Free Sep-2022 H12-261-ENU Certification Sample Questions certification Exam [Q306-Q329]

Rate this post

Free Sep-2022 H12-261-ENU Certification Sample Questions certification Exam

Certification Topics of H12-261-ENU Exam PDF Recently Updated Questions

QUESTION 306
Which type of LSA cannot in the OSPF stub area? (Multiple Choice)

Type-7

Type-5

Type-4

Type-3

QUESTION 307
If a Huawei switch runs the RSTP protocol, when will the BPDU on a port of the switch be aged?

On the interface, RSTP does not age BPDUs.

After more than 6 seconds

After MaxAge timed out

After the Hold timed out

After the Forward Delay timed out

QUESTION 308
If the default route is not used in the local IP routing table, the default route-import command is used to advertise the default route to the BGP peer (group).

True

False

QUESTION 309
In order to reduce the number of OSPF routes in some stub areas, OSPF has developed a special area function. Which of the following description about the OSPF special area is correct?

Special area routers cannot establish OSPF neighbor relationships with regular area routers.

Any OSPF area can be configured as a special area.

As -External-lsa is released to the Stub area

ASBR-Summary-LSA is allowed to be advertised to the NSSA area.

QUESTION 310
Which AS_PATH can be matched by command ip as-path-filter 1 permit ^12.*74$?

AS_PATH （ 32 1274 23 )

AS_PATH （ 123 621 743 2374 )

AS_PATH （ 321 12 2374 )

AS_PATH （ 125 328 74 23 )

QUESTION 311
Which of the following are used in Ethernet? (Multiple choice)

Non-canonical format MAC address

CSMA/CD in multiple access

MAC address in canonical format

802.5 encapsulated frames

802.3 encapsulated frames

QUESTION 312
Which of the following description about the related information of BGP4+ is correct? (Multiple choice)

Bgp4+ can use the dampening command to suppress IBGP routes.

Modifying the Router ID of the BCP will cause the BGP connection between the routers to be re-established.

The Next Hop attribute in BCP4+ is represented by the Pv6 address, which can be the link-local address of the next hop.

BGP4+ does not support automatic route aggregation.

QUESTION 313
BGP 4+ is running between the two routers. The neighbor relationship is normal. However, the BGP routing table of the local router does not have any neighbor routing entries. Which of the following is the possible reason?

The routing entries of the peer BGP routing table are non-optimal.

The next hop address of the BGP routing entry is unreachable.

Peer ignore configured on the peer

The peer is configured with Active-route-advertise

QUESTION 314
The Type 5 LSA in OSPF is used to pass external routes. Which of the following statement about the five Type 5 LSA is wrong?

The router in the same area as the ASBR can calculate the external route through the intra-area LSA and the Type 5 LSA.

Configure the corresponding policies on the ABR and ASBR to filter the Type 5 LSA.

The Type 5 LSA is advertised by the ASBR and flooded in the OSPF network in the non-Stub/NSSA area.

The FA address is included in the Type 5 LSA, and the FA address is 0.0.0.0, but has no practical effect as a reservation.

QUESTION 315
In the command aggregate ipv4-address {mask | mask-length} [ as-set | attribute-policy route-policy-name1 | detail-suppressed | origin-policy route-policy-name2 | suppress-policy route-policy-name3], multiple parameters can be used to influence the summary route and its results. What is the correct description about this command?

If the Suppress policy is configured, the aggregated route is generated. The if-match clause of the route-policy is used to select the detailed route to be suppressed. The detailed route matching the route-policy is still advertised to other BGP neighbors.

If the Origin-policy is configured, only the detailed routes matching the Route-policy can participate in the aggregation.

If Attribute-policy is configured, you can change the attributes of the aggregated route.

If As-set is configured, AS_ATH of the summary route contains AS path information of all specific routes to prevent routing loops.

QUESTION 316
Which of the following is true about the ISIS LSP fragmentation extension?

Enable the ISIS router to generate more LSP fragments to carry more ISIS information.

ISIS fragmentation extensions are equally valid for Hello packets.

ISIS fragmentation extensions are achieved by adding virtual systems, which can be expanded to a maximum of 1000 virtual systems.

The maximum number of fragments that ISIS router can generate is 1024.

QUESTION 317
A router is configured for OSPF and is connected to two areas: area 0 and area 1. You configure area 1 as a stub area. Which LSA types will exist inside area 1?

Type 7

Type 1 and 2

Type 1, 2, and 5

Type 3 and 4

Type 1, 2, and 3

QUESTION 318
Which of following statements is true about the domain-authentication-mode md5 hello command in the IS-IS process?

The routing domain authentication is used to carry the authentication information during the delivery process of SNPs and LSPs of Level-1 and Level-2.

The domain authentication mode of all routers in the same routing domain is MD5, the password is hello, and the ISIS SNP and LSP are flooded.

This command is mainly used to enable ISIS Hello packets to carry authentication information during the delivery process.

ISIS certification cannot be applied in IPv6 environment.

QUESTION 319
Configuring AS-path-filter ip as-path-fltr10 permit_100$ means match the route received from AS100.

True

False

QUESTION 320
Regarding the Stub area and the NSSA area of the OSPF protocol, which of the following statement is wrong?

Type 5 LSA is not allowed to be injected in the Stub area, and Type 5 LSA is allowed to inject in the NSSA area.

Both the Stub area and the NSSA area are allowed to inject Type 3 LSA.

Stub area and NSSA area are not allowed to inject Type 4 LSA.

The Type 7 LSA is not allowed to be injected in the Stub area, and the NSSA area is allowed to inject the Type 7 LSA.

QUESTION 321
The interface Serial0 of an existing router goes to OSPF and sets the interface Serial0 to the Silent interface. What effect does this setting have?

OSPF does not establish any adjacencies through the interface.

OSPF does not add routes learned from the interface to the local routing table.

OSPF will receive routing updates from neighbors

OSPF establishes available adjacencies through this interface.

QUESTION 322
Which layers are shared in the OSI reference model and the TCP/IP model? (Multiple Choice)

Expression layer

Application layer

Transport layer

Session layer

Data link layer

QUESTION 323
Which of the following description about BGP routing selection is wrong?

Non-aggregated routes take precedence over aggregated routes.

In the case of Pref-Val and local_preference equal, if the locally generated route, an IBGP route, the EBGP routes BGP preference consistent, efficient routing priority locally generated is first.

See the following entry in the BGP routing table: * 172.16.1.11/32 0.0.0.010 0 ? Indicates that the route is available non-optimal.

The route that is unreachable for nexthop is an invalid route and does not participate in the preference.

QUESTION 324
The following procedure for NDP to resolve the link layer address is correct or not.

True

False

QUESTION 325
Which of the following tools cannot be directly referenced by the If-match clause in the Route-policy?

Regular expression

IP-prefix

AS-path-filter

Community-filt

QUESTION 326
What do we usually call the devices in the MPLS BGP VPN domain? (Multiple choice)

User router

QUESTION 327
When a packet is forwarded to the public network in the MPLS BGP VPN network in the domain, it will be encapsulated with two layers of MPLS labels. Which of the following description about the two-layer label is wrong?

By default, the router assigns the same label value to all VPNv4 routes destined for the peer PE.

The private network label is carried and distributed when the route is delivered by MP-BGP. The public network label is distributed by the LDP protocol.

The export PE uses the inner label when determining which export CE the message should be sent to.

MPLS BGP VPN uses two-layer label public network label (also known as outer label) and private network label (also known as inner label).

QUESTION 328
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)

R5 can learn the loopback route of R2 normally.

R3 cannot learn the loopback route of R2.

R1 can learn the loopback route of R2 normally.

R3 can learn the loopback route of R2 normally.

QUESTION 329
The following statement about the security confederation SA in IPsec, which is wrong?

The SA is uniquely identified by a triplet that includes the Security Parameter Index (SP), the source IP address and the security protocol number used (AH or ESP).

Use display IPsec to view information about encryption algorithms, traffic, and other information used between another IPsec peer.

IPsec only supports the use of symmetric encryption algorithms to encrypt data.

There must be two-way SA between IPsec peers to establish an IPsec VPN connection.