【单选题】
QUESTION 528网络设备发送的IPv6报文时,会首先将报文长度和NTU值进行对比,如果大于MTU值,则直接丢弃。___
A. 对
B. 错
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答案
B
解析
暂无解析
相关试题
【单选题】
QUESTION 532 在使用Tracert程序测试到达目标节点所经过的路径时,默认对每个TTL值Traceroute都要测()次。___
A. 3
B. 8
C. 6
D. 4
【单选题】
QUESTION 533 下面关于免费ARP报文的作用描述错误的是()。___
A. 在VRRP备份组中用来通告主备发生变换
B. 用于通告一个新的现AC地址:发送方更换网卡,AC地址发生改变,为了能够在AP表项老化前通告所有 主机,发送方可以发送一个免费ARP
C. 用于检查重复的IP地址:正常情况下不会收到ARP回应,如果收到,则表明本网络中存在与自身P地址 重复的地址
D. 免费ARP报文用来在主机空闲时与网关设备保持激活
【单选题】
QUESTION 534 关于ARP报文的说法错误的是?___
A. ARP应答报文是单播方发送的
B. 任何网络设备都需要通过发送ARP报文获取数据链路层标识
C. ARP请求报文是广播发送的
D. ARP报文不能穿越路由器,不能被转发到其他广播域
【单选题】
QUESTION 536交换机收到一个单播数据帧,会在MAC地表中查找目的MAC地址,下列说法错误的是?___
A. 如果查到了这个MAC地址,并且这个MAC地址在MAC地址表中对应的端口不是这个做进入交换机的那 个端口,则交换机执行转发操作
B. 如果查到了这个MAC地址,并且这个MAC地址在这个MAC地址表中对应的端口是这个帧进入交换机的 那个端口,则交换机执行丢弃操作
C. 如果查不到这个MAC地址,则交换机执行泛洪操作
D. 如果查不到这个MAC地址,则交换机执行丢弃操作
【单选题】
QUESTION 541 某台交换机输出信息如下,以下哪个接口可以转发VLAN ID为40的数据帧,并且转发时不携带标签?___
A. GE0/0/4
B. GE0/0/2
C. GE0/0/3
D. GE0/0/5
【单选题】
QUESTION 546 路由器输出信息如下,则此接口获取到的IPv6地址为?___
A. 3000::3000/64
B. 3000::1/64
C. 3000::2/64
D. 2000::1/64
【单选题】
QUESTION 547 在IPv6网络中,OSPFv3不再支持下面哪项特性?___
A. Router-ID
B. 多区域划分
C. 认证功能
D. 以组播方式发送协议报文
【单选题】
QUESTION 548 DHCPv6客户端发送哪个报文,回应DHCPv6服务器发送的Advertise报文?___
A. Offer
B. Request
C. Reply
D. Advertise
【单选题】
QUESTION 550 段路由SR(Segment Routing)是对现有IGP协议进行扩展,基于MPLS协议,采用源路由技术而设计的在 网络上转发数据包的一种协议。___
A. 对
B. 错
【多选题】
如果以太网数据帧Length/Type=0x0806,下列说法正确的是? (多选) ___
A. 此数据帧为Ethernet II帧
B. 此数据帧为IEEE 802.3帧
C. 此数据帧的源MAC地址一定不是FFFF-FFFF-FFFFF
D. 此数据帧的目的MAC地址一定是FFFF-FFFF-FFFFF
【多选题】
使能Proxy ARP功能的路由器收到一个ARP请求报文时,发现其所请求的IP地址不是自己,则会进行如下哪些操作? (多选) ___
A. 如果查到有到该目的地址的路由,则将自己的MAC地址发给ARP请求方
B. 丢弃报文
C. 广播ARP请求报文
D. 查找有无到该目的地址的路由
【多选题】
如下图所示,交换机开启STP协议,当网络稳定后,下列说法正确的有?___
A. SWB是这个网络中的根桥
B. SWA是这个网络中的根桥
C. SWB的两个端口都处于Forwarding状态
D. SWC的两个端口都处于Forwarding状态
【多选题】
下图所示的两台交换机都开启了STP协议,某工程师对此网络做出了如下结论,你认为正确的结论有?(多 选)___
A. SWB的G0/0/2端口稳定在Forwarding状态
B. SWA的G0/0/2端口稳定在Forwarding状态
C. SWB的两个端口都是指定端口
D. SWA的G0/0/3端口稳定在Forwarding状态
E. SWA的两个端口都是指定端口
【多选题】
如下图所示的网络,下列哪些命令可以使RouterA可以转发目的IP地址为10.0.3.3的效据包? (多选) ___
A. ip route-static 10.0.3.3 255.255.255.255 10.0.12.2
B. ip route-static 10.0.2.2 255.255.255.255 10.0.12.2 ip route-static 10.0.3.3 255.255.255.255 10.0.2.2
C. ip route-static 0.0.0.0 0.0.0.0 10.0.12.2
D. ip route-static 10.0.3.3 255.255.255.255 10.0.2.2
【多选题】
下列描述正确的是()。 (多选) ___
A. 路由表中下一跳是多余的,有出接口就可以指导报文转发
B. 通过不同路由协议获得的路由,其优先级也不相同
C. 不同路由协议所定义的度量值不具有可比性
D. 不同路由协议所定义的度量值具有可比性
【多选题】
ip route-static 10.0.2.2 255.255.255.25510.0.12.2 preference 20,关于此命令说法正确的是? (多选) ___
A. 该路由可以指导目的IP地址为10.0.2.2的数据包转发
B. 该路由可以指导目的IP地址为10.0.12.2的数据包转发
C. 该路由优先级为20
D. 该路由的NextHop为10.0.12.2
【多选题】
某台路由器配置信息如下,下列说法正确的有? (多选) ___
A. 域名为huawei的域没有使用计费方案
B. 使用用户名huawei进行认证,则密码需要为654321
C. 域名为huawei的域采用的授权方式为本地授权
D. 域名为huawei的域采用的认证方式为本地认证
【多选题】
55以下哪些字段是IPv6和IPv4报文头中都存在的字段? (多选) ___
A. Source Address
B. Version
C.
D. estination Address
【多选题】
某路由器输出信息如下,下列说法正确的有? (多选) ___
A. 当前使用的VRP版本文件和下次启动使用的VRP文件相同
B. 当前使用的VRP版本文件和下次启动使用的VRP文件不同
C. 当前使用的配置文件和下次启动使用的配置文件不同
D. 当前使用的配置文件和下次启动使用的配置文件相同
【多选题】
78下列关于OSPF邻居状态说法正确的有?(多选)___
A. Exchange状态下路由器相互发送包含链路状态信息摘要的DD报文,描述本地LSDB的内容
B. OSPF的主从关系是在ExStart态下形成的
C. 路由器LSDB同步之后,转化为Ful1状态
D. DD报文的序列号是在Exchange状态下决定的
【多选题】
[R1]ospf [R1-ospf-1]area 1 [R1-ospf-1-area-0.0.0.1]network 10.0.12.0 0.0.0.255如配置所示,管理员在R1 上配置了OSPF,但R1学习不到其他路由器的路由,那么可能的原因是()。(多选)___
A. 此路由器没有配置认证功能,但是邻居路由器配置了认证功能
B. 此路由器配置时,没有配置OSPF进程号
C. 此路由器配置的区域ID和它的邻居路由器的区域ID不同
D. 此路由器在配置oSPF时没有宣告连接邻居的网络
【多选题】
84下列关于缺省路由的说法正确的有?(多选)___
A. 缺省路由只能由管理员手工配置
B. 在路由表中,缺省路由以到网络0.0.0.0(掩码也为0.0.0.0)的路由形式出现
C. 任何一台路由器的路由表中必须存在缺省路由
D. 如果报文的目的地址不能与路由表的任何目的地址相匹配,那么该报文将选取缺省路由进行转发
【多选题】
如下图所示的网络,路由器A和路由器B建立OSPF邻居关系,路由器A的OSPF进程号为1,区域号为0,以 下哪些方式可以使路由器B获得主机A所在网段的路由?(多选) ___
A. ospf 1 area 0.0.0.0 network 192.168.1.00.0.0.255 #
B. ospf 1 import-route direct #
C. ospf 1 area 0.0.0.0 network 192.168.0.00.0.255.255
D. ospf 1 area 0.0.0.0 network 192.168.1.2 0.0.0.0 #
【多选题】
OSPF协议DR和BDR的作用有?(多选) ___
A. 减少邻接关系的数量
B. 减少OSPF协议报文的类型
C. 减少邻接关系建立的时间
D. 减少链路状态信息的交换次数
【多选题】
如图所示的网络中,下列描述正确的是___。
A. RTA与SWC之间的网络为同一个冲突域
B. SWA与SWC之间的网络为同一个广播域
C. SWA与SWC之间的网络为同一个冲突域
D. SWA与SWB之间的网络为同一个广播域
【多选题】
路由器Router D邻居关系如下,下列说法正确的有? (多选)___
A. DR路由器的Router-ID为
B. DR路由器的Router-ID为10.0.1.1
C. 本路由器是DROther路由器
D. 本路由器和Router-ID为10.0.3.3的路由器不能直接交换链路状态信息
【多选题】
SR(Segment Routing)的产生的原因之一是因为传统的LDP存在一些制约其发展的因素,以下关于LDP的问题描述正确有哪些? (多选) ___
A. LDP算路依赖与IGP,在IGP与LDP不同步的情况下会造成黑洞,影响业务
B. LDP本身有11种协议报文,在应用时大大增加了链路带宽的消耗和设备CPU利用率
C. LDP只支持IGP最短路径(最小开销)进行路径计算,不支持流量工程
D. LDP无法实现标签自动分配
【多选题】
关于传输层协议说法正确的有? (多选)___
A. UDP使用SYN和ACK标志位来请求建立连接和确认建立连接
B. 知名端口号范围为0-1023
C. UDP适合传输对时延敏感的流量,并且可以依据报文首部中的序列号字段进行重组
D. TCP连接的建立是一个三次握手的过程,而TCP连接的终止则要经过四次握手
【多选题】
管理员想要更新AR2200路由器的VRP,则正确的方法有(多选)。___
A. 管理员把AR2200配置为TFTP服务器,通过TFTP来传输VRP软件
B. 管理员把AR2200配置为TFTP客户端,通过TFTP来传输VRP软件
C. 管理员把AR2200配置为FTP服务器,通过FTP来传输VRP软件
D. 管理员把AR2200配置为FTP客户端,通过FTP来传输VRP软件
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