更多"The ping loopback hangs with no out"的相关试题:
[单项选择] The ping loopback hangs with no output. Which of the following is the most likely cause？（）
A. The loopback interface is down and resolv.conf is configured.
B. The loopback is not in /etc/hosts and resolv.conf is configured.
C. The loopback interface is down and resolv.conf is not configured.
D. The loopback is not in /etc/hosts and resolv.conf is not configured.
[单项选择]The ping loopback hangs with no output. Which of the following is the most likely cause？（）
A. The loopback interface is down and resolv.conf is configured.
B. The loopback is not in /etc/hosts and resolv.conf is configured.
C. The loopback interface is down and resolv.conf is not configured.
D. The loopback is not in /etc/hosts and resolv.conf is not configured.
[单项选择]Which of the following ping parameters will set the size of the outgoing packet?（）
A. –c
B. i
C. R
D. –s
[多项选择]网络规划时通常会给每台路由器分配一个loopback 地址，loopback 地址的作用是（）
A. 作为路由器在网络中的唯一？标识？，在管理员远程登录（telnet ）时使用
B. 与其他路由器建立IBGP 邻居时作为本设备的源地址使用
C. 与其他路由器建立OSPF 邻居时作为本设备的源地址使用
D. 向网管工作站发送trap 报文时作为本设备的源地址使用
[单项选择]某MSR路由器有四个接口，其IP地址分别为Loopback0：1.1.1.1/32、Loopback1：2.2.2.2/32、GE0/0：172.16.1.1/30、GE0/1：192.168.1.1/30。运行OSPF协议并仅在在两个接口上使能OSPF，则该路由器选择的RouterID为（）。
A. 1.1.1.1
B. 2.2.2.2
C. 172.16.1.1
D. 192.168.1.1
[多项选择]Which two loopback types are supported for serial interfaces on Juniper devices?（）
A. Local
B. Far End
C. Remote
D. Bidirectional
[单项选择]Which command would initiate a loopback on a Gigabit Ethernet interface ge-0/0/0?（）
A. # set interfaces ge-0/0/0 unit 0 loopback
B. # set interfaces ge-0/0/0 gigether-options loopback
C. > set interfaces ge-0/0/0 loopback
D. > loopback ge-0/0/0
[简答题]BGP使用loopback接口建立邻居的好处？
[判断题]直接利用ping工具发送超大的ping数据包，这种攻击称为Ping of Death。
[单项选择]Which of the following is the IPv6 loopback address?（）
A. ：：1
B. 1.1.1.1
C. 127.0.0.1
D. 255.255.255.254
[单项选择]When a local loopback is activated on a PPP serial link, what indicates that the local interface is good?（）
A. A ping to the local address succeeds.
B. A ping to the remote address succeeds.
C. A ping to the remote address received a 'TTL expired' message.
D. The interface shows a flag indicating that a loop is detected.
[单项选择]The system hangs at boot time after starting NFS services.What is the most likely cause?（）
A. The action parameter of rcnfs in /etc/inittab is 'off' and the script called is not exiting.
B. The action parameter of rcnfs in /etc/inittab is 'wait' and the script called is not exiting.
C. The action parameter of rcnfs in /etc/inittab is 'once' and the script called is not exiting.
D. The action parameter of rcnfs in /etc/inittab is 'respawn' and the script called is not exiting.
[判断题]查看某端口发现有“loopback”表示此端口有环路。
[单项选择]How is a loopback cleared on interface ge-0/0/0?（）
A. Issue the operational command clear interfaces ge-0/0/0 loopback local.
B. No command is necessary, the loopback times-out in 5 minutes.
C. Issue the configuration command clear interfaces ge-0/0/0 loopback, then commit.
D. Issue the configuration command delete interfaces ge-0/0/0 gigether-options loopback , then commit.
[单项选择] R1 in ASN 1 with loopback1 address 1.1.1.1 needs to be configured with an iBGP connection to R2 with loopback2 IP address 2.2.2.2. The connection should use the loopbacks. Which o f the following commands is required on R1?（）
A. neighbor 1.1.1.1 remote- as 1
B. neighbor 2.2.2.2 remote- as 2
C. neighbor 2.2.2.2 update - source loopback1
D. neighbor 2.2.2.2 ibgp -multihop 2
E. neighbor 2.2.2.2 ibgp - mode
[单项选择]在OSPE环境中如果路由器上没有配置回环地址（Loopback address）那么路由器的route id（）。
A. 缺省情况下为255
B. 为路由器的主机名
C. 是路由器上最高的ip地址
D. 必须通过priority命令配置优先级才可以决定
[判断题]通常OSPF 做路由汇聚时要对链路地址，业务地址和Loopback 地址做汇聚。
[单项选择]通常规划loopback 地址时，我们选择使用（）
A. 30 位掩码
B. 31 位掩码
C. 32 位掩码
D. 任意位掩码
[判断题]IPv6 网络中，可以给路由器的Loopback 接口配置IPv6 地址。
