單項(xiàng)選擇題Data transfer is slow between the source and destination. The quality of service requested by the transport layer in the OSI reference model is not being maintained. To fix this issue, at which layer should the troubleshooting process begin?()

A. presentation
B. session
C. transport
D. network
E. physical


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2.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)

4.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

5.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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An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?()

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Which command displays the CHAP authentication process as it occurs between two routers?()

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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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A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?()

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What is the purpose of the cisco Vlan Trunking protocol?()

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

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At which layer of the OSI model is RSTP used to prevent loops?()

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When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()

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

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