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   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%

   2019年上半年
   网络管理员
   上午试卷综合知识

第71题
选择题

Simple Network Management Protocol（SNMP）is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device（71）.SNMP is a component of the Internet Protocol Suite as defined by the Internet（72）Task Force.SNMP operates in the（73）layer of the Internet protocol suite.All SNMP messages are transport..

73%

   2018年下半年
   网络管理员
   上午试卷综合知识

第71题
选择题

In multipoint networks , there are tree persistence methods when a station finds a channel busy.in the 1-persistent method,after the station finds the line idle,it sends its frame immediately.this method has the （71）chance of collision because two or more stations may find the line （72）and send their frames immediately. In the nonpersistent method , a station that has a frame to send （73）the..

68%

   2017年下半年
   网络管理员
   上午试卷综合知识

第71题
选择题

The Hypertext Transfer Protocol , the Web's （71）protocol , is at the heart of the Web. HTTP is implemented in two programs : a（72） program and a server program . The client program and server program, executing on different end systems , talk to each other by（73）HTTP messages . HTTP defines how Web clients request Web pages from servers and how servers transfer web pages to clients . when a ..

55%

   2017年下半年
   网络管理员
   上午试卷综合知识

第45题
选择题

邮箱地址 zhangsan@qq.com中，zhangsan是（45）qq.com是（46）。

29%

   2016年上半年
   网络管理员
   上午试卷综合知识

第15题
选择题

设有一个关系emp-sales（部门号，部门名，商品编号，销售数），查询各部门至少销售了5种商品或者部门总销售数大于2000的部门号、部门名及平均销售数的SQL语句如下：

46%

   2015年下半年
   网络管理员
   上午试卷综合知识

第54题
选择题

RSA通常用作（）。

40%

   2014年上半年
   网络管理员
   上午试卷综合知识

第41题
选择题

在HTML文档中创建一个标记sample，（41）可以创建指向标记sample的超链接。

51%

   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%

   2012年下半年
   网络管理员
   上午试卷综合知识

第71题
选择题

A management domain typically contains a large amount of management information. Each individual item of(71)information is an instance of a managed object type. The definition of a related set of managed(72)types is contained in a Management Information Base (MIB) module. Many such MIB modules are defineD. For each managed object type it describes, a MIB(73)defines not only the semantics and synta..

50%

   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%

   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%

   2010年上半年
   网络管理员
   上午试卷综合知识

第32题
选择题

按照域名系统的定义，域名www.sales.microsoft.com包含4个标识符，其中（32）是顶级域名，（33）是注册给组织或个人的二级域名。

43%

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