A.MD5
B.RSA
C.HMAC
D.SHA-1

A.you can apply multiple access lists with the same protocol or in different…
B.you can config one access list，per direction，per layer 3 protocol
C.you can place as many access lists as you want on any interface
D.you can apply ony one access list on any interface

A.to confine network instability to single areas of the network
B.to reduce the complexity of router configuration
C.to speed up convergence
D.to lower costs by replacing routers with distribution layer switches
E.to decrease latency by increasing bandwidth
F.to reduce routing overhead

A.The is a virtually limitless supply of IP addresses
B.Telnet access requires a new password at first login
C.Telnet access requires a password
D.Telnet access is denied

A.認(rèn)證
B.完整性
C.確認(rèn)機(jī)制
D.機(jī)密性

A.光纖通道
B.FDDI
C.iSCSI
D.FCIP

A.multicast
B.broadcast
C.allcast
D.podcast
E.anycast

A.lowest port MAC address
B.port priority number and MAC address.
C.VTP revision number
D.highest port priority number.
E.path cost

A.提高企業(yè)信息處理的能力
B.降低資本和運(yùn)行的費(fèi)用
C.提高靈活性，以支持不斷變化的業(yè)務(wù)優(yōu)先級(jí)、應(yīng)用增長(zhǎng)和收入增長(zhǎng)
D.改善遠(yuǎn)距離復(fù)制、備份和恢復(fù)，以滿足法規(guī)要求和行業(yè)最佳做法

A.spanning-tree mode rapid-pvst
B.spanning-tree uplinkfast
C.spanning-tree backbonefast
D.spanning-tree mode mst