单选题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 a

题目
单选题
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.

相似考题

1.In JUNOS software, which statement is true regarding the OSPF advertisement of the loopback IP address on the ABR?()A. When Area 0 is active, the loopback interface must be configured in OSPF for it to be advertised.B. When Area 0 is active, the loopback address is automatically advertised into other areas.C. When Area 0 is active, the OSPF router-id must match the loopback address for the loopback address to be advertised.D. When Area 0 is active, the router-id must be configured for the loopback address to be advertised.

2.Which of the following wiring standards would MOST likely be used to interconnect two devices without the use of a hub or switch?()A.568AB.568BC.CrossoverD.Loopback

3.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.

4.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.

参考答案和解析
正确答案： C
解析： 暂无解析
更多“单选题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 a”相关问题

  • 第1题：

    The following configuration exists on a router on one end of an IPv6 tunnel. Although the configuration added so far is correct, the configuration is incomplete. Which type of tunnel is most likely to be intended by the network engineer？（）interface loopback 1ip address 192.168.1.1 255.255.255.255interface tunnel 2ipv6 address 2002:C0A8:10 1::1/64tunnel source loopback 1

    A. Automatic 6to4

    B. Manually configured tunnel

    C. ISATAP

    D. GRE


    参考答案：A

  • 第2题：

    下面关于loopback地址的说法，正确的是（）

    • A、loopback又称管理地址，每个设备只有1个loopback地址；
    • B、当设备的某个接口为down，则loopback也会相应的down；
    • C、Loopback地址是逻辑地址，与物理接口的状态无关；
    • D、以上都不对。

    正确答案:C

  • 第3题：

    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.

    正确答案:D

  • 第4题：

    This question is about the formation of OSPF adjacency. An OSPF adjacency will not form correctly across a point-to-point link in the same area. Which would most likely cause this problem？（）

    • A、Each interface has a different OSPF cost.
    • B、Each interface is configured with secondary addresses as well as primary addresses.
    • C、Each interface has a different MTU size.
    • D、Each interface is configured with theip unnumbered loopback 0 command.

    正确答案:C

  • 第5题：

    Which of the following should a technician MOST likely use to test a RS-232 port?（）

    • A、Loopback adapter
    • B、Power supply tester
    • C、The ping command
    • D、Multimeter

    正确答案:A

  • 第6题：

    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.

    正确答案:D

  • 第7题：

    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.

    正确答案:D

  • 第8题：

    单选题
    In a cluster using /etc/hosts for name resolution， which of the following describes the minimum requirementsfor the /etc/hosts file？（）
    A

    IP address and IP label of each service and boot interface in the cluster

    B

    IP address and IP label of each service and boot interface in the cluster， loopback interface， and the hostname of the node

    C

    IP address and IP label of each service and boot interface in the cluster， the loopbackinterface， and the cluster gateway

    D

    IP address and IP label of each service and boot interface in the cluster， the loopbackinterface， the cluster gateway， and the subnet network addresses


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    A system administrator did not receive a response while attempting to ping loopback. Which of the following would most likely resolve this problem？（）
    A

    Issue startsrc -s loopback

    B

    Issue startsrc -g tcpip

    C

    Issue rc.tcpip

    D

    Reconnect the network cable


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    In JUNOS software, which statement is true regarding the OSPF advertisement of the loopback IP address on the ABR?（）
    A

    When Area 0 is active, the loopback interface must be configured in OSPF for it to be advertised.

    B

    When Area 0 is active, the loopback address is automatically advertised into other areas.

    C

    When Area 0 is active, the OSPF router-id must match the loopback address for the loopback address to be advertised.

    D

    When Area 0 is active, the router-id must be configured for the loopback address to be advertised.


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    OSPF is enabled on router A. You execute the following command on router A and receive theaccompanying output:RouterA#ping 224.0.0.5 repeat1Type escape sequence to abort.Sending 1, 1 00 - byte ICMP Echos to 224.0.0.5, timeout is 2 seconds:Reply to request 0 from 10.100.100.1, 4 ms10.100.100.1 is the IP address of a loopback interface on router A. What can you conclude about router A?（）
    A

    Only the router A loopback interface is parti cipating in the OSPF routing process

    B

    None of the router A interfaces are participating in the OSPF routing process

    C

    Router A is using the loopback interface IP address as its OSPF router ID

    D

    Router A does not have any reachable OSPF neighbors


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    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.


    正确答案： B
    解析： 暂无解析

  • 第13题：

    On the assumption that every OSPF router in a particular area is configured with there is no loopback interface set?()

    A. The IP address of the first Fast Ethernet interface.

    B. The IP address of the console management interface.

    C. The highest IP address among its active interfaces.

    D. The lowest IP address among its active interfaces.

    E. There will be no router ID until a loopback interface is configured.


    参考答案：C

  • 第14题：

    Based on the following items， which two types of interfaces are found on all network-based IPS sensors？（）

    • A、Loopback interface
    • B、Command and control interface
    • C、Monitoring interface
    • D、Management interface

    正确答案:B,C

  • 第15题：

    A system administrator did not receive a response while attempting to ping loopback. Which of the following would most likely resolve this problem？（）

    • A、Issue startsrc -s loopback
    • B、Issue startsrc -g tcpip
    • C、Issue rc.tcpip
    • D、Reconnect the network cable

    正确答案:C

  • 第16题：

    OSPF is enabled on router A. You execute the following command on router A and receive theaccompanying output:RouterA#ping 224.0.0.5 repeat1Type escape sequence to abort.Sending 1, 1 00 - byte ICMP Echos to 224.0.0.5, timeout is 2 seconds:Reply to request 0 from 10.100.100.1, 4 ms10.100.100.1 is the IP address of a loopback interface on router A. What can you conclude about router A?（）

    • A、Only the router A loopback interface is parti cipating in the OSPF routing process
    • B、None of the router A interfaces are participating in the OSPF routing process
    • C、Router A is using the loopback interface IP address as its OSPF router ID
    • D、Router A does not have any reachable OSPF neighbors

    正确答案:D

  • 第17题：

    In a cluster using /etc/hosts for name resolution， which of the following describes the minimum requirementsfor the /etc/hosts file？（）

    • A、IP address and IP label of each service and boot interface in the cluster
    • B、IP address and IP label of each service and boot interface in the cluster， loopback interface， and the hostname of the node
    • C、IP address and IP label of each service and boot interface in the cluster， the loopbackinterface， and the cluster gateway
    • D、IP address and IP label of each service and boot interface in the cluster， the loopbackinterface， the cluster gateway， and the subnet network addresses

    正确答案:B

  • 第18题：

    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.

    正确答案:D

  • 第19题：

    Which set of commands correctly builds a PPP over Ethernet connection on a DSL connection?（）

    • A、interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation ppp ppp authentication chap ip unnumbered loopback 1
    • B、interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation pppoe interface pppoe 5/1.1 encapsulation ppp ppp authentication chap ip unnumbered loopback 1
    • C、interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation pppoe interface atm 5/1.1.1 encap ppp ppp authentication chap ip unnumbered loopback 1
    • D、interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation pppoe ppp authentication chap ip unnumbered loopback 1

    正确答案:C

  • 第20题：

    单选题
    On the assumption that every OSPF router in a particular area is configured with there is no loopback interface set?（）
    A

    The IP address of the first Fast Ethernet interface.

    B

    The IP address of the console management interface.

    C

    The highest IP address among its active interfaces.

    D

    The lowest IP address among its active interfaces.

    E

    There will be no router ID until a loopback interface is configured.


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    The following configuration exists on a router on one end of an IPv6 tunnel. Although the configuration added so far is correct, the configuration is incomplete. Which type of tunnel is most likely to be intended by the network engineer？（） interface loopback 1 ip address 192.168.1.1 255.255.255.255 interface tunnel 2 ipv6 address 2002:C0A8:10 1::1/64 tunnel source loopback 1
    A

    Automatic 6to4

    B

    Manually configured tunnel

    C

    ISATAP

    D

    GRE


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    This question is about the formation of OSPF adjacency. An OSPF adjacency will not form correctly across a point-to-point link in the same area. Which would most likely cause this problem？（）
    A

    Each interface has a different OSPF cost.

    B

    Each interface is configured with secondary addresses as well as primary addresses.

    C

    Each interface has a different MTU size.

    D

    Each interface is configured with theip unnumbered loopback 0 command.


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    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.


    正确答案： C
    解析： 暂无解析

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