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(huì)話層
D.表示層

A.Onl ypasswords configured afte rthe command has been entered will be encrypted.
B.Only the enable password will be encrypted.
C.Only the enable secret password will be encrypted
D.It will encrypt the secret password and remove the enable secret password from the configuration.
E.It will encrypt all current and future passwords.

A.用于檢查網(wǎng)管工作是否正常
B.用于檢查網(wǎng)絡(luò)連接是否可通
C.用于分析網(wǎng)絡(luò)在哪里出現(xiàn)了問題

A.It creates a VLAN 999 interface.
B.It designates VLAN 999 for untagged traffic.
C.It blocks VLAN 999 traffic from passing on the trunk.
D.It designates VLAN 999 as the default for all unknown tagged traffic.

A.在終端設(shè)備之間傳送比特流
B.建立、維護(hù)虛電路，進(jìn)行差錯(cuò)校驗(yàn)和流量控制
C.定義電壓、接口、線纜標(biāo)準(zhǔn)、傳輸距離等特性

A.190.0.0.0
B.190.233.0.0
C.190.233.27.0
D.190.233.27.1