(4)A.物理层 B.数据链路层C.网络层 D.传输层 ()A. TB B SRB C. SRT 答案:(1)(5) DABBC JBIG属于_(1)数据压缩系统。二维压缩技术是指_(2),在压缩算法中,属于二维压缩 技术的是(3)。MMR数据压缩系统是在MR的基础上改进而来的,它主要在(4)方面进 行了改进和提高。下列压缩技术中,(5)属于动态图像压缩技术 (1)A.黑白文稿 B.灰色文稿 C.彩色文稿 D.灰度文稿 (2)A.在任选两个方向进行压缩 B.在水平方向和垂直方向都进行了压缩 C.在垂直相反方向进行压缩 D在水平相反方向进行压缩 (3)A. MH B.改进MH D JBIG (4)A.压缩效率 B.压缩速度和容错能力 C.压缩编码能力 D.差错控制能力 (A MH B. MR C MMR D MPEG 答案:(1)(5) ABCAD 网络管理协议中,SNMP网络管理协议的最新版本是(1),改版本在(2)方面有了很大 的改善。SNMP提供了4类管理操作,提取特定的网络管理信息可以采用(3)操作。LMMP 是面向_(4)的一种管理协议,工作在(5)。 (1)A. SNMPv1 B SNMPv 2 C SNMPv3 D. SNMPv4 (2)A.安全性 B.可靠性 C.体系结构D.远程管理 (3)A. get B get C. set (4)A.令牌环 B.广域网 C.城域网 D.局域网 (5)A.链路层 B.MAC层 C.LLC层 D.网络层 答案:(1)(5) CAADA SdlC was invented by iBM to replace the older bisynchronous protocol for wide area connections between IBM equipment. A varietion of the (1)protocol called NRM is essentially the same as sdlc SDLC is (2)protocol like HDLC, Frame Relay or X 25.An SDLC network is made up of ()that controls all communications, and (4). It is capable of (5)operation, but almost all practical applications aare strictly half duplex (1)A HDLC B Frame Relay C. X 25 D.X.21 DA. a peer to peer B a point-to-point D a peer to (3)A. a primary station B one or more primary stations C. a secondary station D one or more secondary station (4)A. a primary station B one or more primary stations C. a secondary station D one or more secondary stations (5)A half duplex B full duplex⑷A.物理层 B.数据链路层 C.网络层 D.传输层 ⑸A.TB B.SRB C.SRT D.TBR 答案：⑴~⑸ DABBC JBIG 属于_(1)_数据压缩系统。二维压缩技术是指_(2)_，在压缩算法中，属于二维压缩 技术的是_(3)_。MMR 数据压缩系统是在 MR 的基础上改进而来的 ，它主要在_(4)_方面进 行了改进和提高。下列压缩技术中，_(5)_属于动态图像压缩技术。 ⑴A.黑白文稿 B.灰色文稿 C.彩色文稿 D.灰度文稿 ⑵A.在任选两个方向进行压缩 B.在水平方向和垂直方向都进行了压缩 C.在垂直相反方向进行压缩 D.在水平相反方向进行压缩 ⑶A.MH B.改进 MH C.MR D.JBIG ⑷A.压缩效率 B.压缩速度和容错能力 C.压缩编码能力 D.差错控制能力 ⑸A.MH B.MR C.MMR D.MPEG 答案：⑴~⑸ ABCAD 网络管理协议中，SNMP 网络管理协议的最新版本是_(1)_，改版本在_(2)_方面有了很大 的改善。SNMP 提供了 4 类管理操作，提取特定的网络管理信息可以采用_(3)_操作。LMMP 是面向_(4)_的一种管理协议，工作在_(5)_。 ⑴A.SNMPv1 B.SNMPv2 C.SNMPv3 D.SNMPv4 ⑵A.安全性 B.可靠性 C.体系结构 D.远程管理 ⑶A.get B.get－next C.set D.trap ⑷A.令牌环 B.广域网 C.城域网 D.局域网 ⑸A.链路层 B.MAC 层 C.LLC 层 D.网络层 答案：⑴~⑸ CAADA SDLC was invented by IBM to replace the older Bisynchronous protocol for wide area connections between IBM equipment . A varietion of the _(1)_ protocol called NRM is essentially the same as SDLC. SDLC is _(2)_ protocol like HDLC , Frame Relay or X.25.An SDLC network is made up of _(3)_ that controls all communications , and _(4)_ .It is capable of _(5)_ operation, but almost all practical applications aare strictly half duplex. ⑴A.HDLC B.Frame Relay C.X.25 D.X.21 ⑵A.a peer to peer B.a point-to-point C.not a peer to peer D.a peer to peers ⑶A.a primary station B.one or more primary stations C.a secondary station D.one or more secondary stations ⑷A.a primary station B.one or more primary stations C.a secondary station D.one or more secondary stations ⑸A.half duplex B.full duplex