Use Real H12-221-ENU - 100% Cover Real Exam Questions [Sep-2021]
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NEW QUESTION 216
The above is the output information of router. The neighbor relationship between the router and the neighbor 2.2.2.2 is in the Adroe state analysis. Which of the following is the most likely reason?
- A. It may be due to not receiving the KEEPALVIE packet from the other party.
- B. It may be due to a problem with OPEN negotiation.
- C. It may be TCP port 179 is disabled.
- D. It may be due to not receiving the other party's update message.
Answer: C
NEW QUESTION 217
Which of the following information description about a router BGP error output information is wrong?
- A. The Error Type is displayed due to a wrong neighbor relationship.
- B. The time of the error occurred on March 22, 2010 at 11:40:39.
- C. The cause of the error may be due to a miswriting of the peer AS number.
- D. The router's neighbor address is 10.1.1.2.
Answer: C
NEW QUESTION 218
The above information about the output of the display ospf peer, which is correct?
- A. Address: 10.1.1.1 indicates that the local interface address is 10.1.1.1.
- B. The designated router (DR) address is 10.1.1.1.
- C. Router ID indicates that the local router ID is 10.1.1.1.
- D. During the DD exchange process, the local end becomes the Slave.
Answer: B
NEW QUESTION 219
The above is part of the information output by the router Huawei. The following description which is wrong?
- A. The RP address is 2.2.2.2.
- B. The priority of the RP is 0.
- C. Use display pim rp-info command to check the RP information corresponding to the multicast group.
- D. The group address is 225.0.0.0.
Answer: D
NEW QUESTION 220
About the definition of router roles within or between OSPF areas, which is correct? (Multiple Choice)
- A. Backbone router: refers to a router that has at least two interfaces that belong to the backbone area.
- B. ABR: A router that connects one or more areas and connects to the backbone area. These routers act as routing gateways for inter-domain communication.
- C. Internal router: refers to the router whose all interfaces belong to the same area.
- D. ASBR: It can be an internal router, a backbone router, or a regional edge router.
Answer: B,C,D
NEW QUESTION 221
Which of the description of RP In PIM-SM is wrong?
- A. An RP can serve multiple multicast groups simultaneously, but a multicast group can only correspond to multiple RPS.
- B. All the multicast streams in the Shared tree are forwarded to the receiver via RP.
- C. RP can be responsible for the forwarding of several or all multicast groups, and there can be an RP in the network.
- D. All of the group members and the multicast source that sent the multicast data to the group were all converged on the unique RP.
Answer: A
NEW QUESTION 222
Which route prefixes in the following options will be deny when matching the following IP-Prefix when using routing policy for route filtering? (Multiple Choice)
- A. 1.1.1.1/32
- B. 1.1.1.1/26
- C. 1.1.1.2/16
- D. 1.1.1.1/24
Answer: B,C,D
NEW QUESTION 223
In the matters needing attention when configuring the NSSA area, which of the following description is correct?
- A. The NSSA area can propagate external routes from other areas of the OSPF network.
- B. If an area is configured as an NSSA area, all routers in the area must be configured as NSSA areas.
- C. The backbone area can be configured as an NSSA area.
- D. Virtual connections can traverse the NSSA area.
Answer: B
NEW QUESTION 224
BGP neighbors are neighbor relationships established through UDP.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 225
For multicast MAC addresses, which of the following statement is wrong? (Multiple choice)
- A. The role of the multicast MC address is to identify the receivers belonging to the same multicast group on the link layer.
- B. The high 24 of multicast NAC address is 00050, the 25th bit is fixed, and the lower 23 of MAC address is the lower 23b of the multicast P address.
- C. Multiple multicast MAC addresses correspond to 32 IP multicast addresses.
- D. The multicast MAC address uniquely corresponds to one IP multicast address.
Answer: B,D
NEW QUESTION 226
Which description is wrong about BGP routing updates?
- A. BGP periodic update
- B. If there is no RR, the BGP route obtained from the IBGP peer is advertised by the BGP device to its EBGP peer.
- C. The BGP route obtained from the EBGP peer is advertised by the BGP device to all its EBGP and IBGP peers.
- D. When the route is updated, the BGP device only sends the updated BCP route.
Answer: A
NEW QUESTION 227
display bgp routing-table to view BGP routing table, in Status codes (Multiple Choice)
- A. *: indicates that the route is the optimal route selected by BGP.
- B. >: indicates that the route is a valid route and the next hop is reachable.
- C. *: indicates a valid route on the route, and the next hop is reachable.
- D. >: indicates the optimal route selected by BCP on the route.
Answer: C,D
NEW QUESTION 228
What are the types of IS-IS routers? (Multiple Choice)
- A. Level-2 router
- B. Level-1 router
- C. Level-3 router
- D. Level-12 router
Answer: A,B,D
NEW QUESTION 229
The most important reason for the BGP protocol being an enhanced distance vector protocol is:
- A. The BGP route uses the AS-Path attribute and the list of AS that is recorded in the path of the transmission. In the routing rule, the router with short AS-Path is priority, and the AS-PATH attribute is also checked in IBGP.
- B. The BGP route uses the As-Path attribute and the list of AS that is recorded in the path of the transmission. In the routing rule, the router with short AS-Path is priority.
- C. Nexthop is a recognized mandatory attribute of BGP routing.
- D. BGP does not accept routes containing the AS number in the AS-Path attribute.
Answer: B
NEW QUESTION 230
The authentication modes supported by the AR2200 are classified according to the encryption algorithm: no authentication, simple plain text verification, MD5 cipher text verification and HMAC-MD5 verification.
- A. True
- B. False
Answer: A
NEW QUESTION 231
As shown in the figure, BGP has the following configuration, which of the following descriptions are incorrect? (Multiple Choice
- A. Global configuration priority, so the final result is that the timer value of peer 1.1.1.2 is keepalive 30 hold 90.
- B. Peer configuration is preferred, so the final result is that the timer value of peer 1.1.1.2 is keepalive 10 hold 30.
- C. The default configuration is timer keepalive 60 hold 180, so peer 1.1.1.2 has a higher speed than the default value to detect Peer connection failures.
- D. Timer takes the minimum value, so the final result is that the timer value of peer 1.1.1.2 is keepalive 10 hold 30.
Answer: A,D
NEW QUESTION 232
The state of the BGP neighbor establishment process exists as follows. The sequence of state machines experienced by establishing a successful connection is:
- A. 3-1-5-2-4
- B. 3-1-2-5-4
- C. 3-5-1-2-4
- D. 1-3-5-2-4
Answer: A
NEW QUESTION 233
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