最新的HCNP-R&S認證 H12-221考試題庫

問題1

We can have different network segments in an OSPF area. We can also have same network segment in different OSPF areas.

A. TRUE

B. FALSE

正確答案: B

問題2

CORRECT TEXT
What is the link-state ID of an ASBR-Summary-LSA?
The OSPF Router ID of an LSA's originator The Interface IP address of the DR on the described network segment The address of the described network segment The Router ID of the described ASBR

正確答案:

D

問題3

What does the IP-prefix-filter "ip ip-prefix test index 10 deny 0.0.0.0 0 less-equal 32" mean?

A. Denying all routes

B. Denying only default routes

C. Matching only default routes

D. Matching all routes

正確答案: A

問題4

What are the functions of route filtering? (Select 3 answers)

A. Affects route selection by changing route attributes.

B. Avoids routing loops.

C. Avoids sub-optimal routes generated during route import,

D. Implements accurate route importing and controls route advertisement.

正確答案: B,C,D

問題5

A company has four departments. Department A has 80 PCs, Departments B and C both have 20 PCs, and Department D has 30 PCs. Assuming the IP address 192.168.1.0/x is used, which of the following statements are true if the VLSM technology is employed for subnetting? (Select 2 answers)

A. Plan subnet 192.168.1.128/27 for Department The range of host addresses is 129 to 159.

B. Plan subnet 192.168.1.192/27 for Department The range of host addresses is 192 to 222.

C. Plan subnet 192.168.1.160/27 for Department The range of host addresses is 161 to 190.

D. Plan subnet 192.168.1.0/25 for Department The range of host addresses is 1 to 126.

正確答案: C,D

問題6

Which of the following IP addresses are network addresses? (Select 2 answers)

A. 198.18.12.16/28

B. 192.168.12.64/26

C. 64.104.3.7/28

D. 192.135.12.191/26

正確答案: A,B

問題7

Which statements about OSPF packets are true? (Select 3 answers)

A. Hello packets can be sent after OSPF is enabled on an interface.

B. LS Update packets contain detailed LSA information for LSDB synchronization.

C. LS Request packets are sent only after an adjacency is established.

D. LS Update packets are sent only after an adjacency is established.

正確答案: A,B,C

問題8

Which session is established between BGP peers?

A. UDP

B. TCP

C. Send Hello packet

D. Telnet

正確答案: B

問題9

What is the maximum number of bits that can be used for creating subnets, when the network address is a Class B address?

A. 22

B. 8

C. 16

D. 14

正確答案: D

問題10

Which of the following statements regarding ACL type are true? (Select 3 answers)

A. ACL ranging from 2000 to 2999 belongs to advanced ACL

B. Advanced ACL can be used to match either destination address or source address

C. ACL consists of basic ACL, advanced ACL and interface-based ACL

D. ACL ranging from 3000 to 3999 belongs to advanced ACL

正確答案: B,C,D

問題11

How does an IGMP router maintain group memberships on a network? (Select 2 answers)

A. A receiver host periodically sends a Report message.

B. The router periodically sends Query messages. After a receiver host receives the Query message, the receiver host sends a Report message.

C. The router deletes a group membership only when it receives a Leave message for this group.

D. The router maintains a timer for each group membership which it refreshes for hosts that send report messages and deletes the group membership of hosts that do not.

正確答案: B,D

問題12

Which of the following conditions must be met for importing routes into BGP using the network command? (Select 2 answers)

A. The routes must match the specified mask length.

B. The routes must be optimal in the IP routing table.

C. The routes must be IGP routes.

D. The routes do not need to match the specified mask length.

正確答案: A,B

問題13

Which of the following statements is false?
[RTA]display ospf peer OSPF Process 1 with Router ID 1.1.1.1 Neighbors Area 0.0.0.0 interface 10.1.1.1(Ethernet0/0)'s neighbor(s) RouterlD: 2.2.2.2 Address: 10.1.1.2 State: Full Mode: Nbr is Master Priority: 1 DR: 10.1.1.1 BDR: 10.1.1.2 Dead timer expires in 35s Neighbor has been up for 04:35:02

A. The local router acts as slave.

B. The OSPF Router ID of the neighbor is larger and thus the neighbor acts as a DR.

C. The OSPF Router ID of the neighbor is 2.2.2.2.

D. The OSPF Router ID of the local router is 1.1.1.1.

正確答案: B

問題14

A OSPF network may be structured, or subdivided into routing areas. Such routing areas are a set of network segments.

A. TRUE

B. FALSE

正確答案: A

問題15

Which of the following routes match the ACL filter given below? (Select 2 answers)
"acl number 2001
rule 0 permit source 1.1.1.0 0.0.254.255"

A. 1.1.2.1/32

B. 1.1.3.1/32

C. 1.1.4.1/32

D. 1.1.1.1/32

正確答案: B,D

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