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.
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.
相关考题：
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.
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.
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
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.
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 1A. Automatic 6to4B. Manually configured tunnelC. ISATAPD. GRE
The following configura tion exists on a router on one end of an IPv6 tunnel. Which type of tunnel is created by this configuration?（）interface loopback 1ip address 1.1.1.1 255.255.255.255interface tunnel 2ipv6 address 2000::1::/64tunnel source loopback 1tunnel destina tion 2.2.2.2tunnel mode ipv6ipipv6 eigrp 1A. Automatic 6to4B. Manually configured tunnelC. ISATAPD. GRE
OSPF is enabled on router A. You execute the following command on router A and receive theaccompanying output:RouterAping 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 processB. None of the router A interfaces are participating in the OSPF routing processC. Router A is using the loopback interface IP address as its OSPF router IDD. Router A does not have any reachable OSPF neighbors
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.
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。
Based on the following items， which two types of interfaces are found on all network-based IPS sensors？（）A、Loopback interfaceB、Command and control interfaceC、Monitoring interfaceD、Management interface
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.
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 loopbackB、Issue startsrc -g tcpipC、Issue rc.tcpipD、Reconnect the network cable
Which two steps are needed when configuring multiple RPs using MSDP within a single PIM domain? （）A、Configure a non-unique address on the loopback interface for use by the PIM RP.B、Configure MSDP with the unique address (router ID) as the local address of the peer.C、Configure MSDP with the non-unique address (router ID) as the local address of the peer.D、Configure a unique address on the loopback interface, used as the PIM RP.
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
The following configura tion exists on a router on one end of an IPv6 tunnel. Which type of tunnel is created by this configuration?（） interface loopback 1 ip address 1.1.1.1 255.255.255.255 interface tunnel 2 ipv6 address 2000::1::/64 tunnel source loopback 1 tunnel destina tion 2.2.2.2 tunnel mode ipv6ip ipv6 eigrp 1A、Automatic 6to4B、Manually configured tunnelC、ISATAPD、GRE
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.
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 processB、None of the router A interfaces are participating in the OSPF routing processC、Router A is using the loopback interface IP address as its OSPF router IDD、Router A does not have any reachable OSPF neighbors
Which of the following should a technician MOST likely use to test a RS-232 port?（）A、Loopback adapterB、Power supply testerC、The ping commandD、Multimeter
A user is browsing to a newly created internal site called www.comptia.org. After putting incredentials the page comes up blank. Which of the following is MOST likely the cause?（）A、The user must add the new site to the local log file.B、A proxy exception has not been configured.C、SMTP has not been configured.D、The loopback address has not been configured.
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 clusterB、IP address and IP label of each service and boot interface in the cluster， loopback interface， and the hostname of the nodeC、IP address and IP label of each service and boot interface in the cluster， the loopbackinterface， and the cluster gatewayD、IP address and IP label of each service and boot interface in the cluster， the loopbackinterface， the cluster gateway， and the subnet network addresses
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.
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.
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 1B、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 1C、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 1D、interface atm 5/1.1 atm pvc 1 0 101 aal5snap encapsulation pppoe ppp authentication chap ip unnumbered loopback 1
In a Bridged 1483 network, which set of commands is used to configure an ATM sub-interface?（）A、interface atm 6/0.33 atm pvc 33 0 33 aal5snap ip description Company-XYZ encapsulation bridge1483 ip address unnumbered loopback0B、interface atm 6/0.33 atm pvc 33 0 33 aal5snap ip description Company-XYZ encapsulation bridge1483 ip unnumbered loopback0C、interface atm 6/0.33 atm pvc 33 0 33 aal5snap encapsulation bridge1483 ip description Company-XYZ ip address unnumbered loopback0D、interface atm 6/0.33 atm pvc 33 0 33 aal5snap encapsulation bridge1483 ip description Company-XYZ ip unnumbered loopback0
单选题On the assumption that every OSPF router in a particular area is configured with there is no loopback interface set?（）AThe IP address of the first Fast Ethernet interface.BThe IP address of the console management interface.CThe highest IP address among its active interfaces.DThe lowest IP address among its active interfaces.EThere will be no router ID until a loopback interface is configured.
单选题The ping loopback hangs with no output.Which of the following is the most likely cause?（）AThe loopback interface is down and resolv.conf is configured.BThe loopback is not in /etc/hosts and resolv.conf is configured.CThe loopback interface is down and resolv.conf is not configured.DThe loopback is not in /etc/hosts and resolv.conf is not configured.
单选题The ping loopback hangs with no output. Which of the following is the most likely cause？（）AThe loopback interface is down and resolv.conf is configured.BThe loopback is not in /etc/hosts and resolv.conf is configured.CThe loopback interface is down and resolv.conf is not configured.DThe loopback is not in /etc/hosts and resolv.conf is not configured.