2024年全国软件水平考试之初级网络管理员考试热门考点卷（详细参考解析）.docx

姓名 :_________________编号 :_________________地区 :_________________省市 :_________________ 密封线 密封线 全国软件水平考试考试重点试题精编注意事项:1.全卷采用机器阅卷，请考生注意书写规范；考试时间为120分钟2.在作答前，考生请将自己的学校、姓名、班级、准考证号涂写在试卷和答题卡规定位置 3.部分必须使用2B铅笔填涂;非选择题部分必须使用黑色签字笔书写，字体工整，笔迹清楚 4.请按照题号在答题卡上与题目对应的答题区域内规范作答，超出答题区域书写的答案无效:在草稿纸、试卷上答题无效参考答案和详细解析均在试卷末尾)一、选择题1、在DHCP服务器配置过程中，下列配置合理的是（） A.移动用户配置较长的租约期 B.固定用户配置较短的租约期 C.本地网关配置较长的租约期 D.服务器采用保留地址 2、在局域网中划分VLAN，不同VLAN之间必须通过（ ）才能互相通信属于各个VLAN的数据帧必须打上不同的（ ） A.VLAN优先级 B.VIAN标记 C.用户标识 D.用户密钥 3、若要获取某个域的邮件服务器地址，则查询该域的（ ）记录。

A.CNAME B.MX C.NS D.A 4、在局域网中划分VLAN，不同VLAN之间必须通过（ ）才能互相通信属于各个VLAN的数据帧必须打上不同的（ ） A.中继端口 B.动态端口 C.接入端口 D.静态端口 5、CPU执行指令时，指向下一条要执行的指令的（ ） A.地址寄存器 B.通用寄存器 C.累加器 D.程序计数器 6、OSPF is a link-state routing protocolIt is designed to be run internal to a single （71）systemEach OSPF router maintains an identical （）describing the autonomous system’s topologyFrom this database，a routing table is calculated by constructing a shortest-path （）OSPF recalculates routes quickly in the face of topological changes，utilizing a minimum of routing （） traffic。

OSPF provides support for equal-cost multipathAn area routing capability is provided，enabling an additional level of routing protection and a reduction in routing protocol （） A.autonomous B.network C.computer D.server 7、在缺省用户目录下创建一个新用户alex的Linux命令是（） A.useradD. -d/home/alex alex B.useradD. -d/usr/alex alex C.userad D.-D/usr/alex alex 8、Linux不支持（ ）文件系统 A.NTFS B.SWAP C.EXT2 D.EXT3 9、设信号的波特率为600Baud，采用幅度一相位复合调制技术，由2种幅度和8种相位组成16种码元，则信道的数据速率为（ ） A.600 b/s B.2400 b/s C.4800 b/s D.9600 b/s 10、One of the main resposibilities of ICMP is to report （ ）. Although technology has produced increasingly reliable transmission media, errors still exist and must be handled. IP is an （ ）protocol. This means that error checking and error control are not a concem ofIP.ICMP was designed, in part, to compensate for this shortcoming. Howerver, ICMP does not （ ）errors, it simply reports them. Error correction is left to the higher-level potocols. Error messages are always sent to the original（ ）because the only information available in the datagram about the route is the source and destination lP addresses. ICMP uses the source IP address to send the error massage to the source ofthe （ ）. A.correct B.conduct C.produce D.connect 11、IPv4分组首部中第一个字段为（ ）。

A.版本号 B.Internet首部长度 C.TTL D.总长度 12、在Windows操作系统中，下列命令中可以显示本地网卡中的物理地址（MAC）的是（）；本地计算机用于与DHCP服务器取得联系，并租用一个IP地址的命令是（） A.ipconfig B.ipconfig/all C.ipconfig/release D.ipconfig/renew 13、The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer （ ） between a client and server on a computer network.FTP is built on a （请作答此空） model architecture using separate control and data connections between the client and the server. FTP users may authenticate themselves with a （ ） sign-in protocol, normally in the form of a username and password, but can connect anonymously if the server is configured to allow it. For secure transmission that protects the username and password, and encrypts the content, FTP is often secured with SSL/TLS (FTPS) or replaced with SSH File Transfer Protocol (SFTP).The first FTP client applications were （ ） programs developed before operating systems had graphical user interfaces, and are still shipped with most Windows, Unix, and Linux operating systems. Many FTP clients and automation utilities have since been developed for desktops, servers, mobile devices, and hardware, and FTP has been incorporated into productivity applications, such as HTML editors.FTP may run in （ ） mode, which determines how the data connection is established. In both cases, the client creates a TCP control connection from a random, usually an unprivileged, port N to the FTP server command port 21.In active mode, the client starts listening for incoming data connections from the server on port M. It sends the FTP command PORT M to inform the server on which port it is listening. The server then initiates a data channel to the client from its port 20, the FTP server data port.In situations where the client is behind a firewall and unable to accept incoming TCP connections, passive mode may be used. In this mode, the client uses the control connection to send a PASV command to the server and then receives a server IP address and server port number from the server, which the client then uses to open a data connection from an arbitrary client port to the server IP address and server port number received.Both modes were updated in September 1998 to support IPv6. Further changes were introduced to the passive mode at that time, updating it to extended passive mode. A.browser-server B.user- server C.client-server D.business -customer 14、2009年发布的（ ）标准可以将WLAN的传输速率由54Mb/s提高到300～600Mb/s。