[2022] Verified H12-261-ENU Dumps Q&As - 1 Year Free & Quickly Updates
Latest 2022 Realistic Verified H12-261-ENU Dumps - 100% Free H12-261-ENU Exam Dumps
NEW QUESTION 282
As shown, ISIS neighbor relationship between R1 and R2 has just been established, database synchronization process between R1 and R2, which of the following statements is correct?
- A. The packet sent by R1 to R2 is a LSP packet.
- B. The packet sent by R1 to R2 is a PSNP packet.
- C. The packet sent by R1 to R2 is a CSNP packet.
- D. The packet sent by R1 to R2 is a Hello packet.
Answer: C
NEW QUESTION 283
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?
- A. 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.
- B. MPLS BGP VPN uses two-layer label public network label (also known as outer label) and private network label (also known as inner label).
- C. By default, the router assigns the same label value to all VPNv4 routes destined for the peer PE.
- D. The export PE uses the inner label when determining which export CE the message should be sent to.
Answer: C
NEW QUESTION 284
If the value of the Option field in the 0SPFv3 Hello packet sent by the GigabitEthermet 0/0/0 interface on the router is 0x000013, which of the following descriptions are correct? (Multiple Choice)
- A. GigabitEthernct0/0/0 port of Router A belongs to the NSSA area.
- B. The router is an OSPFv3 device with forwarding capability.
- C. Gigabit/thernet0/0/0 port of Router A will participate in IPv6 route calculation.
- D. Router A supports AS-External-LSA flooding
Answer: B,C,D
NEW QUESTION 285
The router HW1 exists as an MPLS LSR router in the network of the operator HW. The router receives a packet carrying a label, but the label entry does not exist in its LFIB. So how does the router handle the packet?
- A. Router HW1 will strip the label and find the IP destination address of the FIB.
- B. Router HW1 uses LDP to create an LSP and creates a new path for the label carried in the packet in the LFIB.
- C. Router HW1 will forward the packet using the default label.
- D. Router HW1 will discard the packet.
Answer: D
NEW QUESTION 286
Which of the following is a single package attack? (Multiple choice)
- A. DDoS attack
- B. Malformed packet attack
- C. Scanning detection attacks
- D. Special control packet attack
Answer: B,C,D
NEW QUESTION 287
After the IS-IS area authentication is configured, which of the following IS-IS packet carries the authentication information?
- A. IS-IS Leve-2 SNP and LSP
- B. IS-IS Level-2 Hello PDU
- C. IS-IS Level-1 SNP and LSP
- D. IS-IS Leve -1 Hello PDU
Answer: C
NEW QUESTION 288
Which of the following description is wrong about the VPNv4 address?
- A. By default, the PE does not perform vpn-target filtering on the received VPNv4 routes.
- B. The VPNv4 address has a total of 12 bytes, including an 8-word route identifier RD (Route Distinguisher) and a 4-byte IPv4 address prefix.
- C. Before the local PE advertises the VPNv4 route learned from the site directly connected to itself to other PEs, it sets the Target attribute for these routes and advertises it as a BGP extended community attribute along with the route.
- D. When BGP advertises reachable and unreachable VPNv4 routes, it carries the RD attribute.
Answer: A
NEW QUESTION 289
If OSPF is running on the network, the non-backbone area in the OSPP area is configured as the LSA with the ls-id of 0.0.0.0 in the Totally Stub Totally Stub area. What type of LSA is the LSA?
- A. LSA5
- B. LSA3
- C. LSA1
- D. LSA2
Answer: B
NEW QUESTION 290
Which of the following statements about BGP attributes are correct?
- A. A path can only have one Community attribute value.
- B. The number of the neighboring AS is displayed on the right side of the As Path list of the BGP routing entry.
- C. The Local_Pref attribute is exchanged only between EBGP peers and is not advertised to the other ASs.
- D. When a route learned from an EBGP peer is advertised to an IBGP peer, the BGP speaker does not change the Next_Hop attribute of the route.
Answer: D
NEW QUESTION 291
In addition to stateless address autoconfiguration, IPv6 devices can also obtain information such as addresses, gateways, and DNS through DHCPv6.
- A. True
- B. False
Answer: B
NEW QUESTION 292
Which of the following are the techniques for improving MPLS BGP VPN reliability? (Multiple choice)
- A. VPN GR
- B. Configure CE dual-homing networking on the access layer.
- C. Private network IP routing FRR between the PE and CE
- D. VPN FRR
Answer: A,B,C,D
NEW QUESTION 293
Which of the following description is correct about the process of sending and receiving data frames in the Access mode of the switch interface?
- 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 sending.
- C. When the data frame enters the switch interface, the switch learns the destination MAC address in the data frame.
- D. When receiving a tagged data frame directly discards in Access mode
Answer: B
NEW QUESTION 294
As shown in the figure, the IPSEC VPN is established between the branch and the headquarters using redundant links. At the same time, URPF is enabled for the traffic from the branch 1 on Router_B. Which of the following options is correct? (Multiple Choice)
- A. When using IPSEC multi-link redundancy backup, RPF strict mode can be used when enable URPF function on the physical interface.
- B. When using IPSEC multi-link redundancy backup, URPF strict mode can be used when enable URPF function on the tunnel interface.
- C. When using IPSEC main-link redundant backup, URPF loose mode is recommended when the URPF function is used on the physical interface.
- D. When using IPSEC main-link redundant backup, URPF strict mode can be used when the URPF function is used on the physical interface.
Answer: B,C
NEW QUESTION 295
View the details of all VPN instances on a network device. The results are as follows. Which of the following statements are incorrect? (Multiple Choice)
- A. GigabitEthernet 1/0/0 interface is bound to the VPN-Instance vpna.
- B. The device will assign a label to each route of the VPN-Instance vpna.
- C. VPN-Instance vpna will not receive VPN routes with RT 2:1
- D. The total number of instances of the IPv6 address cluster enabled in the VPN configured on the local end is 1.
Answer: B,D
NEW QUESTION 296
In an MPLS IBGP VPN environment, if LDP distributes labels only through BGP, the MPLS labels of the packets are at most two layers.
- A. True
- B. False
Answer: A
NEW QUESTION 297
Which of the following statements about RADIUS is correct?
- A. MAC authentication does not require a username and password, so you cannot use RADIUS to authenticate a user.
- B. RADIUS authentication and Portal authentication cannot be used together. Because Portal authentication is usually used, the Portal server can be used to authenticate users.
- C. RADIUS protocol authentication, authorization, and audit separation.
- D. RADIUS supports both wired and wireless access methods.
Answer: D
NEW QUESTION 298
The default type of router in ISIS is Level-2.
- A. True
- B. False
Answer: B
NEW QUESTION 299
In the packet forwarding by the way of inter-AS VPN-Option B, the two ASBRs exchange the LSP labels of the public network.
- A. True
- B. False
Answer: B
NEW QUESTION 300
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