无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<del id="02odq"></del>

<dd id="02odq"></dd>

單項(xiàng)選擇題

Which protocol is an open standard protocol frame work that is commonly used in VPNs，to provid secureend-to-end communication？（）

A.L2TP
B.IPsec
C.PPTP
D.RSA

你可能感興趣的試題

單項(xiàng)選擇題

If an Ethernet port on a router was assigned an IP address of 172.1.1.1/20,what is the maximum number of hosts allowed on this subnet?（）

A.4094
B.1024
C.8190
D.2046
E.4096

單項(xiàng)選擇題

A network administrator is verifying the configuration of a newly installed host by establishing an FTP connection to a remote server. What is the highest layer of the protocol stack that the nework administrator is using for this operation?（）

A.application
B.presentation
C.session
D.transport
E.internet
F.datalink

<pre id="9op2u"><acronym id="9op2u"></acronym></pre>

<pre id="9op2u"><strong id="9op2u"></strong></pre>

<ruby id="9op2u"></ruby>

<ruby id="9op2u"><xmp id="9op2u"></xmp></ruby>