单项选择题Which of the addresses below is an example of a valid unicast address?()

A.172.31.128.255./18
B.255.255.255.255
C.192.168.24.59/30
D.224.0.0.5
E.All of the above


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1.单项选择题Which one of the protocols below allows a router to respond to an ARP request destined to a remote host?()

A. Gateway DP
B. Reverse ARP
C. proxy ARP
D. Inverse ARP
E. indirect ARP

2.单项选择题Which of the following processes, is used to find the hardware address of a LAN device?()

A. Inverse-ARP
B. Reverse-ARP
C. Proxy ARP
D. ARP

3.多项选择题Which of the following are actual varieties of network crosstalk?()

A. near-end crosstalk(NEXT)
B. middle open-end crosstalk(MOEXT)
C. power sum near-end crosstalk(PSNEXT)
D. jitterry crosstalk(JEXT)
E. far end crosstalk(FEXT)

5.单项选择题What is the maximum data rate specified by the IEEE 802.11B standard for wireless LANS?()

A. 10 Mbps
B. 11 Mbps
C. 54 Mbps
D. 100 Mbps
E. none of the above

6.单项选择题Which IEEE standard is used to define Wi-Fi?()

A. IEEE 802.3
B. IEEE 802.5
C. IEEE 802.11h
D. IEEE 802.11c
E. IEEE 802.11

7.单项选择题Which of the following data network would you implement if you wanted a wireless network that had a relatively high data rate, but was limited to very short distances?()

A. Broadband personal comm. Service (PCS)
B. Broadband circuit
C. Infrared
D. Spread spectrum
E. Cable

8.多项选择题When you compare the differences between half-duplex and full-duplex Ethernet,which of the following characteristics are exclusive to half-duplex?()

A. Half-duplex Ethernet operates in a shared collision domain.
B. Half-duplex Ethernet operates in an exclusive broadcast domain.
C. Half-duplex Ethernet has efficient throughput.
D. Half-duplex Ethernet has lower effective throughput.
E. Half-duplex Ethernet operates in an exclusive collision domain.

9.多项选择题What are the differences between full-duplex Ethernet and half-duplex Ethernet?()

A. Half-duplex Ethernet operates in a shared collision domain.
B. Full-duplex Ethernet has a lower effective throughput.
C. Half-duplex Ethernet operates in a private collision domain.
D. Full-duplex Ethernet allows two-way communication.
E. Half-duplex Ethernet operates in a private broadcast domain.

10.多项选择题Why is full-duplex Ethernet superior to its single-duplex counterpart?()

A. It uses inexpensive hubs
B. It operates without collisions
C. It operates on switches
D. It provides faster data transfer
E. It utilizes fewer wiring pairs

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You are configuring a new Catalyst switch that you want to manage remotely from workstations on other network segments within your enterprise.Which of the following are required to allow remote management of the switch over IP?()

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What is the purpose of pressing the Ctrl+Break keys during the router password recover procedure?()

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Identify three valid host addresses in the 192.168.27.0 network with a subnet mask of 255.255.255.240. ()

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All WAN links is side the TestKing.com network use PPP with for authentication security. Which command will display the CHAP authentication process as it occurs between two routers in the network?()

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Five minutes after issuing the show running-config command, a technician enters the command again and notices that several access list statements have been altered. Because of this, the technician believes that the router is being configured by an unknown person through Telnet. Before changing the router passwords, the technician would like to discover if anyone is connected to the router by Telnet and stop them from making further changes.Which commands will accomplish these options?()

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Which command is used to display the placement and direction of an IP access control list on a router?()

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Which of the following if addresses can be assigned to host devices?()

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What is the purpose of typing o/r 0x2142 during a password recover procedure on a 2500 series router?()

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Which statement describes the rule of split horizon?()

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What should the configuration register value be after successfully completing the password recover procedure and returning the router to normal operation? ()

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