[Oct 27, 2021] H12-261-ENU Practice Exam Dumps - 99% Marks In Huawei Exam
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NEW QUESTION 38
In traffic policing, the dual-bucket dual-speed is used. The number of tokens in the C bucket is TC, and the number of tokens in the P bucket is TP. When a message of length B enters, which of the following statements are correct? (Multiple Choice)
- A. If TP-B>0 and TC-B<0, the message is marked as green
- B. If TP-B>0 and TC-B<0, the message is marked as yellow
- C. If TP-B<0 and TC-B<0, the message is marked in red
- D. If TP-B>0 and TC-B>0, the message is marked as green
Answer: B,C,D
NEW QUESTION 39
Which of the following statements are NOT true regarding the TCP sliding window? (Multiple Choice)
- A. The size of the sliding window can only increase or stay the same.
- B. The size of initial window is advertised by the sender.
- C. TCP sliding window allows the transmission of multiple frames before waiting for an acknowledgement.
- D. The sender need not transmit a full window's worth of data.
- E. If the retransmission timer expires but the sender has not received the acknowledgement, it will retransmit the unacknowledged data.
Answer: A,B
NEW QUESTION 40
Which of the following statement about the security association SA in IPsec is wrong?
- A. Use display IPsec to view information about encryption algorithms, traffic, and other information used between another IPsec peer.
- B. There must be a two-way SA between IPsec peers to establish an IPsec VPN connection.
- C. 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).
- D. IPsec only supports the use of symmetric encryption algorithms to encrypt data.
Answer: C
NEW QUESTION 41
An existing switch runs RSTP. If the network topology changes, what happens to the Layer 2 forwarding entries learned automatically by the switch?
- A. If the aging time is set to 15 seconds, the entries that exceed the aging time will be deleted.
- B. Other entries are deleted except the entries related to the edge port and the entries related to the port that receives the TC message.
- C. Only entries related to the port that received the TC message will be deleted.
- D. All entries are deleted
- E. Other entries are deleted except the entries related to the edge port.
Answer: B
NEW QUESTION 42
As shown in the figure, R1, R2, and R3 run OSPF at the same time and announce their respective loopbacks. Which of the following description is wrong?
- A. You can use the filter import command to filter the loopback route of R3 in Area0.
- B. You can use the filter-policy export command to filter the loopback route of R3 in R2.
- C. You can use the filter export command to filter the loopback route of R3 in R2.
- D. You can use the filter-policy import command to filter the loopback route of R3 in R1.
Answer: B
NEW QUESTION 43
Regarding the Stub area and the NSSA area of OSPF, the wrong statement of the following is _____.
- A. Both the Stub area and the NSSA area are allowed to inject Type 3 LSA.
- B. Stub area and NSSA area are not allowed to inject Type 4 LSA.
- C. Type 7 LSA is not allowed in the Stub area, but Type 7 LSA is allowed in the NSSA area.
- D. Type 5 LSA is not allowed in the Stub area, but Type 5 LSA is allowed in the NSSA area.
Answer: D
NEW QUESTION 44
Regarding BGP route filtering, which of the following description is wrong?
- A. For a locally advertised route, configure a routing policy. The policy takes effect before the route is added to the BGP routing table.
- B. In the same node of Route-Policy, the relationship of multiple if-match clauses for different attributes is "OR".
- C. The filtering relationship between the nodes of the Route-Policy is "OR", that is, the Route-Policy can be passed with a node filter only.
- D. When receiving a route from a BGP peer, perform a routing policy to filter unwanted BGP routes. These routes are not added to the local BGP routing table.
Answer: A,B
NEW QUESTION 45
What is the main reason why RSTP converges faster than STP?
- A. RSTP increases the type of port status
- B. RSTP is not based on timer convergence
- C. RSTP has a smaller timer
- D. RSTP has less overhead
Answer: B
NEW QUESTION 46
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 through the EBGP neighbor, or the prefix is learned locally through the network or route.
- B. 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.
- C. The prefix is learned by other BGF neighbors, or the prefix is locally learned through network or route introduction.
- D. Presences existing in routing shows
- E. The prefix is learned through the EBGP neighbor, or the prefix is learned from the RR.
Answer: A
NEW QUESTION 47
The LAND attack is performed by the attacker sending a source address and a destination address to the destination host as the destination host. The source port and the destination port are the same SYN packet. When the receiver waits for the final ACK packet from the sender, the connection is always in a semi-connected state, resulting in waste of limited TCP resources at the receiving end.
- A. True
- B. False
Answer: B
NEW QUESTION 48
When deploying LLQ, you need to configure bandwidth parameters. What is the meaning of bandwidth parameters?
- A. This parameter is an option because LLQ always takes precedence over other queues
- B. This parameter should be as small as possible. It means that the bandwidth is always reserved, even if LLQ is used, this parameter will reduce the available bandwidth of the interface.
- C. It indicates that the reference CR is used to calculate the burst size of the built-in policer token bucket.
- D. Provide a built-in policer to limit the maximum available bandwidth of low latency queues during congestion
Answer: D
NEW QUESTION 49
If the OSPF protocol is running on the network, configure the non-backbone area in the OSPP area as the LSA with the ls-id of 0.0.0.0 in the Totally Stub Totally Stub area. Which LSA does the LSA belong to?
- A. LSA5
- B. LSA3
- C. LSA1
- D. LSA2
Answer: B
NEW QUESTION 50
The topology diagram and configuration are as follows. Now hope that there are no detailed routing entries of 10.6.3.3/32 in the R1 routing table. Which of the following statements can achieve this requirement? (Multiple Choice)
- A. Configure route summarization on R3 and summarize the routes to 10.0.0.0/16.
- B. Configure filter-policy on R2 and apply it to the export direction through ACL matching 10.0.0.3/32.
- C. Configure route summarization on R2 and summarize the routes to 10.0.0.0/16.
- D. Configure filter-policy on R1 and match the ACL to 10.0.0.3.3/32 and apply it in the import direction.
Answer: A,D
NEW QUESTION 51
The following topology is available, and based on this analysis, the following statements which are correct?
- A. The routing entries of 10.0.2.2/32 and 10.0.3.3/32 in the IP routing table of R1.
- B. Because R2 does route aggregation, only the routing entry of 10.0.0.0/16 exists in the IP routing table of R1.
- C. The routing entries of 10.3.3.3/32 and 10.0.0.0/16 exist in the IP routing table of R1.
- D. The routing entries of 10.0.2.2/32 and 10.0.0.0/16 in the IP routing table of R1.
Answer: C
NEW QUESTION 52
If the PPP link between R1 and R2 is shown, and the direct connection port is not on the same network segment, but the R1 and R2 direct connection ports can communicate, and the Ethernet link cannot communicate under the same IP planning, what is the reason? (Multiple choice)
- A. R1 and R2 are connected to the POS port, and the 24-bit subnet route of the direct connection port of the other party is learned through IPCP.
- B. R1 and R2 are connected to the POS port, and the 32-bit host route of the direct connection port of the other party is learned through IPCP.
- C. The data packets of the interconnected POS interface of R1 and R2 do not need to encapsulate the Ethernet header, and do not need to use ARP to request the MAC address.
- D. The interconnected POS port of R1 and R2 learns the MAC address of the peer interface through LCP, and does not require the ARP request MAC address.
Answer: B,C
NEW QUESTION 53
Which of the following statement about HTTPS is wrong?
- A. HTTPS secures access to data by using SSL VPN.
- B. When using HTTPS to access a website, if the user's browser does not recognize the digital certificate of the website, the website cannot be accessed.
- C. If the HTTPS traffic contains a virus, the router cannot directly detect the virus using IPS technology.
- D. HTTPS protocol uses TCP port 443 by default.
Answer: A
NEW QUESTION 54
About the description of the process of sending and receiving data frames in the Access mode of the switch interface, which is correct?
- A. Only receive unlabeled data frames in Access mode
- B. In the Access mode, the VLAN tag of the data frame will be stripped off when sent.
- C. When the data frame enters the switch interface, the switch learns the destination MAC address in the data frame.
- D. Directly discards when receiving a tagged data frame in Access mode
Answer: B
NEW QUESTION 55
Huawei's two switches, SWA and SWB, are connected through seven Ethernet ports and are configured with static link aggregation. The corresponding ports on the switch SW are Ethernet 1/0/2, Ethernet 1/0/3, Ethernet 1/0/4, and Ethernet 1/0/5, Ethernet 1/0/6, and Ethernet 1/0/7. The configuration mode is configured in the order of the ports. If the switch SWA and SWB support only 6 ports in each aggregation group.
- A. Ethernet1/0/7 Unselected port with consistent port configuration
- B. In the case that the configurations of the ports are the same, the SWA randomly selects one of the seven ports as the aggregation group Unselected port.
- C. Ethernet1/0/6 Unselected port with consistent port configuration
- D. Ethernet1/0/1 Unselected port when the configurations of the ports are the same
Answer: A
NEW QUESTION 56
Which of the following description is correct about the ISIS LSP fragmentation extension?
- A. The fragmentation extension of ISIS is equally valid for the Helio package.
- B. Enable the lSIS router to generate more LSP fragments to carry more ISIS information.
- C. ISIS fragmentation extension is achieved by adding virtual systems, which can be expanded to up to 1000 virtual systems.
- D. The maximum number of fragments that an ISIS router can generate is 1024.
Answer: B
NEW QUESTION 57
Which of the following description is true about the ISIS LSP fragmentation extension?
- A. ISIS routers can generate up to 1024 shards.
- B. ISIS's fragmentation extension is equally valid for Hello packets.
- C. ISIS's fragmentation extension is achieved by adding virtual systems that can scale up to 1000 virtual systems.
- D. Enable the ISIS router to generate more LSP fragments to carry more ISIS information.
Answer: D
NEW QUESTION 58
About the description of CHAP authentication function in the PPP protocol, which of the following are correct? (Multiple Choice)
- A. If the authenticator does not have a username, the password cannot be configured on the authenticated interface.
- B. The user name must be configured under the authenticated interface of CHAP authentication.
- 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: B,C,D
NEW QUESTION 59
To display the routing table of router R1, the "display ip routing-table" command was issued. Router R1 is running OSPF.
Which one of the following statements is true regarding the OSPF information in a routing table?
- A. A route that has been imported into OSPF can only be represented with an "O_ASE" designation.
- B. All LSA types have unique designations in the IP routing table.
- C. Type-7 LSAs display routes are imported into OSPF from another process, and are indicated by an "OSPF" marking.
- D. Routes that are within an area (intra-area) are marked with an "O_IA" in the routing table.
- E. A routing designated with only an "O_ASE" represents either a type-1 or type-2 LSA.
Answer: A
NEW QUESTION 60
The interface Serial0 of an existing router is in OSPF area 1, and the interface Serial0 is set to the Silent interface, so what effect does this setting have?
- A. OSPF establishes available adjacencies through this interface.
- B. OSPF will receive routing updates from neighbors
- C. OSPF does not establish any adjacencies through the interface.
- D. OSPF does not add routes learned from the interface to the local routing table.
Answer: C
NEW QUESTION 61
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