?（）

A.A
B.B
C.C
D.D
E.E
F.F

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While troubleshooting a network connectivity problem, a technician observes steady link lights on both the workstation NIC and the switch port to which the workstation is connected. However, when the ping command is issued from the workstation, the output message "Request timed out." is displayed. At which layer of the OSI model does the problem most likely exist?（）

A.the session layer
B.the protocol layer
C.the data link layer
D.the access layer
E.the network layer
F.the application layer

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多项选择题

Which two values are used by Spanning Tree Protocol to elect a root bridge? (Choose two.)（）。

A.amount of RAM
B.bridge priority
C.IOS version
D.IP address
E.MAC address
F.speed of the links

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In the implementation of VLSM techniques on a network using a single Class C IP address, which subnet mask is the most efficient for point-to-point serial links? （）

A.255.255.255.0
B.255.255.255.240
C.255.255.255.248
D.255.255.255.252
E.255.255.255.254

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Which routing protocol by default uses bandwidth and delay as metrics?（）

A.RIP
B.BGP
C.OSPF
D.EIGRP

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多项选择题

A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device? (Choose two.)（）

A.hub
B.router
C.switch
D.STP
E.subinterfaces
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A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?（）

A.This is a 10 Mb/s switch port.
B.This is a 100 Mb/s switch port.
C.This is an Ethernet port operating at half duplex.
D.This is an Ethernet port operating at full duplex.
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单项选择题

Which spread spectrum technology does the 802.11b standard define for operation?（）

A.IR
B.DSSS
C.FHSS
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E.IR, FHSS, and DSSS

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