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Catalyst 6500 (Catalyst OS系统)中设置主root的命令格式是______。
A.spanning-tree lan <vans> root primary
B.spanning-tree lan <vans> root secondary
C.set spantree root <vans>
D.set spantree root secondary <vans>
以下属于网络操作系统的是()
A、Unix;
B、Linux;
C、WIN98;
D、WINDOWSNT;
E、NETWARE4.11;
F、OS/2;
G、LANMANGER4.0
A.same
B.similar
C.different
D.difference
●Heterogeneous network environments consist of computer systems from (66) vendors that run (67) operating systems and communication protocols. An organization that (68) its computer resources is usually (69) the task of integrating its heterogeneous systems. Typically, each department or division has defined its own network needs (70) OS, LAN topology, communication protocols, applications, and other components.
(66) A.same
B.similar
C.different
D.difference
(67) A.same
B.similar
C.different
D.difference
(68) A.consolidates
B.consists
C.considerate
D.consoles
(69) A.faced on
B.faced with
D.faced about
D.faced up to
(70) A.in general
B.in any term
C.in set terms
D.in terms of
(66) A.same
B.similar
C.different
D.difference
(67) A.same
B.similar
C.different
D.difference
(68) A.consolidates
B.consists
C.considerate
D.consoles
(69) A.faced on
B.faced with
C.faced about
D.faced up to
(70) A.in general
B.in any term
C.in set terms
D.in terms of
为了推动多媒体会议系统的发展,ITU组织制定了一系列标准,其中(59)系列标准用于LAN,会议。通用视频会议系统中的核心是(60)。
A.H.320
B.H.321
C.H.323
D.H.324
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