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关键词:
IO
OS
C
L
T
操作系统
路由
路由器
特权模式
C
操作系统
L
路由
路由器
T
特权模式
隶属试卷
题号
题干
难度系数/错误率
2021年下半年
网络管理员
上午试卷
综合知识
第71题
选择题
In telecommunications, 5G is the(71)generation technology standard for broadband cellular networks.5G networks are(72)cellular networks,for which the service area is divided into small geographical cells.All 5C(73)devices in a cell are connected to the Internet and telephone network by radio waves.The main advantage of the new networks is that they will have greater bandwidth, giving higher d..
69%
2021年上半年
网络管理员
上午试卷
综合知识
第71题
选择题
The Address Resolution Protocol (ARP) is developed to enable communications on an internetwork and performs a required function in IProuting. ARPlies in the(71)layer of the TCP/IP model, and allows computers to introduce each other across a network prior to communication. ARP finds the(72)address ofa host from its known(73)address.Before a device sends a datagram to another deviceit looks in ..
83%
2020年下半年
网络管理员
上午试卷
综合知识
第71题
选择题
Network Address (71) (NAT) is the process where a network device assigns a public address to a computer (or group of computers) inside a private network. The main use of NAT is to limit the number of public IP addresses that an organization or company must use, for both economy and (72) purposes. When a packet traverses outside the local network, MAT converts the private IP address to a public IP ..
54%
2019年下半年
网络管理员
上午试卷
综合知识
第71题
选择题
ICMP is short for Internet (71) Message Protocol, and is an integral part of the Internet (72) suite (commonly referred to as TCP/IP). It is a (73) layer protocol used by network devices to diagnose network communication issues. IP is not designed to be absolutely reliable. ICMP is to provide feedback about problems in the communication environment, not to make IP (74).One of the most well-known a..
56%
2016年下半年
网络管理员
上午试卷
综合知识
第71题
选择题
The Internet is based on a connectionless end-to-end packet service, which traditionally provided best-effort means of data (71)using the Transmission Control Protocol/Internet Protocol Suite. Although the (72)design gives the Internet its flexibility and robustness, its packet dynamics also make it prone to congestion problems,especially at (73)that connect networks of widely different band..
52%
2016年下半年
网络管理员
上午试卷
综合知识
第58题
选择题
某网络拓扑结构如下:
则host1可能的IP地址为(58),路由器R1的S2/0口的IP地址为(59)。
55%
2015年下半年
网络管理员
上午试卷
综合知识
第71题
选择题
VPN connections allow users working at home or on the road to connect in a secure fashion to a (71) corporate server using the routing infrastructure provided by a public internetwork (such as the Internet). From the user's perspective, the VPN connection is a point-to-point connection between the user's computer and a corporate (72). The nature of the (73) internetwork is irrelevant to the ..
72%
2013年下半年
网络管理员
上午试卷
综合知识
第71题
选择题
OS
PF is a link-state routing protocol. It is designed to be run internal to a single (71) system. Each
OS
PF router maintains an identical (72) describing the autonomous system's topology. From this database, a routing table is calculated by constructing a shortest-path (73) .
OS
PF recalculates routes quickly in the face of topological changes, utilizing a minimum of routing (74) traffic.
OS
PF prov..
58%
2013年上半年
网络管理员
上午试卷
综合知识
第71题
选择题
Traditional network layer packet forwarding relies on the information provided by network layer(71)protocols, or static routing, to make an independent(72)decision at each hop within the network. The forwarding(73)is based solely on the destination(74)IP address. All packets for the same destination follow the same path across the network if no other equal-cost paths exist. Whenever a router has t..
48%
2013年上半年
网络管理员
上午试卷
综合知识
第36题
选择题
如果登录进入路由器操作系统
IO
S,下面哪个提示符表示特权模式?(36)。
33%
2012年上半年
网络管理员
上午试卷
综合知识
第71题
选择题
We have already covered the topic of network addresses. The first (71) in a block (in classes A, B, and C) defines the network address. In classes A, B, and C, if the hostid is all Is, the address is called a direct broadcast address. It is used by a (72) to send a packet to all hosts in a specific network. All hosts will accept a packet having this type of destination address. Note that this addr..
52%
2012年上半年
网络管理员
上午试卷
综合知识
第38题
选择题
在
OS
I/RM中,主要提供差错控制的协议层是(38),负责路由选择的协议层是(39),解释应用数据语义的协议层是(40)。
39%
2011年下半年
网络管理员
上午试卷
综合知识
第71题
选择题
One of the main resposibilities of ICMP is to report(71). Although technology has produced increasingly relaible transmission media, errors still exist and must be handled. IP is an(72)protocol. This means that error checking and error control are not a concern of IP. ICMP was designed, in part, to compensate for this shortcoming. Howerver, ICMP does not(73)errors, it simply report them. Error cor..
61%
2009年下半年
网络管理员
上午试卷
综合知识
第71题
选择题
For(71)service,we need a virtual-circuit subnet.Let us see how that works.The idea behind virtual circuits is to avoid having to choose a new(72)for every packet sent.Instead, when a connection is established,a route from the(73)machine to the destination machine is chosen as part of the connection setup and stored in tables inside the(74).That route is used for all traffic flowing over the connec..
52%
2009年下半年
网络管理员
上午试卷
综合知识
第40题
选择题
在Windows的D
OS
窗口中键入命令
这个命令序列的作用是(40)。
36%
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