H12-831-ENU Dumps PDF New [2024] Ultimate Study Guide
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NEW QUESTION # 155
Configure IS-IS IPv6 enable on the interface. What is the meaning of this command?
- A. Activate IPv6 IS-IS process 10 on the interface
- B. Activate IPv6 IS-IS process 3 on the interface
- C. Activate Pv6 IS-IS process 1 on the interface
- D. Activate IPv6 IS-IS process 2 on the interface
Answer: C
NEW QUESTION # 156
According to this figure, what can we know? (Multiple choice)
- A. R1 does not have access to the route of 172.17.1.5
- B. R1 has no problem accessing the path of 172.17.1.5
- C. R1 has a route to 172.17.15
- D. There is a loop when R1 accesses 172.17.1.5
Answer: C,D
NEW QUESTION # 157
In BGP/MPLS IP VPN, OSPF multi-instance process uses DN bits to prevent Type5 LSA loops.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 158
In BGP4+, what is the content of the next hop network address field carried by the AP_REACH_NLRI attribute in the Update message?
- A. Can only be a global unicast address
- B. Can be just a link-local address
- C. Can carry link-local addresses and global unicast addresses at the same time
- D. Only link-local addresses
Answer: C
NEW QUESTION # 159
OSPF is a very mature protocol. In the case of conventional networking and correct configuration, route calculation is generally not wrong. Which of the following reasons may cause OSPF neighbors to fail to reach the Full state? (Multiple choice)
- A. Interface OSPF MTU configuration is different
- B. The OSPF network types of the two links are inconsistent
- C. The link is working abnormally
- D. The router IDs of the neighbors are the same
Answer: A,B,D
NEW QUESTION # 160
Which of the following statements about MUX VLANs are true? (Multiple choice)
- A. Separate VLAN can communicate with all VLANs in MUX VLAN
- B. Each Group VLAN must be bound to a Principal VLAN
- C. Each Separate VLAN must be bound to a Principal VLAN
- D. The Principal VLAN can communicate with all VLANs in the MUX VLAI
Answer: B,C,D
NEW QUESTION # 161
The definition of OPX is?
- A. Total Cost of Ownership
- B. Operating costs
- C. Maintenance costs
- D. Operation and maintenance costs
Answer: B
NEW QUESTION # 162
Which LSAs in OSPFv3 can be flooded within an area? (Multiple choice)
- A. Inter-Area-Router-LSA
- B. Intra-Area-Prefix-LSA
- C. Link-LSA
- D. Inter-Area-Prefix-LSA
Answer: A,B,D
NEW QUESTION # 163
What information about a packet can be marked or remarked? (Multiple choice)
- A. MAC Address information
- B. IP Source
- C. Any information in the message
- D. IP DSCP
Answer: A,B,D
NEW QUESTION # 164
Which of the following statements is true about the multicast addresses used by OSPFv3? (Multiple choice)
- A. All OSPF routers use FF08
- B. DR router uses FF08
- C. DR router uses FF02
- D. All OSPF routers use FF02
Answer: C,D
NEW QUESTION # 165
The preliminary investigation of the cutover project is mainly to communicate and coordinate with customers and other participants, and collect network information for analysis.
- A. True
- B. False
Answer: A
NEW QUESTION # 166
In order to improve the stability of STP operation, the network administrator decides to configure some features or protection mechanisms of STP on the switch. Which of the following configuration ideas is correct?
- A. Configure the user's access port as an edge port to prevent users from accessing the switch on this port
- B. Configure Root Guard on the user's access port to ensure that the user cannot access a high-priority switch
- C. After configuring BPDU Guard, the switch will check the validity of each BPDU received to prevent forged BPDU attacks
- D. Configure Loop Guard where there is a loop in the network to ensure that the loop is always blocked
Answer: B
NEW QUESTION # 167
Which of the following descriptions about the LDP Sessioni establishment process is correct? (Multiple choice)
- A. The active party will send an Advertisement Message to negotiate relevant parameters for establishing an LDP session, including the LDP protocol version, label distribution method, Keepalive retention timer value, maximum PDU length, and label space.
- B. If the passive party can accept the relevant parameters, it will send an InitializationMessage and a Keepalive message to the active party.
- C. If the Hello Messager does not carry the Transport Address
- D. Two LSRs send Hello messages to each other. The Hello message carries the transport address, and the party with the larger transport address acts as the active party and initiates the establishment of a TCP connection.
Answer: B,C,D
NEW QUESTION # 168
According to this figure, can we judge whether R4 is on?
- A. 2 equivalent default routes
- B. 4 equivalent default routes
- C. 2 default routes with different costs
- D. 1 default route
Answer: A
NEW QUESTION # 169
A DHCP server can use different address ranges to assign to clients. Which description is correct about assigning addresses? (Multiple choice)
- A. In the DHCP address pool, the IP address that can be allocated is searched sequentially, that is, the IP address found first
- B. It can be the IP address that the client used to conflict with other clients
- C. It can be the IP address statically bound to the client MAC address in the database of the DHCP server
- D. It can be the IP address used by the client, that is, the address of the Requested IP Addr Option in the DHCP DISCOVER message sent by the client
- E. Regarding the IP addresses that are over-lease and conflicting IP addresses queried by the DHCP server, if an available IP address is found, it can be assigned
Answer: A,C,D,E
NEW QUESTION # 170
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