問題詳情
39 在一台主机上涌浏览器无法访问到域名为www.abc.edu.cn的网站，并且在这台主机上执行tracert命令时有如下信息Tracing route to www.abc. edu.cn[202.113.96.10]Over maximum of 30 hops:1 <1ms <1ms <1ms 59.67.148.12 59.67.148.1 reports:Destination net unreachable Trace complete 分析以上信息，会造成这种现象的原因是
(A) 该计算机IP地址设置有误
(B) 相关路由器上进行了访问控制
(C) 该计算机没有正确设置DNS服务器
(D) 该计算机设置的DNS服务器工作不正常
(A) 该计算机IP地址设置有误
(B) 相关路由器上进行了访问控制
(C) 该计算机没有正确设置DNS服务器
(D) 该计算机设置的DNS服务器工作不正常
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- If we _______ now to protect the environment, we'll live to regret it.(A)hadn't acted
- There's no way of knowing why one man makes an important discovery _______ another man, als
- 29 下列关于Windows2003系统下DHCP服务器参数的描述中，错误的是(A) 作用域是网络上IP地址的连续范围(B) 排除是从作用域内排除的有限IP地址序列(C) 保留不可以使用被排出的IP地
- 38 下列关于漏洞扫描技术和工具的描述中，错误的是(A) 主动扫描工作方式类似于IDS(B) CVE为每个漏洞确定了唯一的名称和标准化的描述(C) X-Scanner采用多线程方式对指定IP地址段进行
- 20将Catalyst 6500交换机的设备管理地址设置为2019/24,缺省网关的IP地址为2011，正确的配置语句是(A)set interface vlan1 2
- Try not to cough more than you can _______ since it may cause problems to your lungs.(A)check (B
- India attained _______ independence in 1947, after _______ long struggle.(A)不填; a (B) the; a (C)
- 28 下列关于Windows2003系统下DNS服务器参数的描述中，错误的是(A) 安装DNS服务时，根服务器被自动加入到系统中(B) 反向查找区域用于将IP地址解析为域名(C) 主机记录的TTL是该
- 37 Cisco路由器上使用团体字pub向管理站pub.abc.edu.cn发送自陷消息，正确的snmp配置语句是(A) snmp-server enable traps snmp-server
- 19在Cisco Catalyst 3548以太网交换机上建立一个名为lib105的VLAN，正确的配置是(A) Switch-3548#vlan 1 name lib Switch-354
內容推薦
- "You can't judge a book by its cover," _______.(A)as the saying goes old (B) goes
- 40 攻击者使用无效IP地址，利用TCP连接的三次握手过程，连续发送会话请求，使受害主机处于开放会话的请求之中，直至连接超时，最终因耗尽资源而停止响应。这种攻击被称为(A) DNS欺骗攻击 (B)DD
- 下列关于Serv_U FTP服务器配置的描述中，错误的是(A) 配置服务器域名时，可以使用域名或其它描述(B) 配置服务器IP地址时，服务器有多个IP地址需分别添加(C) 配置服务器域端口号时，
- It was a real race _______ time to get the project done. Luckily, we made it.(A)over (B) by (C)f
- Police have found _______ appears to be the lost ancient statue.(A)which (B) where (C)how (D)wha
- 1意思的轉達及瞭解，稱(A)溝通(B)訊息(C)認知(D)了解
- 17．ab是长为l的均匀带电细杆，PP2是位于ab所在直线上的两点，位置如图所示。 ab上电荷产生的静电场在P1处的场强大小为E1，在P2处的场强大小为F2。则以下说法正确的是 (A)两处的电场方
- When I first met (B)yan I didn't like him, but I _______ my mind.(A)have changed (B) change
- The sunlight is white and blinding, _______ hard-edged shadows on the ground.(A)throwing (B) bei
- I went to a group activity, “Sensitivity Sunday”, which was to make us more 36 the problems faced by
- What can we learn about the author?(A)She rarely misses a good deal.(B) She seldom makes a c
- What is the author’s attitude to 58% of readers?(A)Favorable.(B) Uncaring(C)Doubtful(D)Frien
- What does the author do?(A)She's a teacher.(B) She's a housewife.(C)She's a m
- 1)系统软件一般包括Ⅰ.服务性程序 Ⅱ.语言处理程序Ⅲ.操作系统 Ⅳ.数据库管理系统 (A) Ⅰ、Ⅱ和Ⅲ (B) Ⅰ、Ⅲ和Ⅳ (C) Ⅱ、Ⅲ和Ⅳ (D) 全部
- What does the author want to tell us?(A)How to expose bad tricks.(B) How to reserve airline
- DThe National GalleryDescription:The National Gallery is the (B)itish national art museum built on t
- 下列讀音何組正確?(A)『否』定 / 『否』極泰來(B)彷『彿』/『拂』袖(C)容『易』/血『液』(D)『卅』年/廣『州』
- 69．Where are Leonardo da Vinci’s works shown?(A)In the East Wing.(B)In the main West Wing.(C)In
- BThe baby is just one day old and has not yet left hospital. She is quiet but alert (警觉)。Twenty cent
- 請說明青少年在皮亞傑(J. Piaget)形式運思期的認知發展特徵。
- (A)place (B) action (C)play (D)effect
- 70．Which underground station is closest to the National Gallery?(A)Piccadilly Circus.(B)Leiceste
- (B)bies are sensitive to the change in______.(A)the size of cards.(B) the colour of pictures.
- 請列舉青少年常見的性生理困擾；並請說明學校如何有效地推展青少年的性教育與輔導 工作？
- Why did the researchers test the babies with drumbeats?(A)To reduce the difficulty of the exp