100% Free H12-221-ENU Exam Dumps Use Real HCNP-R&S Dumps With 597 Questions!
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NEW QUESTION 281
The ACL command acl[number]acl-number[match-order(auto|config}], where acl-numbar is used to specify the number of the access control list. The value of the acl-number of the user-defined ACL is?
- A. 1000~3999
- B. 3000~3999
- C. 4000~4999
- D. 5000~5999
Answer: D
NEW QUESTION 282
On non-broadcast networks, OSPF has two operating modes, non-broadcast multiple access and point-to-multipoint, and non-broadcast multiple access requires election of DR/BDR.
- A. False
- B. True
Answer: B
NEW QUESTION 283
Which of the following routes meet the following ACL conditions? (Multiple choices)
- A. 10.1.2.1/32
- B. 10.1.1.1/32
- C. 10.1.3.1/32
- D. 10.1.4.1/32
Answer: B,C
NEW QUESTION 284
Which the following description about Network-Summary-LSA is correct?
- A. When a router receives a Network-Summary-LSA, the router does not run the SPF algorithm.
- B. Network-Summary-LSA is generated by ABR.
- C. When a router receives a Network-Summary-LSA, the router runs the SPF algorithm.
- D. Network-Summary-LSA is generated by ASBR.
Answer: C
NEW QUESTION 285
Which of the following description about OSPF default route is wrong?
- A. Due to the OSC management by the OSPM, the Type 5/7 default route has a higher priority than the Type 3 route.
- B. OSPF default route can be advertised by the ABR to Type3 Default Summary LSA to guide routers in the area to forward packets between areas.
- C. When the router does not have a precisely matched route, it can forward packets through the default route.
- D. OSPF default route is that ASBR can advertise Type 5 external default ASE LSAs or Type 7 external default NSSA LSAs to instruct the routers in the autonomous system (AS) to forward the packets outside AS.
Answer: A
NEW QUESTION 286
Compared with the OSPF protocol, which are the features of IS-IS protocol? (Multiple choices)
- A. More types of network are supported
- B. The scalability of the protocol is better
- C. Less protocol packets
- D. More types of areas are supported
Answer: B,C
NEW QUESTION 287
The description of the network command description in BGP, which is wrong?
- A. By default, BGP does not publish any local network routes.
- B. The injected route needs to strictly match the mask length in the IP routing table.
- C. network cannot be used with the corresponding policy
- D. The route injected through the network must exist in the IP routing table.
Answer: B
NEW QUESTION 288
About the default route of each protocol, which of the following description is wrong?
- A. RIP can deliver default routes.
- B. Static routes can be used to deliver default routes.
- C. BGP can deliver default routes.
- D. OSPF cannot deliver default routes.
Answer: D
NEW QUESTION 289
Which of the following description about OSPF is correct?
- A. OSPF updates regularly every 30 minutes
- B. OSPF uses the Bellman-Ford algorithm, and each router runs the algorithm independently.
- C. OSPF itself does not have a certain mechanism, so OSPF relies on the upper layer protocol, that is TCP, to confirm and process.
- D. OSPF floods an LSU every 5s
Answer: A
NEW QUESTION 290
Which of the following description of BGP features is wrong?
- A. BGP is an external routing protocol used to transfer routing information between ASs.
- B. BGP is a link state protocol.
- C. BGP supports CIDR.
- D. BGP has a rich route filtering and routing strategy.
Answer: B
NEW QUESTION 291
An advanced ACL is a series of ordered rules composed of the permit | deny statement. Which of the following attributes can be used by these rules to describe IP packets? (Multiple choice)
- A. Types and Message Codes of ICMP Messages
- B. Source address
- C. Port number
- D. Destination address
Answer: A,B,C,D
NEW QUESTION 292
The role of the Hello message in PIM-SM is: (Multiple choice)
- A. Establish and maintain neighbor relationships
- B. Register with the RP
- C. Election network segment BDR
- D. Ability negotiation between neighbors
Answer: A,D
NEW QUESTION 293
Which of the following can't inject local routes into BGP? (Multiple choices)
- A. Through the network command
- B. Through import command
- C. Receive Routes from Peers
- D. Through summary automatic command
Answer: C,D
NEW QUESTION 294
Link Aggregation is a method of bundling a set of physical interfaces together as a logical interface to increase bandwidth. There are two types of link aggregation control protocols: manual load balancing and static LACP mode.
- A. False
- B. True
Answer: B
NEW QUESTION 295
Which of the following about the OSPF protocol is correct? (Multiple choice)
- A. There are three types of endpoints in the topology formed by OSPF. Router node, stub network segment and Transit network segment.
- B. The default OSPF reference bandwidth is 100 Mbit/s.
- C. The cost of a Transit network segment to a router connected to this network segment is 100.
- D. A broadcast network segment or NBMA network segment with at least two routers is a Transit network segment.
Answer: A,B,D
NEW QUESTION 296
Agreate command (aggregate ipy4-address { mask | mask-length } [ as-set I attribute-policy route-policy-name1 I detail-suppressed I origin-policy route-policy-name2 I suppress-policy route-policy-name3]) There are several parameters that can be used to control the aggregation process and results, which of the descriptions are wrong? (Multiple choices)
- A. attribute-policy is used to set the attribute of the detail route.
- B. The suppress-policy can generate an aggregated route, but suppress the detailed route matching the route-policy to advertise to other neighbors. You can use the if-match clause of the route-policy to selectively suppress some specific routes. That is, the route matching the policy will be suppressed, but other routes that fail the policy will not be suppressed and still be advertised.
- C. Origin-policy selects all detailed routes to generate aggregated routes.
- D. Configure the as-set parameter. The generated AS-Path of an aggregated route contains all the AS-Paths of the detailed route. The AS-Path is ordered to avoid routing loops.
Answer: A,C,D
NEW QUESTION 297
When the MTUs of the interconnected interfaces of the two routers in the broadcast network do not match, Which of the description of the changes in the state of the neighbor relationships between the two routers is correct?
- A. The neighbor relationship between two devices can enter Full.
- B. The neighbor relationship between the two devices stays at Exstart.
- C. The neighbor relationship status of the two devices stays at 2-way.
- D. The status of the neighbor relationship between the two devices stays in the Init state.
Answer: A
NEW QUESTION 298
The following description about OSPF packets, which is incorrect?
- A. The DD packet describes the link state summary information by carrying the LSA header information.
- B. Hello packets are used to discover and maintain neighbor relationships. Hello packets are also used to elect DR and BDR on the broadcast network and NBMA network.
- C. The interval for sending hello packets between two routers must be the same. Otherwise, the neighbor cannot be established.
- D. The DD packet contains all the LSA information and can be used to periodically synchronize the link state database information between neighbors.
Answer: D
NEW QUESTION 299
A route-policy may have multiple nodes. Different node numbers are identified by sec-number. The relationship between the various parts of different seq-numbers is "OR".
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 300
As shown in the figure, on the network running the RSTP protocol, the original root port of the SWC is faulty and the port is in the Down state. In this case, the network goes through which processes to achieve stability?
- A. The prepared port on the SWC becomes the new root port and enters to Forwarding state after passing through the Learning state.
- B. SWC newly elects the root port and enters to Forwarding state after learning.
- C. The prepared port on the SWC becomes the new root port and enters to Forwarding state directly.
- D. SWC newly elects the root port and enters to Forwarding state directly.
Answer: C
NEW QUESTION 301
The route is advertised to the IBGP peer, which of the following is to configure the local address as the next hop?
- A. neighbor x.x.x.x next-hop-self
- B. peer x.x.x.x next-hop-local
- C. neighbor x.x.x.x next-hop-local
- D. peer x.x.x.x next-hop-self
Answer: B
NEW QUESTION 302
The above information about the output of the display ospf peer, which is correct?
- A. The designated router (DR) address is 10.1.1.1.
- B. Address: 10.1.1.1 indicates that the local interface address is 10.1.1.1.
- C. During the DD exchange process, the local end becomes the Slave.
- D. Router ID indicates that the local router ID is 10.1.1.1.
Answer: A
NEW QUESTION 303
The authentication modes supported by the AR2200 are classified according to the encryption algorithm: no authentication, simple plain text verification, and MD5 authentication.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 304
When the ospf cost and bandwidth-reference commands are configured at the same time, the cost value on the interface is based on the bandwidth-reference configuration.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 305
Which command can view the Type 2 LSA details?
- A. display ospf lsdb router
- B. display ip ospf lsdb router
- C. display ospf lsdb network
- D. display ip ospf lsdb network
Answer: C
NEW QUESTION 306
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