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

<dl id="xmdod"></dl>

單項(xiàng)選擇題

Which layer of the OSI reference model uses flow control, sequencing, and acknowledgements to ensure that reliable networking occurs?（）

A. data link
B. network
C. transport
D. presentation
E. physical

你可能感興趣的試題

單項(xiàng)選擇題

Which layer of the OSI reference model uses the hardware address of a device to ensure message delivery to the proper host on a LAN?（）

A. physical
B. data link
C. network
D. transport

單項(xiàng)選擇題

Which option is a valid IPv6 address?（）

A. 2001:0000:130F::099a::12a
B. 2002:7654:A1AD:61:81AF:CCC1
C. FEC0:ABCD:WXYZ:0067::2A4
D. 2004:1:25A4:886F::1

<ins id="5e5cv"></ins>

<pre id="5e5cv"><strong id="5e5cv"></strong></pre>

<dl id="5e5cv"></dl>