单选题Which type of routes are held in Inet.0?（）A multicast and unicast IPv4 routesB ARP tables and MAC reachabilityC IP version 4 unicast routesD IP version 6 and IP version 4 routes

A. inet.0

B. inet.1

C. inet.2

D. inet.3

A.ip host routes

B.ip access-routes

C.host routes enabled

D.access-routes enabled

IPv6 is short for“Internet Protocol Version 6”．IPv6 is the “next generation” protocol designed by the IETF to（ ）the current version Intemet Protocol，IP Version 4("IPv4”)． A．substitution B．swap C．switchover D．replace

Router R1 lists 4 routes for subnet 10.1.1.0/24 in the output of the show ip eigrp topology all - links command. The variance 200 command is configured, but no other related commands are configured. Which of the following rules are true regarding R1‘s decision of what r outes to add to the IP routing table?Note that RD refers to reported distance and FD to feasible distanc E.（）

A. Adds all routes for which the metric is <= 200 * the best metric among all routes

B. Adds all routes because of the ridiculously high variance setting

C. Adds all successor and feasible successor routes

D. Adds all successor and feasible successor routes for which the metric is<=200 * the best metric among all routes

A.inet.0

B.inet.1

C.inet.2

D.inet.3

A. The routing table is populated by the forwarding table.

B. Devices running the Junos OS can accommodate multiple routing tables.

C. Information learned from routing protocols is stored in the routing table.

D. The primary routing table for IPv4 unicast routes is inet.4.

A.multicast and unicast IPv4 routes

B.ARP tables and MAC reachability

C.IP version 4 unicast routes

D.IP version 6 and IP version 4 routes

A. ip sa-validate

B. ip split-horizon

C. ip access-routes

D. ip filter-options

Ipv6 is(71)for "Internet Protocol Version 6"。Ipv6 is the "next generation" protocol design by the IETF to(72)the current version Inernet Protocol, IP Version 4. Most of today's internet uses Ipv4, which is now nearly twenty years old. Ipv4 has been remarkably resilient in spite of its age, but it is beginging to have problems. Most importantly, there is a growing(73)of Ipv4 addresses, which are needed by all new machines added to the Internet. Ipv6 fixs a number of problems in Ipv4, shch as the(74)number of available Ipv4 addresses. It also adds many improvements to Ipv4 in areas such as souting and network autoconfiguration. Ipv6 is expected to gradually replace Ipv4, with the two coexing for a number of years during a transition(75)A.

A．short

B．abbreviate

C．abbreviation

D．initial

IPv6 is short for "Internet Protocol Version 6". IPv6 is the "next generation" protocol designed by the IETF to(71) the current version Internet Protocol, IP version 4("IPv4").

Most of today's internet uses IPv4, which is now more than twenty years old. IPv4 has been(72) resilient in spite of its age, but it is beginning to have problems. Most importantly, there is a growing(73) of IPv4 addresses, which are needed by all new machines added to the Internet. IPv6 fixes a number of problems in IPv4, such as the(74) number of available IPv4 addresses. It also adds many improvements to IPv4 in areas such as routing and network autoconfiguration. IPv6 is expected to gradually replace IPv4, with the two coexisting for a number of years during a transition(75) .

A．substitution

B．swap

C．switchover

D．replace