默认题库 - CCNP(642-902)

多选题

The IP multicast global configuration command ip pirn send - rp - announce IoopbackO scope 31 group - list 5 issued on multicast router RTA. What are the two results? （）

A. RTA will forward RP announcements provided they are within the scope of 31.
B. RTA will originate RP announcements with TTL s et to 31.
C. RTA will originate RP announcements for multicast groups that match access - list 5.
D. RTA will drop all RP announcements it receives if the TTL field is greater than 31.

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多选题

Which two statements are true about the rendezvo us point (RP) in a multicast network?（）

A. The multicast sources must register with the RP to form the multicast distribution tree.
B. An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).
C. The mu lticast receivers must register with the RP to form the multicast distribution tree.
D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).
E. An RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).
F. To form the multicast distribution tree, the multicast sources register with and the receivers join the R

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多选题

Which three options are supported as address allocation mechanisms for DHCP on Cisco routers?（）

A. The IP address can be automatically assigned to a host.
B. The IP address can be assigned as a random hash value of the burned - in - address of the lowest - numbered LAN interface on the router.
C. The network administrator can assign a speci fic IP address to a specific host MAC address.
D. The IP address can be assigned from configured pools in a reverse lexicographical order.
E. The IP address can be assigned to a host for a limited time or until the host explicitly releases the address.
F. The IP address can be assigned to a host until the host usurps the assigned value using its own dynamic override mechanism.

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单选题

When IP multicast is enabled via PIM, which mode uses the flood and prune metho d? Select the best response.（）

A. PIM sparse - dense
Bidir - PIM
C. PIM - RP
D. PIM - DM
E. PIM - SM

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多选题

Which two methods use IPsec to provide secure connectivity from the branch office to the headquarters office?（）

A. DMVPN
B. MPLS VPN
C. Virtual Tunnel Interface (VTI)
D. SSL VPN
E. PPPoE

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单选题

Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, and into the core of an Enterprise network. The branch also allows local hosts to communicate directly with public sites in th e Internet over this same DSL connection. Which of the following answers defines how the branch NAT config avoids performing NAT for the Enterprise directed traffic but does perform NAT for the Internet - directed traffic?（）

A. By not enabling NAT on the I Psec tunnel interface
By not enabling NAT on the GRE tunnel interface
C. By configuring the NAT - referenced ACL to not permit the Enterprise traffic
D. By asking the ISP to perform NAT in the cloud

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单选题

Which of the following is helpful to allow an IPv6 host to learn the IP address of a default gateway on its subnet?（）

A. Stateful DHCP
B. Stateless RS
C. Stateless autoconfiguration
D. Neighbor Discovery Protocol

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多选题

Which of the following must match for two directly connected routers running OSPF to establish a neighbor adjacency?（）

A. area IDs
B. process IDs
C. router IDs
D. hello timer

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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

Automatic 6to4
B. Manually configured tunnel
C. ISATAP
D. GRE

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单选题

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.（）

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 route

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