A.NAT protects network security because privat enetworks are not advertised.
B.NAT accelerates the routing process because no modifications are made on the packets.
C.Dynamic NAT facilitates connections from the outside of the network.
D.NAT facilitates end-to-end communication when IPsec is enable.
E.NAT eliminates the need to re-address all host that require extemal access.
F.NAT conserves addresses through host MAC-level multiplexing.

A.直接路由、靜態(tài)路由、rip、ospf
B.直接路由、ospf、靜態(tài)路由、rip
C.直接路由、ospf、rip、靜態(tài)路由
D.直接路由、rip、靜態(tài)路由、ospf

A.默認(rèn)路由。
B.直接路由。
C.間接路由。
D.以上都不對(duì)。

A.Xmodem
B.Ymodem
C.Zmodem
D.Ymodem-G

A.數(shù)據(jù)位為8位，奇偶校驗(yàn)無(wú)，停止位為1.5位
B.數(shù)據(jù)位為8位，奇偶校驗(yàn)有，停止位為1.5位
C.數(shù)據(jù)位為8位，奇偶校驗(yàn)無(wú)，停止位為1位
D.數(shù)據(jù)位為8位，奇偶校驗(yàn)有，停止位為2位