單項(xiàng)選擇題How would you express the binary number: 10101010 in its decimal and hexadecimal forms?()

A. Decimal=160, hexadecimal=00
B. Decimal=170, hexadecimal=AA
C. Decimal=180, hexadecimal=BB
D. Decimal=190, hexadecimal=CC


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2.單項(xiàng)選擇題You have a single Class C IP address and a point-to-point serial link that you want to implement VLSM on. Which subnet mask is the most efficient?()

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

3.單項(xiàng)選擇題On the topic of VLSM, which one of the following statements best describes the concept of the route aggregation?()

A. Deleting unusable addresses through the creation of many subnets.
B. Combining routes to multiple networks into one supernet.
C. Reclaiming unused space by means of changing the subnet size.
D. Calculating the available host addresses in the AS.



4.單項(xiàng)選擇題Which one of the following varieties of NAT utilizes different ports to map multiple IP addresses to a single globally registered IP address?()

A. Static NAT
B. Port loading
C. NAT Overloading
D. Dynamic NAT
E. None of the above

5.單項(xiàng)選擇題A TestKing PC has the IP address 172.16.209.10 /22. What is the subnet of this address?()

A.172.16.42.0
B.172.16.107.0
C.172.16.208.0
D.172.16.252.0
E.172.16.254.0


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Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational? ()

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

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