Huawei Huawei Certifications H12-831 Questions & Answers

• Question 131:

  Which of the following statements is false when troubleshooting the dual-active failure of a VRRP backup group?

  A. No need to check deliveryVRRPWhether the switch port of the advertisement message is in the sameVLAN

  B. need to check the interfaceVRRPGroupIDIs it the same

  C. Interface needs to be checkedIPWhether the address is in the same network segment

  D. need to checkVRRPgroup of virtualIPIs the address the same

  Correct Answer: A

• Question 132:

  In BGP4+, what is the content of the next hop network address field carried in the P_REA, CHLRI attribute in the Update packet?

  A. Can only be a global unicast address

  B. can just be a link-local address

  C. Can carry link-local addresses and global unicast addresses at the same time

  D. Only link-local addresses

  Correct Answer: C

• Question 133:

  As shown in the figure, on the R1 router, network administrator A sends the routing entry to R2 through the routing policy

  After modifying the MED value, you can control the path of traffic entering the AS100

  

  A. True

  B. False

  Correct Answer: A

• Question 134:

  Regarding the description of the encapsulation format of labels in MPLS, the correct one is

  A. MPLSThe total length of a single label is4bytes(32bits)

  B. For Ethernet,PPPpacket, the tag stack is like 'shim*--between the L2 header and the data: yesVLAN tagTime,MPLShead on the ether head withVLAN tagbetween

  C. in the labelSfield:lbit,Used to identify whether the label is the bottom label of the stack, the value is1is indicated as the penultimate layer label

  D. in the labelTTLfields andIPgroupedTTL( Time To Live.,time-to-live) is similar in meaning and also has the effect of preventing loops

  Correct Answer: AD

• Question 135:

  According to this picture, Xinmen can be judged?

  

  A. R1access172.16.1.4.need to go through2hop router

  B. R1access172.16.1.4,need to go through4hop router

  C. R1access172.16.1.4have2an equivalent path

  D. R1access172.16.1.4have4an equivalent path

  Correct Answer: AC

• Question 136:

  As shown in the figure, Sitel and Site2 need to achieve mutual access through the operator's BGP/MPLS IPVPN. A known The public network tunnel between PE1 and PE2 has been established (the label information is shown in the figure), and PF1 has The 192.168.1.0/24 network segment route is advertised to PE2 through the MP.JIBGP neighbor relationship, and the route learning is normal. When grabbing between P and PE1, when Site2 accesses the 192.168.1.0/24 data of Sitel, the

  outermost label What should the sign be?

  

  FEC In/Out label 1.1.1.1/32 6662/3

  A. 6661

  B.

  C. 6662

  D. 8888

  Correct Answer: D

• Question 137:

  What is the meaning of ipv6 enable topology ipv6 in IS-IS protocol view?

  A. SPFCalculated atIPv4,IPv6in the topology of the

  B. has no meaning

  C. not supportIPv6ofSPFcalculate

  D. IPv4,IPv6use the same topologySPFcalculate

  Correct Answer: A

• Question 138:

  Please pair the following DHCP attack types with corresponding explanations.

  A. DHCPstarvation attack-3 DHCPPhishing attack man-in-the-middle attack-2 DHCPPacket flood attack-4

  B. DHCPstarvation attack-2 DHCPPhishing attack-3man-in-the-middle attack-1 DHCPPacket flood attack-4

  C. DHCPstarvation attack-1 DHCPPhishing attack-3man-in-the-middle attack-2 DHCPPacket flood attack-4

  D. DHCPstarvation attack-4 DHCPPhishing attack-3man-in-the-middle attack-2 DHCPPacket flood attack-1

  Correct Answer: C

• Question 139:

  What is the meaning of display current-configuration I include vlan command?

  A. View eachVLANphysical interface information bound to the

  B. See what's currently createdVLAN

  C. CheckVLANIFinterfaceIPaddress

  D. View all included"VLAN"Configuration of keywords

  Correct Answer: D

• Question 140:

  As shown below:

  

  IR2] ad 2000 [R2-ad-basic-2000]rule deny [R2-ad-basic-2000]quit # [R2] ospf [R2-ospf?]area 1 [R2-ospM-area-0.0.0.1] filter 2000 import [R2-ospf-1-area-0.0.0,1] quit [R2-ospf-1] default-route-advertise always

  A. Area2containsType5LSAflood

  B. Area2no insideType3 LSAflood

  C. ArealcontainsType5 LSAflood

  D. Arealno insideType3 LSAflood

  Correct Answer: D