非同一系统的任何机关相互行文都使用（)。A．上行文B．平行文C．通知D．下行文

ddress 189.66.1.0 by its Internet Service Provider. If you divide the network range by using the 255.255.255.224 subnet mask, how many hosts can be supported on each network？（）

A.14

B.16

C.30

D.32

E.62

F.64

. TestKing wants you to subnet the network to provide a separate subnet for each of its 5 departments. Each subnet must support at least 24 hosts.Which network mask should you use？（）

A.255.255.255.192

B.255.255.255.224

C.255.255.255.240

D.255.255.255.248

E.255.255.255.252

F.255.255.255.254

ISP then assigned this entire Class C network to one of its Asian customers. Network 200.1.2.0/24 has yet to be assigned to any ISP.Which of the following is most likely to be true？（）

A. 200.1.2.0/24 could be assigned to any registrar or ISP in the worlD

B. 200.1.2.0/24 will be assigned in the same g eography (Asia) as 200.1.1.0/24

C. 200.1.2.0/24 cannot be assigned as public address spacE

D. Routers inside North American ISPs increase their routing table size by 1 as a result of the customer with 200.1.1.0/24 connecting to the Internet

A. The network 10.0.10.0/24 will be allowed and assigned a metric of 200

B. All networks except 10.0.0.0/8 will be allowed and assigned a metric of 200

C. The network 172.16.0.0/16 will be allowed and assigned a metric of 200

D. The network 192.168.1.0 will be allowed and assigned a metric of 100

erfaces, all assigned addresses in class A network 10.0.0.0. Router R3 has some working interfaces in class A net work 10.0.0.0, and others in class B network 172.16.0.0. The engineer experiments with the auto -summary command on R2 and R3, enabling and disabling the command in various combinations.Which of the following combinations will result in R1 seeing a rout e for 172.16.0.0/16, instead of the individual subnets of class B network 172.16.0.0？（）

A. auto - summary on R2 and no auto - summary on R3

B. auto - summary on R2 and auto - summary on R3

C. no auto -summary on R2 and no auto- summary on R3

D. no auto - summary on R2 and auto - summary on R3

main named All network servers run Windows Server 2003, and all client computers run Windows XP Professional.You create a shared folder named TestKing Docs on a member server named TestKing3. TestKing Docs will store project documents.You need to ensure that users can access previous version of the documents in TestKing Docs.What should you do？（）

A. Modify the Offline Settings option for TestKing Docs to make all files available offline.

B. Configure shadow copies of the volume containing TestKing Docs.

C. Use Task Scheduler to create a job that uses the Copy command to copy all changed documents to another folder every day.

D. Use the Backup utility to schedule a backup of all changed documents every hou

A．/27

B． /28

C． /29

D． /30

A．/27

B． /28

C． /29

D． /30

A．131.1.123.30

B． 131.1.123.31

C． 131.1.123.32

D． 131.1.123.33

A. IPv6 allows a host to create its own IPv6 address that will allow it to communicate to other devices on a network configured via DHCP. IPv4 does not provide a similar capability for hosts.

B. IPv6 provides for more host IP addresses but IPv4 provides for more network addresses.

C. Hosts can be configured to receive both IPv4 and IPv6 addresses via DHCP.

D. Host configuration options for IPv4 can be either statically assigned or assigned via DHCP.Host configuration options for IPv6 can be statically assigned only.

E. IPv4 and IPv6 addresses c an be simultaneously assigned to a host but not to a router interface.