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2025年上半年网络工程师考试基础知识真题+答案!

  • 2026-09-17 09:22:17
2025年上半年网络工程师考试基础知识真题+答案!

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以下是2025年上半年网络工程师考试基础知识部分真题+答案!

第1题(单选题):

使用一个C类网络地址为50台主机的局域网进行地址规划,其网络掩码的长度应为()位

A.29

B.27

C.26

D.28

答案:C

第2题(单选题)

将信号分配到不同时隙的复用技术是()。

A.频分复用(FDM)

B.波分复用(WDM)

C.码分复用(CDM)

D.时分复用(TDM)

答案:D

第3题(单选题)

某企业网络管理员在边界防火墙配置ACL策略,加强企业门户网站服务器的安全防护,具体要求如下:

(1)禁止用户访问服务器(172.16.1.2)TCP 80和443端口以外的所有端口

(2)允许内部地址(10.0.10.0/24)通过SSH协议远程登录服务器

下列配置策略和次序可以满足上述要求的是()。

A.1允许任意源地址访问172.16.1.2的TCP80和443端口2禁止源地址10.0.10.0/24访问172.16.1.2的TCP22端口3允许任意地址访问172.16.1.2的任意端口

B.1允许任意源地址访问172.16.1.2的TCP80和443端口2禁止任意地址访问172.16.1.2的任意端口3允许源地址10.0.10.0/24访问172.16.1.2的TCP22端口

C.1允许任意源地址访问172.16.1.2的TCP80和443端口2允许源地址10.0.10.0/24访问172.16.1.2的TCP22端口3禁止任意地址访问172.16.1.2的任意端口

D.1禁止任意源地址访问172.16.1.2的TCP80和443端口2允许源地址10.0.10.0/24访问172.16.1.2的TCP22端口3允许任意地址访问172.16.1.2的任意端口

答案:C

第4题(单选题)

主机感染蠕虫病毒后,下列处置措施不合理的是()。

A.移除移动硬盘、U盘等外设

B.更新病毒库,在线扫描查杀病毒

C.断开网络连接

D.查找可疑进程

答案:B

第5题(单选题)

某园区与ISP运营商建立eBGP邻居,配置完成后,BGP邻居始终无法进入“Established”状态,网络拓扑和路由器配置如下所示

造成故障的原因可能是()

A.as-number与邻居IP不匹配

B.未配置路由宣告

C.BGP配置后未重启进程,配置未生效

D.未配置R1和ISP路由器之间的路由

答案:A

第6题(单选题)

在交换机上配置如下ACL策略,则下列网络中会被阻止的是()。

acl number 2000

rule 5 deny source 123.1.1.0 0.0.6.0

rule 10 permit

A.123.1.4.0

B.123.1.3.0

C.123.1.2.0

D.123.1.6.0

答案:B

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  140. /www/wwwroot/www.sjds.net/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000786s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001034s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000505s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000359s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000584s ]
  6. SELECT * FROM `set` [ RunTime:0.000280s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000715s ]
  8. SELECT * FROM `article` WHERE `id` = 512770 LIMIT 1 [ RunTime:0.000402s ]
  9. UPDATE `article` SET `lasttime` = 1789640026 WHERE `id` = 512770 [ RunTime:0.001484s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000311s ]
  11. SELECT * FROM `article` WHERE `id` < 512770 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000468s ]
  12. SELECT * FROM `article` WHERE `id` > 512770 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000356s ]
  13. SELECT * FROM `article` WHERE `id` < 512770 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000554s ]
  14. SELECT * FROM `article` WHERE `id` < 512770 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000549s ]
  15. SELECT * FROM `article` WHERE `id` < 512770 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000662s ]
0.081819s