| [ |
| { |
| "question": "在Shell 脚本中，用来读取文件内各个域的内容并将其赋值给Shell 变量的命令是 （） 。", |
| "choices": [ |
| "fold", |
| "join", |
| "tr", |
| "read" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-3", |
| "A": "fold", |
| "B": "join", |
| "C": "tr", |
| "D": "read" |
| }, |
| { |
| "question": "退出交互模式的shell，应键入 （） 。", |
| "choices": [ |
| ";", |
| "^q", |
| "exit", |
| "quit" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-4", |
| "A": ";", |
| "B": "^q", |
| "C": "exit", |
| "D": "quit" |
| }, |
| { |
| "question": "下列变量名中有效的shell 变量名是：（）", |
| "choices": [ |
| "-2-time", |
| "_2$3", |
| "trust_no_1", |
| "2004file" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-5", |
| "A": "-2-time", |
| "B": "_2$3", |
| "C": "trust_no_1", |
| "D": "2004file" |
| }, |
| { |
| "question": "是shell 具有的功能和特点的是（）。", |
| "choices": [ |
| "管道", |
| "输入输出重定向", |
| "执行后台进程", |
| "处理程序命令" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-6", |
| "A": "管道", |
| "B": "输入输出重定向", |
| "C": "执行后台进程", |
| "D": "处理程序命令" |
| }, |
| { |
| "question": "下列对shell 变量FRUIT 操作，正确的是：（） 。", |
| "choices": [ |
| "为变量赋值：$FRUIT=apple", |
| "显示变量的值：fruit=apple", |
| "显示变量的值：echo $FRUIT", |
| "判断变量是否有值：[ -f ―$FRUIT‖ ]" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-7", |
| "A": "为变量赋值：$FRUIT=apple", |
| "B": "显示变量的值：fruit=apple", |
| "C": "显示变量的值：echo $FRUIT", |
| "D": "判断变量是否有值：[ -f ―$FRUIT‖ ]" |
| }, |
| { |
| "question": "下面的网络协议中，面向连接的的协议是：()", |
| "choices": [ |
| "传输控制协议", |
| "用户数据报协议", |
| "网际协议", |
| "网际控制报文协议" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-8", |
| "A": "传输控制协议", |
| "B": "用户数据报协议", |
| "C": "网际协议", |
| "D": "网际控制报文协议" |
| }, |
| { |
| "question": "一台主机要实现通过局域网与另一个局域网通信，需要做的工作是 () 。", |
| "choices": [ |
| "配置域名服务器", |
| "定义一条本机指向所在网络的路由", |
| "定义一条本机指向所在网络网关的路由", |
| "定义一条本机指向目标网络网关的路由" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-9", |
| "A": "配置域名服务器", |
| "B": "定义一条本机指向所在网络的路由", |
| "C": "定义一条本机指向所在网络网关的路由", |
| "D": "定义一条本机指向目标网络网关的路由" |
| }, |
| { |
| "question": "在/etc/fstab 文件中指定的文件系统加载参数中，() 参数一般用于CD-ROM 等移动设备。", |
| "choices": [ |
| "defaults", |
| "sw", |
| "rw 和ro", |
| "noauto" |
| ], |
| "A": "defaults", |
| "B": "sw", |
| "C": "rw 和ro", |
| "D": "noauto", |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-10" |
| }, |
| { |
| "question": "终止一个前台进程可能用到的命令和操作 () 。", |
| "choices": [ |
| "kill", |
| ";+C", |
| "shut down", |
| "halt" |
| ], |
| "A": "kill", |
| "B": ";+C", |
| "C": "shut down", |
| "D": "halt", |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-11" |
| }, |
| { |
| "question": "在使用mkdir 命令创建新的目录时，在其父目录不存在时先创建父目录的选项是 ()", |
| "choices": [ |
| "-m", |
| "-d", |
| "-f", |
| "–p" |
| ], |
| "A": "-m", |
| "B": "-d", |
| "C": "-f", |
| "D": "–p", |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-12" |
| }, |
| { |
| "question": "具有很多C 语言的功能，又称过滤器的是 () 。", |
| "choices": [ |
| "csh", |
| "tcsh", |
| "awk", |
| "sed" |
| ], |
| "A": "csh", |
| "B": "tcsh", |
| "C": "awk", |
| "D": "sed", |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-13" |
| }, |
| { |
| "question": "建立动态路由需要用到的文件有 () 。", |
| "choices": [ |
| "/etc/hosts", |
| "/etc/HOSTNAME", |
| "/etc/resolv.conf", |
| "/etc/gateways" |
| ], |
| "A": "/etc/hosts", |
| "B": "/etc/HOSTNAME", |
| "C": "/etc/resolv.conf", |
| "D": "/etc/gateways", |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-14" |
| }, |
| { |
| "question": "局域网的网络地址192.168.1.0/24，局域网络连接其它网络的网关地址是192.168.1.1。主机192.168.1.20 访问172.16.1.0/24 网络时，其路由设置正确的是 () 。", |
| "choices": [ |
| "route add –net 192.168.1.0 gw 192.168.1.1 netmask 255.255.255.0 metric1", |
| "route add –net 172.16.1.0 gw 192.168.1.1 netmask 255.255.255.255 metric1", |
| "route add –net 172.16.1.0 gw 172.16.1.1 netmask 255.255.255.0 metric 1", |
| "route add default 192.168.1.0 netmask 172.168.1.1 metric 1" |
| ], |
| "A": "route add –net 192.168.1.0 gw 192.168.1.1 netmask 255.255.255.0 metric1", |
| "B": "route add –net 172.16.1.0 gw 192.168.1.1 netmask 255.255.255.255 metric1", |
| "C": "route add –net 172.16.1.0 gw 172.16.1.1 netmask 255.255.255.0 metric 1", |
| "D": "route add default 192.168.1.0 netmask 172.168.1.1 metric 1", |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-15" |
| }, |
| { |
| "question": "下列提法中，不属于ifconfig 命令作用范围的是 () 。", |
| "choices": [ |
| "配置本地回环地址", |
| "配置网卡的IP 地址", |
| "激活网络适配器", |
| "加载网卡到内核中" |
| ], |
| "A": "配置本地回环地址", |
| "B": "配置网卡的IP 地址", |
| "C": "激活网络适配器", |
| "D": "加载网卡到内核中", |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-16" |
| }, |
| { |
| "question": "下列关于链接描述，错误的是 () 。", |
| "choices": [ |
| "硬链接就是让链接文件的i 节点号指向被链接文件的i 节点", |
| "硬链接和符号连接都是产生一个新的i 节点", |
| "链接分为硬链接和符号链接", |
| "硬连接不能链接目录文件" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-17", |
| "A": "硬链接就是让链接文件的i 节点号指向被链接文件的i 节点", |
| "B": "硬链接和符号连接都是产生一个新的i 节点", |
| "C": "链接分为硬链接和符号链接", |
| "D": "硬连接不能链接目录文件" |
| }, |
| { |
| "question": "在局域网络内的某台主机用ping 命令测试网络连接时发现网络内部的主机都可以连同，而不能与公网连通，问题可能是 ()。", |
| "choices": [ |
| "主机IP 设置有误", |
| "没有设置连接局域网的网关", |
| "局域网的网关或主机的网关设置有误", |
| "局域网DNS 服务器设置有误" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-18", |
| "A": "主机IP 设置有误", |
| "B": "没有设置连接局域网的网关", |
| "C": "局域网的网关或主机的网关设置有误", |
| "D": "局域网DNS 服务器设置有误" |
| }, |
| { |
| "question": "下列文件中，包含了主机名到IP 地址的映射关系的文件是：() 。", |
| "choices": [ |
| "/etc/HOSTNAME", |
| "/etc/hosts", |
| "/etc/resolv.conf", |
| "/etc/networks" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-19", |
| "A": "/etc/HOSTNAME", |
| "B": "/etc/hosts", |
| "C": "/etc/resolv.conf", |
| "D": "/etc/networks" |
| }, |
| { |
| "question": "不需要编译内核的情况是 () 。", |
| "choices": [ |
| "删除系统不用的设备驱动程序时", |
| "升级内核时", |
| "添加新硬件时", |
| "将网卡激活" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-20", |
| "A": "删除系统不用的设备驱动程序时", |
| "B": "升级内核时", |
| "C": "添加新硬件时", |
| "D": "将网卡激活" |
| }, |
| { |
| "question": "以下聚合函数求数据总和的是( )", |
| "choices": [ |
| "MAX", |
| "SUM", |
| "COUNT", |
| "AVG" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-21", |
| "A": "MAX", |
| "B": "SUM", |
| "C": "COUNT", |
| "D": "AVG" |
| }, |
| { |
| "question": "SELECT语句的完整语法较复杂,但至少包括的部分是( )", |
| "choices": [ |
| "仅SELECT", |
| "SELECT,FROM", |
| "SELECT,GROUP", |
| "SELECT,INTO" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-22", |
| "A": "仅SELECT", |
| "B": "SELECT,FROM", |
| "C": "SELECT,GROUP", |
| "D": "SELECT,INTO" |
| }, |
| { |
| "question": "SQL语句中的条件用以下哪一项来表达( )", |
| "choices": [ |
| "THEN", |
| "WHILE", |
| "WHERE", |
| "IF" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-23", |
| "A": "THEN", |
| "B": "WHILE", |
| "C": "WHERE", |
| "D": "IF" |
| }, |
| { |
| "question": "以下能够删除一列的是( )", |
| "choices": [ |
| "alter table emp remove addcolumn", |
| "alter table emp drop column addcolumn", |
| "alter table emp delete column addcolumn", |
| "alter table emp delete addcolumn" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-24", |
| "A": "alter table emp remove addcolumn", |
| "B": "alter table emp drop column addcolumn", |
| "C": "alter table emp delete column addcolumn", |
| "D": "alter table emp delete addcolumn" |
| }, |
| { |
| "question": "若要撤销数据库中已经存在的表S,可用()。", |
| "choices": [ |
| "DELETE TABLE S", |
| "DELETE S", |
| "DROP S", |
| "DROP TABLE S" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-25", |
| "A": "DELETE TABLE S", |
| "B": "DELETE S", |
| "C": "DROP S", |
| "D": "DROP TABLE S" |
| }, |
| { |
| "question": "查找表结构用以下哪一项( )", |
| "choices": [ |
| "FIND", |
| "SELETE", |
| "ALTER", |
| "DESC" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-26", |
| "A": "FIND", |
| "B": "SELETE", |
| "C": "ALTER", |
| "D": "DESC" |
| }, |
| { |
| "question": "要得到最后一句SELECT查询到的总行数,可以使用的函数是( )", |
| "choices": [ |
| "FOUND_ROWS", |
| "LAST_ROWS", |
| "ROW_COUNT", |
| "LAST_INSERT_ID" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-27", |
| "A": "FOUND_ROWS", |
| "B": "LAST_ROWS", |
| "C": "ROW_COUNT", |
| "D": "LAST_INSERT_ID" |
| }, |
| { |
| "question": "在视图上不能完成的操作是( )", |
| "choices": [ |
| "查询", |
| "在视图上定义新的视图", |
| "更新视图", |
| "在视图上定义新的表" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-28", |
| "A": "查询", |
| "B": "在视图上定义新的视图", |
| "C": "更新视图", |
| "D": "在视图上定义新的表" |
| }, |
| { |
| "question": "UNIQUE惟一索引的作用是( )", |
| "choices": [ |
| "保证各行在该索引上的值都不得重复", |
| "保证各行在该索引上的值不得为NULL", |
| "保证参加惟一索引的各列,不得再参加其他的索引", |
| "保证惟一索引不能被删除" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-29", |
| "A": "保证各行在该索引上的值都不得重复", |
| "B": "保证各行在该索引上的值不得为NULL", |
| "C": "保证参加惟一索引的各列,不得再参加其他的索引", |
| "D": "保证惟一索引不能被删除" |
| }, |
| { |
| "question": "用于将事务处理写到数据库的命令是( )", |
| "choices": [ |
| "insert", |
| "rollback", |
| "commit", |
| "savepoint" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-30", |
| "A": "insert", |
| "B": "rollback", |
| "C": "commit", |
| "D": "savepoint" |
| }, |
| { |
| "question": "查找条件为【】:姓名不是NULL的记录( )", |
| "choices": [ |
| "WHERE NAME ! NULL", |
| "WHERE NAME NOT NULL", |
| "WHERE NAME IS NOT NULL", |
| "WHERE NAME!=NULL" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-31", |
| "A": "WHERE NAME ! NULL", |
| "B": "WHERE NAME NOT NULL", |
| "C": "WHERE NAME IS NOT NULL", |
| "D": "WHERE NAME!=NULL" |
| }, |
| { |
| "question": "在视图上不能完成的操作是( )", |
| "choices": [ |
| "更新视图数据", |
| "在视图上定义新的基本表", |
| "在视图上定义新的视图", |
| "查询" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-32", |
| "A": "更新视图数据", |
| "B": "在视图上定义新的基本表", |
| "C": "在视图上定义新的视图", |
| "D": "查询" |
| }, |
| { |
| "question": "在SQL语言中,子查询是()。", |
| "choices": [ |
| "选取单表中字段子集的查询语句", |
| "选取多表中字段子集的查询语句", |
| "返回单表中数据子集的查询语言", |
| "嵌入到另一个查询语句之中的查询语句" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-33", |
| "A": "选取单表中字段子集的查询语句", |
| "B": "选取多表中字段子集的查询语句", |
| "C": "返回单表中数据子集的查询语言", |
| "D": "嵌入到另一个查询语句之中的查询语句" |
| }, |
| { |
| "question": "向数据表中插入一条记录用以下哪一项( )", |
| "choices": [ |
| "CREATE", |
| "INSERT", |
| "SAVE", |
| "UPDATE" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-34", |
| "A": "CREATE", |
| "B": "INSERT", |
| "C": "SAVE", |
| "D": "UPDATE" |
| }, |
| { |
| "question": "SQL语言的数据操纵语句包括SELECT、INSERT、UPDATE、DELETE等。其中最重要的,也是使用最频繁的语句是( )。", |
| "choices": [ |
| "UPDATE", |
| "SELECT", |
| "DELETE", |
| "INSERT" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-35", |
| "A": "UPDATE", |
| "B": "SELECT", |
| "C": "DELETE", |
| "D": "INSERT" |
| }, |
| { |
| "question": "以下哪种操作能够实现实体完整性( )", |
| "choices": [ |
| "设置唯一键", |
| "设置外键", |
| "减少数据冗余", |
| "设置主键" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-36", |
| "A": "设置唯一键", |
| "B": "设置外键", |
| "C": "减少数据冗余", |
| "D": "设置主键" |
| }, |
| { |
| "question": "SQL语言中,删除一个视图的命令是( )", |
| "choices": [ |
| "REMOVE", |
| "CLEAR", |
| "DELETE", |
| "DROP" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-37", |
| "A": "REMOVE", |
| "B": "CLEAR", |
| "C": "DELETE", |
| "D": "DROP" |
| }, |
| { |
| "question": "修改数据库表结构用以下哪一项( )", |
| "choices": [ |
| "UPDATE", |
| "CREATE", |
| "UPDATED", |
| "ALTER" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-38", |
| "A": "UPDATE", |
| "B": "CREATE", |
| "C": "UPDATED", |
| "D": "ALTER" |
| }, |
| { |
| "question": "以下语句错误的是( )", |
| "choices": [ |
| "select sal+1 from emp;", |
| "select sal*10,sal*deptno from emp;", |
| "不能使用运算符号", |
| "select sal*10,deptno*10 from emp;" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-39", |
| "A": "select sal+1 from emp;", |
| "B": "select sal*10,sal*deptno from emp;", |
| "C": "不能使用运算符号", |
| "D": "select sal*10,deptno*10 from emp;" |
| }, |
| { |
| "question": "若用如下的SQL语句创建了一个表SC:( )CREATE TABLE SC (S# CHAR(6)NOT NULL,C# CHAR(3)NOT NULL,SCORE INTEGER, NOTE CHAR(20));向SC表插入如下行时,()行可以被插入。", |
| "choices": [ |
| "(NULL,’103’,80,’选修’)", |
| "(’200823’,’101’,NULL,NULL)", |
| "(’201132’,NULL,86,’’)", |
| "(’201009’,’111’,60,必修)" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-40", |
| "A": "(NULL,’103’,80,’选修’)", |
| "B": "(’200823’,’101’,NULL,NULL)", |
| "C": "(’201132’,NULL,86,’’)", |
| "D": "(’201009’,’111’,60,必修)" |
| }, |
| { |
| "question": "删除用户账号命令是( )", |
| "choices": [ |
| "DROP USER", |
| "DROP TABLE USER", |
| "DELETE USER", |
| "DELETE FROM USER" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-41", |
| "A": "DROP USER", |
| "B": "DROP TABLE USER", |
| "C": "DELETE USER", |
| "D": "DELETE FROM USER" |
| }, |
| { |
| "question": "敏捷团队日常运作中，迭代评审会议是为了？", |
| "choices": [ |
| "团队自身监视，创建下个sprint改进计划机会", |
| "确认系统功能与用户期望是否一致，收集用户反馈，明确后续目标", |
| "帮助团队自组织自改进", |
| "团队之间更透明，加强信任" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-42", |
| "A": "团队自身监视，创建下个sprint改进计划机会", |
| "B": "确认系统功能与用户期望是否一致，收集用户反馈，明确后续目标", |
| "C": "帮助团队自组织自改进", |
| "D": "团队之间更透明，加强信任" |
| }, |
| { |
| "question": "6.外观设计专利是指()", |
| "choices": [ |
| "对产品的整体或者局部的形状、图案或者其结合以及色彩与形状、图案的结合所作出的富有美感并适于工业应用的新设计。", |
| "对产品、方法或者其改进所提出的新的技术方案。", |
| "对产品的形状、构造或者其结合所提出的适于实用的新的技术方案，", |
| "科学发现" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-43", |
| "A": "对产品的整体或者局部的形状、图案或者其结合以及色彩与形状、图案的结合所作出的富有美感并适于工业应用的新设计。", |
| "B": "对产品、方法或者其改进所提出的新的技术方案。", |
| "C": "对产品的形状、构造或者其结合所提出的适于实用的新的技术方案，", |
| "D": "科学发现" |
| }, |
| { |
| "question": "为了防范XSS攻击，需要在数据输出之前先对敏感字符进行()，能够避免跨站脚本漏洞，是防止XSS的首推之选", |
| "choices": [ |
| "删除", |
| "替换", |
| "注释", |
| "转义" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-44", |
| "A": "删除", |
| "B": "替换", |
| "C": "注释", |
| "D": "转义" |
| }, |
| { |
| "question": "出现业务逻辑漏洞的原因有哪些?", |
| "choices": [ |
| "服务器对客户端的业务缺乏一致性验证", |
| "通信过程中末进行数据保护", |
| "很多业务作的参数是从客户端获取的", |
| "全部都是" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-45", |
| "A": "服务器对客户端的业务缺乏一致性验证", |
| "B": "通信过程中末进行数据保护", |
| "C": "很多业务作的参数是从客户端获取的", |
| "D": "全部都是" |
| }, |
| { |
| "question": "DDoS攻击亦称洪水攻击，是一种网络攻击手法，其攻击方式可以具体分成两种形式( )以及资源消耗型", |
| "choices": [ |
| "服务消耗型", |
| "延迟消耗型", |
| "传输消耗型", |
| "带宽消耗型" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-46", |
| "A": "服务消耗型", |
| "B": "延迟消耗型", |
| "C": "传输消耗型", |
| "D": "带宽消耗型" |
| }, |
| { |
| "question": "以下关于敏捷教练(ScrumMaster)的描述，错误的是", |
| "choices": [ |
| "保护团队不受外界因素的干扰", |
| "研发过程中，同时担任产品负责人(ProductOwner)职责", |
| "保证各个不同角色之间的良好协作，消除障碍", |
| "保证Scrum团队可以道守Scrum的价值，实践和规范" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-47", |
| "A": "保护团队不受外界因素的干扰", |
| "B": "研发过程中，同时担任产品负责人(ProductOwner)职责", |
| "C": "保证各个不同角色之间的良好协作，消除障碍", |
| "D": "保证Scrum团队可以道守Scrum的价值，实践和规范" |
| }, |
| { |
| "question": "Devops价值不包括", |
| "choices": [ |
| "可以使原本预立的开发、测试和运维等角色更好地协作", |
| "提供统一的运行框架和开发工具支持", |
| "缩短开发周期", |
| "提高部雷频率和发布可靠度" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-48", |
| "A": "可以使原本预立的开发、测试和运维等角色更好地协作", |
| "B": "提供统一的运行框架和开发工具支持", |
| "C": "缩短开发周期", |
| "D": "提高部雷频率和发布可靠度" |
| }, |
| { |
| "question": "编码阶段输出不包括以下哪一项", |
| "choices": [ |
| "代码评审报告", |
| "概要设计说明书洋细设计说明书", |
| "源代码", |
| "单元测过案例" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-49", |
| "A": "代码评审报告", |
| "B": "概要设计说明书洋细设计说明书", |
| "C": "源代码", |
| "D": "单元测过案例" |
| }, |
| { |
| "question": "在以太网中 ARP 报文分为 ARP Request 和 ARP Response，其中 ARP Request 在网络是（ ）传送", |
| "choices": [ |
| "广播", |
| "单播", |
| "组播", |
| "多播" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-51", |
| "A": "广播", |
| "B": "单播", |
| "C": "组播", |
| "D": "多播" |
| }, |
| { |
| "question": "在一台 IP 地址为 192.168.0.2 的计算机上 Ping 192.168.0.1 -l 10，那么在 192.168.0.1 这台计算机上收到的 IP 报文长度是（ ）", |
| "choices": [ |
| "10byte", |
| "38byte", |
| "64byte", |
| "56byte" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-52", |
| "A": "10byte", |
| "B": "38byte", |
| "C": "64byte", |
| "D": "56byte" |
| }, |
| { |
| "question": "下面协议中那一个是工作在传输层并且是面向无连接的。", |
| "choices": [ |
| "IP", |
| "ARP", |
| "TCP", |
| "UDP" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-53", |
| "A": "IP", |
| "B": "ARP", |
| "C": "TCP", |
| "D": "UDP" |
| }, |
| { |
| "question": "下面哪个协议用于发现设备的硬件地址？", |
| "choices": [ |
| "RARP", |
| "ARP", |
| "IP", |
| "ICMP", |
| "BootP" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-54", |
| "A": "RARP", |
| "B": "ARP", |
| "C": "IP", |
| "D": "ICMP", |
| "E": "BootP" |
| }, |
| { |
| "question": "10.254.255.19/255.255.255.248 的广播地址是什么?", |
| "choices": [ |
| "10.254.255.23", |
| "10.254.255.24", |
| "10.254.255.255", |
| "10.255.255.255" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-55", |
| "A": "10.254.255.23", |
| "B": "10.254.255.24", |
| "C": "10.254.255.255", |
| "D": "10.255.255.255" |
| }, |
| { |
| "question": "下面那一个 TCP/UDP 端口范围将被客户端程序使用?", |
| "choices": [ |
| "1–1023", |
| "1024 and above", |
| "1–256", |
| "1–65534" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-56", |
| "A": "1–1023", |
| "B": "1024 and above", |
| "C": "1–256", |
| "D": "1–65534" |
| }, |
| { |
| "question": "哪些端口是 well-known port？", |
| "choices": [ |
| "1–1023", |
| "1024 and above", |
| "1–256", |
| "1–65534" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-57", |
| "A": "1–1023", |
| "B": "1024 and above", |
| "C": "1–256", |
| "D": "1–65534" |
| }, |
| { |
| "question": "地址 127.0.0.1 表示什么?", |
| "choices": [ |
| "本地 broadcast", |
| "直接 multicast", |
| "本地 network", |
| "本地 loopback" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-58", |
| "A": "本地 broadcast", |
| "B": "直接 multicast", |
| "C": "本地 network", |
| "D": "本地 loopback" |
| }, |
| { |
| "question": "将 172.16.100.0/24 和 172.16.106.0/24 地址聚合应该选择那种表达方式。", |
| "choices": [ |
| "172.16.0.0/24", |
| "172.16.100.0/20", |
| "172.16.106.0/20", |
| "172.16.96.0/20" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-59", |
| "A": "172.16.0.0/24", |
| "B": "172.16.100.0/20", |
| "C": "172.16.106.0/20", |
| "D": "172.16.96.0/20" |
| }, |
| { |
| "question": "IP 报文头中固定长度部分为多少字节？ 正确的选项是", |
| "choices": [ |
| "10", |
| "20", |
| "30", |
| "40" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-60", |
| "A": "10", |
| "B": "20", |
| "C": "30", |
| "D": "40" |
| }, |
| { |
| "question": "TCP/IP协议中，基于TCP协议的应用程序包括", |
| "choices": [ |
| "ICMP", |
| "SMTP", |
| "RIP", |
| "SNMP" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-61", |
| "A": "ICMP", |
| "B": "SMTP", |
| "C": "RIP", |
| "D": "SNMP" |
| }, |
| { |
| "question": "PING 命令使用了哪种ICMP？ 正确的选项是 。", |
| "choices": [ |
| "Redirect", |
| "Source quench", |
| "Echo reply", |
| "Destination unreachable" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-62", |
| "A": "Redirect", |
| "B": "Source quench", |
| "C": "Echo reply", |
| "D": "Destination unreachable" |
| }, |
| { |
| "question": "当今世界上最流行的TCP/IP协议的层次并不是按OSI参考模型来划分的，相对应于OSI 的七层网络模型，没有定义 。", |
| "choices": [ |
| "物理层与链路层", |
| "链路层与网络层", |
| "网络层与传输层", |
| "会话层与表示层" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-63", |
| "A": "物理层与链路层", |
| "B": "链路层与网络层", |
| "C": "网络层与传输层", |
| "D": "会话层与表示层" |
| }, |
| { |
| "question": "一个IP报文在路由器中经过一番处理之后，TTL字段值变为0，这时（ ）", |
| "choices": [ |
| "路由器向IP报文的源地址发送一个ICMP错误信息，并继续转发该报文", |
| "路由器向IP报文的源地址发送一个ICMP错误信息，并停止转发该报文", |
| "路由器继续转发报文，不发送错误信息", |
| "路由器直接丢弃该IP报文，既不转发，也不发送错误信息", |
| "以上四种说法都不完全正确，要视具体情况而定" |
| ], |
| "answer": "", |
| "solution": "", |
| "id": "pufa-64", |
| "A": "路由器向IP报文的源地址发送一个ICMP错误信息，并继续转发该报文", |
| "B": "路由器向IP报文的源地址发送一个ICMP错误信息，并停止转发该报文", |
| "C": "路由器继续转发报文，不发送错误信息", |
| "D": "路由器直接丢弃该IP报文，既不转发，也不发送错误信息", |
| "E": "以上四种说法都不完全正确，要视具体情况而定" |
| }, |
| { |
| "question": "TCP/IP协议中，基于TCP协议的应用程序包括", |
| "choices": [ |
| "ICMP", |
| "SMTP", |
| "RIP", |
| "SNMP" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-65", |
| "A": "ICMP", |
| "B": "SMTP", |
| "C": "RIP", |
| "D": "SNMP" |
| }, |
| { |
| "question": "国际上负责分配IP地址的专业组织划分了几个网段作为私有网段，可以供人们在私有网络上自由分配使用，以下不属于私有地址的网段是", |
| "choices": [ |
| "10.0.0.0/8", |
| "172.16.0.0/12", |
| "192.168.0.0/16", |
| "224.0.0.0/8" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-66", |
| "A": "10.0.0.0/8", |
| "B": "172.16.0.0/12", |
| "C": "192.168.0.0/16", |
| "D": "224.0.0.0/8" |
| }, |
| { |
| "question": "在一个子网掩码为255.255.240.0 的网络中，（ ）不是合法的主机地址。", |
| "choices": [ |
| "150.150.37.2", |
| "150.150.16.2", |
| "150.150.8.12", |
| "150.150.47.255" |
| ], |
| "answer": "D", |
| "solution": "", |
| "id": "pufa-67", |
| "A": "150.150.37.2", |
| "B": "150.150.16.2", |
| "C": "150.150.8.12", |
| "D": "150.150.47.255" |
| }, |
| { |
| "question": "172.16.10.32/255.255.255.224代表的是（ ）地址。", |
| "choices": [ |
| "主机", |
| "网络", |
| "组播", |
| "广播" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-68", |
| "A": "主机", |
| "B": "网络", |
| "C": "组播", |
| "D": "广播" |
| }, |
| { |
| "question": "IPV6地址长度为（ ）Bits。", |
| "choices": [ |
| "32", |
| "64", |
| "128", |
| "256" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-69", |
| "A": "32", |
| "B": "64", |
| "C": "128", |
| "D": "256" |
| }, |
| { |
| "question": "TCP协议通过（ ）来区分不同的连接。", |
| "choices": [ |
| "IP地址", |
| "端口号", |
| "IP地址+端口号", |
| "MAC地址" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-70", |
| "A": "IP地址", |
| "B": "端口号", |
| "C": "IP地址+端口号", |
| "D": "MAC地址" |
| }, |
| { |
| "question": "在IP协议的报文头中2字节的IP protocol type表示了IP数据报文携带的内容，代表UDP报文的数值是（ ）。", |
| "choices": [ |
| "6", |
| "17", |
| "20", |
| "89" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-71", |
| "A": "6", |
| "B": "17", |
| "C": "20", |
| "D": "89" |
| }, |
| { |
| "question": "在IP协议数据报文中，标志字段的最低位如果为1表示后面还有分片的数据报，该标志字段的最低位是（ ）。", |
| "choices": [ |
| "CF", |
| "MF", |
| "DF", |
| "TTL" |
| ], |
| "answer": "B", |
| "solution": "", |
| "id": "pufa-72", |
| "A": "CF", |
| "B": "MF", |
| "C": "DF", |
| "D": "TTL" |
| }, |
| { |
| "question": "TRACERT过程中，一定不会用到的协议是（ ）。", |
| "choices": [ |
| "ICMP", |
| "ARP", |
| "TCP", |
| "UDP" |
| ], |
| "answer": "C", |
| "solution": "", |
| "id": "pufa-73", |
| "A": "ICMP", |
| "B": "ARP", |
| "C": "TCP", |
| "D": "UDP" |
| }, |
| { |
| "question": "IP 报文中一部分字段专门用来描述报文的生命周期，即 TTL 值，它的最大值是( )。", |
| "choices": [ |
| "255", |
| "256", |
| "63", |
| "6" |
| ], |
| "answer": "A", |
| "solution": "", |
| "id": "pufa-74", |
| "A": "255", |
| "B": "256", |
| "C": "63", |
| "D": "6" |
| } |
| ] |
