單項(xiàng)選擇題What occurs on a Frame Relay network when the CIR is exceeded?()

A. All TCP traffic is marked discard eligible.
B. All UDP traffic is marked discard eligible and a BECN is sent.
C. All TCP traffic is marked discard eligible and a BECN is sent.
D. All traffic exceeding the CIR is marked discard eligible.


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1.單項(xiàng)選擇題A network administrator must configure 200 switch ports to accept traffic from only the currently attached host devices. What would be the most efficient way to configure MAC-level security on all these ports?()

A. Visually verify the MAC addresses and then telnet to the switches to enter the switchport-port security mac-address command.
B. Have end users e-mail their MAC addresses. Telnet to the switch to enter the switchport-port security mac-address command.
C. Use the switchport port-security MAC address sticky command on all the switch ports that have end devices connected to them.
D. Use show mac-address-table to determine the addresses that are associated with each port and then enter the commands on each switch for MAC address port-security.

2.單項(xiàng)選擇題What is the difference between a CSU/DSU and a modem?()

A. A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line.
B. A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line.
C. A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line.
D. A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.

3.單項(xiàng)選擇題Which command reveals the last method used to powercycle a router?()

A. show reload
B. show boot
C. show running-config
D. show version

7.單項(xiàng)選擇題A company implements video conferencing over IP on their Ethernet LAN. The users notice that the network slows down, and the video either stutters or fails completely. What is the most likely reason for this?()

A. minimum cell rate (MCR)
B. quality of service (QoS)
C. modulation
D. packet switching exchange (PSE)
E. reliable transport protocol (RTP)

9.單項(xiàng)選擇題When configuring a serial interface on a router, what is the default encapsulation?()

A. atm-dxi
B. frame-relay
C. hdlc
D. lapb
E. ppp

10.單項(xiàng)選擇題Which command displays CPU utilization?()

A. show protocols
B. show process
C. show system
D. show version

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Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?()

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After the show ip route command has been entered,the follwing routes are displayed.Which route will not be entered into the routing table of a neighboring router?()

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Which cisco ios command can help to determine the timing of various debug events,relative to each other,when you are debugging a complicated router issue?()

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Three access ports have been installed and configured to a small office.What term defines the wireless topology?()

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Which pairing reflects a correct protocol-and-metric relationship?()

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What is the subnetwork address for a host with the IP address 201.100.5.68/28?()

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