[Sep 23, 2022] Latest H12-261_V3.0-ENU PDF Dumps & Real Tests Free Updated Today
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NEW QUESTION 157
After reset isis all is executed, the IS-IS protocol process needs to be restarted and neighbors need to be re-established, but various IS-IS statistics will not be cleared.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 158
Which of the following does the digital certificate not contain?
- A. Issuer
- B. Digital signature
- C. Digital envelope
- D. Public key information
Answer: C
NEW QUESTION 159
Which of the following is true about the ISIS LSP fragmentation extension?
- A. ISIS fragmentation extensions are equally valid for Hello packets.
- B. The maximum number of fragments that ISIS router can generate is 1024.
- C. ISIS fragmentation extensions are achieved by adding virtual systems, which can be expanded to a maximum of 1000 virtual systems.
- D. Enable the ISIS router to generate more LSP fragments to carry more ISIS information.
Answer: D
NEW QUESTION 160
If running PIM-SM on a multicast network, you need to construct a multicast forwarding tree between the multicast source and the receiver to enable the receiver to receive multicast data. Which of the following description about the constructed multicast forwarding tree is correct? (Multiple Choice)
- A. The RTP tree is built between the RP and the receiver.
- B. The SPT tree is built between the RP and the receiver.
- C. The RPT tree is built between the multicast source and the RP.
- D. The SPT tree is built between the multicast source and the RP.
Answer: A,D
NEW QUESTION 161
The Next Header field information only exists in the IPv6 message and is used to indicate whether there is an extended header in IPv6.
- A. True
- B. False
Answer: B
NEW QUESTION 162
Which of the following are the techniques for improving MPLS BGP VPN reliability? (Multiple Choice)
- A. Configure CE dual-homing networking at the access layer.
- B. VPN GR
- C. VPN FRR
- D. Private network IP routing between the PE and the CE FRR
Answer: A,B,C,D
NEW QUESTION 163
How does the IGMPv2 router maintain the network segment group membership? (Multiple choice)
- A. The router will query a specific group
- B. The router periodically sends Query messages. The receiver host reports the Report message after receiving the Query message.
- C. After receiving the leave message, the router immediately deletes the group membership
- D. The router maintains a timeout timer for each group membership, refreshes the timer if it receives the receiver host, and deletes the group membership if the timer expires
Answer: A,B
NEW QUESTION 164
Combined with the output of the following figure, which of the following judgment is correct? (Multiple choice)
- A. The system ID of the R3 router is 0003.0000.0000
- B. R3 must be a DIS of a level-2 link
- C. R3 must be a DIS of a level-1 link
- D. R3 router is a level-2 router
Answer: A,B
NEW QUESTION 165
VRRP priority cannot be set to 0, so the device which send VRRP packets of priority 0 will stop adding VRRP backup group, and inform the backup device immediately become a Master device, without waiting for Master_Down_Interval timer expires.
- A. True
- B. False
Answer: A
NEW QUESTION 166
Which of the following statements about VLAN aggregation are correct? (Multiple questions)
- A. Sub-VLAN contains physical interfaces, and can establish a three-layer VLANIF interface
- B. Sub-VLAN is used to isolate the broadcast domain
- C. A Super VLAN can contain one or more Sub-VLANs
- D. Super Sub-VLAN contains physical interfaces, which can establish a three-layer VLANIF interface
Answer: B,C
NEW QUESTION 167
The network administrator defines a traffic monitoring strategy as follows: The router port to which the strategy is applied has been idle for about 10 seconds. At this time, a huge burst of traffic of type c1 arrives in an instant, then How many bytes will there be of the data packets colored in green?
- A. 80128 bytes
- B. 256K bytes
- C. 48128 bytes
- D. 32K bytes
Answer: C
NEW QUESTION 168
An engineer performs an import operation on an OSPF router in a company network. The following statement about the introduction of a route LSA, which is correct? (Multiple Choice)
- A. Use link state id and advertising router to uniquely identify an LSA
- B. netmask is set to 0
- C. The Advertising Route is set to the router-id of the ASBR.
- D. link state id is set to the destination network segment address
Answer: C,D
NEW QUESTION 169
Regarding BGP recognized arbitrary attributes, which of the following descriptions are correct? (Multiple choice)
- A. BGP router may not recognize
- B. Must be transmitted between BGP neighbors
- C. It is not required to be in the Update message, and it can be decided whether to add to the Update message according to the specific situation
- D. All BGP routers must be identified
Answer: C,D
NEW QUESTION 170
As shown in the figure, which of the following options can satisfy two routers to establish ISIS neighbors?
- A. The ISIS process numbers of the two routers must be the same.
- B. Both routers are of level-1 type.
- C. The two routers keep the default type.
- D. One of the two routers can be level-1-2, and the other can be level-1.
Answer: C
NEW QUESTION 171
In the following topology, R1 can access the Internet through R2 and R3. The EBGP connections are established between R1 and R2, R1 and R3. R2 and R3 belong to the same AS. The default route is advertised through BGP. The traffic that R1 is required to access the Internet is preferably R2. Which of the following practices can be achieved? (Multiple Choice)
- A. R2 specifies that the peer R1 sets the local priority to 150 in the export direction.
- B. R2 specifies that the peer R1 sets the MED attribute to 150 in the export direction.
- C. R1 specifies that the peer R3 sets the MED attribute to 150 in the import direction.
- D. R1 specifies that the peer R2 sets the local priority to 150 in the import direction.
Answer: B,D
NEW QUESTION 172
Which of the following description of TTL in MPLS Header is correct?
- A. Restrictions on LSR
- B. To control the distribution of labels
- C. Used to control the upstream equipment during label distribution
- D. TTL similar to the IP header, used to prevent packet loops
Answer: D
NEW QUESTION 173
What is wrong about the description of RP in PIM-SM?
- A. One RP can serve multiple multicast groups at the same time, and one multicast group can correspond to multiple RPs
- B. All members of the group and multicast sources sending multicast data to the group converge to a unique RP
- C. RP can be responsible for the forwarding of several or all multicast groups, and there can be one RP in the network
- D. The initial multicast stream of all groups in the shared tree is forwarded to the receiver through the RP
Answer: A
NEW QUESTION 174
Which of the following statement about OSPF routing calculation is incorrect?
- A. When the three, five or seven types of LSA change on the network, the PRC algorithm is used to recalculate the route.
- B. The OSPF router uses the FULL SPF algorithm to calculate all nodes in the network when initially calculating the route.
- C. When the first and second types of LSAs on the network change, OSPF uses the ISPF algorithm to recalculate routes.
- D. Compared with the PRC algorithm. The ISPF algorithm only calculates the changed leaf nodes when the route changes.
Answer: D
NEW QUESTION 175
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 backbone area cannot be configured as a stub area.
- C. The virtual link cannot traverse the stub area.
- D. ASBR cannot exist in the stub area.
Answer: A,B,C,D
NEW QUESTION 176
Huawei S series switches, If you need to specify a member switch as the stack master switch, you can power on this first switch 20 and then to the other members of the power switch.
- A. True
- B. False
Answer: A
NEW QUESTION 177
Which of the following types of packets is required to implement virtual machine migration in the BGP EVPN distributed gateway scenario?
- A. Type4
- B. Type5
- C. Type2
- D. Type1
- E. Type3
Answer: C
NEW QUESTION 178
When judging LSA is old or new, will use the serial number of the reference models and age parameters, which the following statements about the two parameters are correct? (Multiple choice)
- A. If the sequence number of the LSA reaches the end value Ox7FFFFFFF, the current router advertises the LSA whose age is 3600S
- B. When the router receives two LSAs with the same sequence number and the same checksum, the smaller the age, the better
- C. When the router receives an LSA, the age is set to 3600S, indicating that this LSA is unavailable
- D. Both the serial number and age parameters can determine the old and new LSA, the router will give priority to the sequence to participate in the teaching, the larger the better
Answer: A,D
NEW QUESTION 179
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