A.They increase the size of collision domains.
B.They allow logical grouping of users by function.
C.They can enhance network security.
D.They increase the size of broadcast domains while decreasing the number of collision domains.
E.They increase the number of broadcast domains while decreasing the size of the broadcast domains.
F.They simplify switch administration.

A.直接交換
B.采用鏈路狀態(tài)路由協(xié)議
C.水平分割
D.保持間隔
E.定義最大跳數(shù)
F.路由中毒

A.10.1.128.255
B.10.1.63.255
C.10.1.127.255
D.10.1.126.255

A.15.234.118.63
B.92.11.178.93
C.134.178.18.56
D.192.168.16.87
E.201.45.116.159
F.217.63.12.192

A.2.2.2
B.3.6.30
C.4.14.14
D.5.30.6

A.It is locally significant
B.It is globally significant
C.It is needed to identify a unique instance of an OSPF database
D.It is an optional parameter required only if multiple OSPF processes are running on the router
E.All routers in the same OSPF area must have the same process ID if they are to exchange routing information

A.10.172.13.65
B.172.16.223.125
C.172.64.12.29
D.192.168.23.252
E.198.234.12.95
F.212.193.48.254

A.512；126
B.102；262
C.102；462
D.256；254
E.192；254

A.The switch must be configured with an IP address, subnet mask, and default gateway.
B.The switch must be connected to a router over a VLAN trunk.
C.The switch must be reachable through a port connected to its management VLAN.
D.The switch console port must be connected to the Ethernet LAN.
E.The switch management VLAN must be created and have a membership of at least one switch

A.網(wǎng)絡(luò)層
B.傳輸層
C.會話層
D.表示層