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   2020年下半年
   网络工程师
   上午试卷综合知识

第71题
选择题

The Address Resolution Protocol(ARP)was developed to enable communication on an Internetwork and perform a required function in IP routing.ARP lies between layers（71）of the OSI model,and allows computers to introduce each other across a network prior to communication.APR finds the（72 ）address of a host from its known（73 ）address.Before a device sends a datagram to another device,it looks in ..

53%

   2019年上半年
   网络工程师
   上午试卷综合知识

第71题
选择题

Network security consists of policies and practices to prevent and monitor（71）access,misuse, modification, or denial of a computer network and network-accessible resources.Network security involves the authorization of access to data in a network, which is controlled by the network（72）.Users choose or are assigned an ID and password or other authenticating information that allows them to acces..

44%

   2018年下半年
   网络工程师
   上午试卷综合知识

第71题
选择题

The TTL field was originally designed to hold a time stamp, which was decremented by each visited router.The datagram was (71) when the value became zero.However, for this scheme, all the machines must have synchronized clocks and must know how long it takes for a datagram to go from one machine to another.Today, this field is used mostly to control the (72) number of hops (routers) visited by the..

53%

   2018年上半年
   网络工程师
   上午试卷综合知识

第71题
选择题

With circuit switching, a （71）path is established between two stations for communication . Switching and transmission resources within the network are （72）for the exclusive use of the circuit for the duration of the connection . The connection is（73）：Once it is established ，it appears to attached devices as if there were a direct connection. Packet switching was designed to provide a more ..

57%

   2016年下半年
   网络工程师
   上午试卷综合知识

第57题
选择题

把路由器当前配置文件存储到NVRAM中的命令是（57）。

61%

   2015年下半年
   网络工程师
   上午试卷综合知识

第71题
选择题

The Dynamic Host Configuration Protocol provides configuration parameters to Internet （71）. DHCP consists of two components: a （72） for delivering host-specific configuration parameters from a DHCP server to a host and a mechanism for allocation of network addresses to hosts. DHCP is built on a client-server model, where designated DHCP server hosts allocate network addresses and deliver..

48%

   2013年下半年
   网络工程师
   上午试卷综合知识

第71题
选择题

The de facto standard Application Program Interface (API) for TCP/IP applications is the ”sockets” interface. Although this API was developed for (71) in the early 1980s it has also been implemented on a wide variety of non-Unix systems. TCP/IP (72) written using the sockets API have in the past enjoyed a high degree of portability and we would like the same (73) with IPv6 applications..

56%

   2012年上半年
   网络工程师
   上午试卷综合知识

第71题
选择题

The TCP protocol is a (71) layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides of the globe. In other words, each connection creates a (72) with a length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting a fix..

56%

   2011年下半年
   网络工程师
   上午试卷综合知识

第8题
选择题

若某文件系统的目录结构如下图所示，假设用户要访问文件f1.java,且当前工作目录为Program，则该文件的全文件名为(8),其相对路径为(9)。

21%

   2010年上半年
   网络工程师
   上午试卷综合知识

第61题
选择题

千兆以太网标准802.3z定义了一种帧突发方式（frame bursting),这种方式是指(61)。

42%

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