Best Preparations of H12-261-ENU Exam 2021 HCIE-R&S Unlimited 525 Questions
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NEW QUESTION 51
The configurations of the defined route-policy test are as follows:
ip community-filter 1 permit 100:1
ip as-path-filter 2 permit ^100$
route-policy test permit node 10
if-match community-filter 1
if-match AS-path-filter 2
apply as-path 200
Which of the following statements is true?
- A. The BGP routes will match the route-policy test as long as they contain community attribute 100:1. The as-path of the matched routes is then changed to 200.
- B. The BGP routes will match the route-policy test only when they contain either community attribute 100:1 or as-path 100. The as-path of the matched routes is then changed to 200.
- C. The BGP routes will match the route-policy test only when they contain both community attribute 100:1 and as-path 100. The as-path of the matched routes is then changed to 200.
- D. The BGP routes will match the route-policy test only when they contain as-path 100. The as-path of the matched routes is then changed to 200.
Answer: C
NEW QUESTION 52
In an IPv6 network, two nodes A and B are neighbors each other. If node A sends an NS message to node B, if node B receives a message and then replies the NA message, then checked on node A, what will the neighbor status be marked?
- A. Reachable
- B. Incomplete
- C. Probe
- D. Stale
Answer: A
NEW QUESTION 53
If OSPF is running on the network, the non-backbone area in the OSPP area is configured as the LSA with the ls-id of 0.0.0.0 in the Totally Stub Totally Stub area. What type of LSA is the LSA?
- A. LSA3
- B. LSA1
- C. LSA2
- D. LSA5
Answer: A
NEW QUESTION 54
The network administrator defines a traffic policing strategy as follows:
[Huawei] display traffic policy user-defined
User Defined Traffic Policy Information
Policy: p1
Classifier: c1
Operator: OR
Behavior: b1
Committed Access Rate
CIR 256(kbps) , PIR 0(kbps) , CBS 48128(byte) , PBS 80128(byte)
Color Mode: color blind
Conform Action: pass
Yellow Action: pass
Exceed Action: discard
statistic: enable
The router port to which this policy is applied has been idle for about 10 seconds. At this time, there is a huge amount of burst traffic of the c1 type, then how many bytes will the packet be colored in green?
- A. 80128 bytes
- B. 48128 bytes
- C. 256K bytes
- D. 32K bytes
Answer: B
NEW QUESTION 55
A company has built an OSPF network as shown in the following figure. The links form an OSPF neighbor relationship. All devices have announced their own loopback address. On one day, the S1-R2 and S2-R1 links are faulty. Which of the following description is correct? (Area 0 is split) (Multiple choice)
- A. R3 cannot learn the loopback route of R2.
- B. R3 can learn the loopback route of R2 normally.
- C. R1 can learn the loopback route of R2 normally.
- D. R5 can learn the loopback route of R2 normally.
Answer: A,D
NEW QUESTION 56
There are now two gateway routers that provide services for hosts on a LAN network to connect to the extranet. What techniques should be used on these two redundant routers to make them the default gateway for hosts in the LAN network?
- A. BOOTP
- B. RIP
- C. VRRP
- D. DHCP
- E. OSPF
Answer: C
NEW QUESTION 57
As shown in the following topology, EBGP is run between AS100, AS200, AS300, and AS400. The neighbor relationship is established. When AS400 receives the BGP route from the network segment 1.1.1.1/32, what is the correct path order recorded in the AS path attribute?
- A. 400 , 300 , 200 , 100
- B. 300 , 200 , 100
- C. 100 , 200 , 300 , 400
- D. 10 , 200 , 3
Answer: B
NEW QUESTION 58
Regarding the basic forwarding process of MPLS, which of the following description is wrong?
- A. When the packet is forwarded in the MPLS domain, the top label of the MPLS packet is replaced by the label allocated by the next hop according to the label forwarding table.
- B. When the IP packets into the MPLS domain, checks the destination IP address of the corresponding Tunnel ID if TunnelID is 0x0, and proceeds to MPLS forwarding process.
- C. When an IP packet enters the MPLS domain, the MPLS border device inserts a new label between the packet layer 2 header and the IP header.
- D. By default, the value of the label assigned to the penultimate hop node by the Egress1 node that supports PHP is 3.
Answer: B
NEW QUESTION 59
Two routers are connected through the serial port, but the interconnection interface cannot be pinged. Now check the port status as follows, which is the possible reason? (No figure is shown, one PPP, and one HDLC, you can find the reason.)
- A. The IP address is not on the same network segment.
- B. Link bandwidth is not enough
- C. Subnet mask does not match
- D. Link layer protocol is inconsistent
Answer: D
NEW QUESTION 60
Use WRED to avoid congestion. Which of the following scenarios is better for deploying WRED?
- A. Deploy on a serial link.
- B. Deploy on low bandwidth links.
- C. WRED randomly drops packets, the effect is not related to the scene.
- D. The main is TCP traffic in the network.
- E. The main is UDP traffic in the network.
Answer: D
NEW QUESTION 61
An existing router running OSPF is connected to Zone 0 and Zone 1. You configure zone 1 as a stub area. What types of LSA are only operating inside Zone 1?
- A. Type 1 LSA, Type 2 LSA and Type 3 LSA
- B. Type 1 LSA, Type 2 LSA and Type 5 LSA
- C. Type 7 LSA
- D. Type 3 LSA and Type 4 LSA
- E. Type 1 LSA and Type 2 LSA
Answer: A
NEW QUESTION 62
A number of transition techniques have emerged in the process of replacing a P4 address used in a network with a Pv6 address. These technologies are divided into two categories, one is PV4/IPv6 coexistence technology and the other is v4/P6 interworking technology. Which of the following options belong to Pv4/IP6 coexistence technology? (Multiple Choice)
- A. NAT64
- B. IPv6 over IPv4
- C. Dual-Stack
- D. ISATAP
Answer: B,C,D
NEW QUESTION 63
Which type of prefix will the router running BGP advertise to its own IBGP neighbor (assuming the router is not configured as a route reflector)?
- A. The prefix is learned by other BGF neighbors, or the prefix is locally learned through network or route introduction.
- B. Presences existing in routing shows
- C. The prefix is learned by other IBGP neighbors, or the prefix is learned from the EBGP neighbor, or the prefix is learned through the route introduction.
- D. The prefix is learned through the EBGP neighbor, or the prefix is learned from the RR.
- E. The prefix is learned through the EBGP neighbor, or the prefix is learned locally through the network or route.
Answer: E
NEW QUESTION 64
Regarding route introduction, which of the following description is wrong?
- A. bgp supports both import and network when generating routes. Network mode is more accurate.
- B. Introducing IBGP routes in OSPF may cause routing loops.
- C. By default, the default metric of the external route redistributed by OSPF is 1, and the imported external route type is Type2.
- D. After the ISIS level-2 network route is imported to the level-1 route, the routing loop is formed if the import policy is not manually configured.
Answer: D
NEW QUESTION 65
Which of the following command is displayed to determine that the loop fault of the switch is generated?
A:
B:
C:
D:
- A. Option A
- B. Option D
- C. Option B
- D. Option C
Answer: B
NEW QUESTION 66
Which of the following is true about Smart-link? (Multiple Choice)
- A. Smart-link can be mixed with STP under the interface.
- B. Smart-link cannot detect the uplink and downlink status.
- C. Smart-link mainly includes two roles: primary port and slave port.
- D. Smart-link supports load sharing.
Answer: C,D
NEW QUESTION 67
About the description of CHAP authentication function in the PPP protocol, which of the following are correct? (Multiple Choice)
- A. The user name must be configured under the authenticated interface of CHAP authentication.
- B. If the authenticator does not have a username, the password cannot be configured on the authenticated interface.
- C. Three-message interactive authentication is required, and the username is transmitted only on the network without transmitting the password.
- D. Calculate a hash value using the authentication sequence ID, random number, and key by the MD5 algorithm
Answer: A,C,D
NEW QUESTION 68
Regarding the stub area in the OSPF protocol, the following statement which is correct? (Multiple Choice)
- A. stub area is not allowed to inject type7 LSA
- B. The virtual link cannot traverse the stub area.
- C. ASBR cannot exist in the stub area.
- D. The backbone area cannot be configured as a stub area.
Answer: A,B,C,D
NEW QUESTION 69
The network administrator is ready to use the 6to4 automatic tunnel to carry IPv6 data on the IPv4 network. The IPv4 address of the router interface is 138.14.85.210, so the corresponding tunnel address is 2001:8a0e:55d2:1:230:65ff: fe2c:9a6.
- A. False
- B. True
Answer: A
NEW QUESTION 70
A total of 6 bits indicating the priority field in the VLAN (802.1Q) data encapsulation
- A. False
- B. True
Answer: A
NEW QUESTION 71
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