單項(xiàng)選擇題You have a network that supports VLSM and you need to reduce IP address waste in your point to point WAN links. Which of the masks below would you use?（）

A./38
B./30
C./27
D./23
E./18
F./32


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1.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

2.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.



3.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

4.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


最新試題

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

題型：?jiǎn)雾?xiàng)選擇題

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

題型：多項(xiàng)選擇題

An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location? （）

題型：多項(xiàng)選擇題

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

題型：?jiǎn)雾?xiàng)選擇題

Which of the following contribute to congestion on an Ethernet network?（）

題型：多項(xiàng)選擇題

The network 172.12.0.0 needs to be divided into subnets where each subnet has the capacity of 458 IP addresses.What would be the correct subnet mask to accomplish this division keeping the number of subnets at the maximum? （）

題型：?jiǎn)雾?xiàng)選擇題

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?（）

題型：多項(xiàng)選擇題

The following access list was applied outbound on he E0 interface connected to the 192.168.1.8/29 LAN:access-list 123 deny tcp 192.168.1.8 0.0.0.7 eq 20 anyaccess-list 123 deny tcp 192.168.1.9 0.0.0.7 eq 21 anyWhat effect will this access list have?（）

題型：?jiǎn)雾?xiàng)選擇題

Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts?（）

題型：多項(xiàng)選擇題