Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.0.0.1?()A.::1B.::C.2000::/3D.0::/10

第1题：

第2题：

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第4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:C

第5题：

The network administrator has asked you to check the status of the workstation’s IP stack by pinging the loopback address.Which address would you ping to perform this task？（）

• A、10.1.1.1
• B、127.0.0.1
• C、192.168.0.1
• D、239.1.1.1

正确答案:B

第6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:A

第7题：

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 1

• A、Automatic 6to4
• B、Manually configured tunnel
• C、ISATAP
• D、GRE

正确答案:B

第8题：

Which two of these statements are true of IPv6 address representation?（）

• A、There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.
• B、A single interface may be assigned multiple IPv6 addresses of any type.
• C、Every IPv6 interface contains at least one loopback address.
• D、The first 64 bits represent the dynamically created interface ID.
• E、Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.

正确答案:B,C

第9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10题：

Which two statements are true about the primary address on an interface? （）

• A、It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface
• B、You use the primary address when you have multiple IP addresses belonging to the same subnet on the same inteface
• C、It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface
• D、By default, the primary address on an interface is selected as the nmerically highest local address configured on the interface

正确答案:A,C

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第16题：

Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.0.0.1?（）

• A、::1
• B、::
• C、2000::/3
• D、0::/10

正确答案:A

第17题：

A Company is using 6to4 tunnels in their IPv6 network. Which two statements are true about thesetunnels？（）

• A、In a 6to4 tunnel， the first two bytes of the IPv6 address will be 0x2002 and the next four byteswill be the hexadecimal equivalent of the IPv4 address
• B、In a 6to4 tunnel， the IPv4 address 192.168.99.1 would be converted to the2002：1315：4463：1：：/64 IPv6 address
• C、In a 6to4 tunnel， the IPv4 address 192.168.99.1 would be converted to the 2002：c0a8：6301：：/48IPv6 address
• D、In a 6to4 tunnel， the first two bytes of the IPv6 address will be locally derived and the next twobytes will be the hexadecimal equivalent of the IPv4 address
• E、In a 6to4 tunnel， the IPv4 address 192.168.99.1 would be converted to the 2002：c0a8：6301：：/16IPv6 address

正确答案:A,C

第18题：

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.

正确答案:A,B

第19题：

Which two statements describe characteristics of IPv6 unicast addressing?（）

• A、Global addresses start with 2000::/3.
• B、Link-local addresses start with FE00:/12.
• C、Link-local addresses start with FF00::/10.
• D、There is only one loopback address and it is ::1.
• E、If a global address is assigned to an interface, then that is the only allowable address for the interface.

正确答案:A,D

第20题：

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

正确答案:A

第21题：

Which two statements are true about the primary address on an interface?（）

• A、It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface.
• B、You use the primary address when you have multiple IP addresses belonging to the same subnet on the same interface.
• C、It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface.
• D、By default, the primary address on an interface is selected as the numerically highest local address configured on the interface.

正确答案:A,C

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