H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 27

H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 27

1. Which of the following route selection mechanisms can adopt user-defined policies to determine data forwarding paths flexibly based on ACLs or packet lengths?

   • AS-path-filter
   • IP-prefix
   • Route-policy
   • Policy-based-route 

2. What are the functions of an IGMPv2 Query message? (Choose three.)

   • A router sends IGMPv2 Query messages to collect group memberships of receiver hosts. 
   • A router sends IGMPv2 Query messages to elect a querier.
   • If a router can periodically send IGMPv2 Query messages, it indicates that the router runs properly.
   • Based on IGMPv2 Query messages, receiver hosts can obtain the address of a querier and unicast Report messages to the querier.

3. What are the differences between the IGMP versions? (Choose two.)

   • IGMPv1/v2 cannot elect queriers but IGMPv3 can.
   • In IGMPv2/v3, members can actively leave groups, whereas in IGMPv1 members cannot actively leave groups.
   • IGMPv1/v2 do not support the SSM model but IGMPv3 supports.
   • IGMPv1/v2 do not support group-specific Query messages but IGMPv3 supports.

4. What is the maximum number of bits that can be used for subnetting, when the network address is a Class C address?

   • 6
   • 8
   • 12
   • 14

5. The most remarkable characteristic of OSPF is that it can support the link-state algorithm.

   • TRUE 
   • FALSE

6. Which of the following statements about multicast MAC addresses are true? (Choose three.)

   • The high-order 24 bits of a multicast MAC address are 0x01005e and the low-order 23 bits of a multicast MAC address are the same as the low-order 23 bits of a multicast IP address.
   • One multicast MAC address maps 32 IP multicast addresses.
   • Multicast MAC addresses are used at the link layer to identify receivers that are in the same multicast group.
   • One multicast MAC address maps only one IP multicast address.

7. IGMP interface group report information
   Ethernet6/1/1(40.1.1.1):

   

   The preceding information shows the entry status of an IGMP interface on Ethernet 6/1/1 on a router.
   Assume IGMP sends the group-and-source-specific Query message. Which of the following statements is true?

   • IGMP respectively sends two messages: The source carried in one of the messages is 20.1.1.56 with the S flag bit not set; the source carried in the other message is 20.1.1.57, with the S flag bit set to 1.
   • IGMP respectively sends two messages: The source carried in one of the messages is 20.1.1.56 with the S flag bit set to 1; the source carried in the other message is 20.1.1.57, with the S flag bit not set. 
   • IGMP sends one message carrying two sources 20.1.1.56 and 20.1.1.57, with the S flag bit set to 1.
   • IGMP sends one message carrying two sources 20.1.1.56 and 20.1.1.57, with the S flag bit not set.

8. Which of the following route selection tools can be used in “multiple” routing protocols, be configured with matching conditions, and be composed of if-match and apply clauses?

   • AS-path-filter
   • IP-prefix
   • Route-policy 
   • Community-filter

9. Which of the following protocols support default route advertisement by using commands? (Choose three.)

   • RIP
   • OSPF
   • BGP
   • Static

10. MPLS is a switching standard defined by the IETF. Which of the following devices exist on the MPLS network? (Choose two.)

    • LSR
    • LER
    • Label distribution router
    • Label transmit router

11. An ACL is a series of orderly rules composed of permit | deny clauses. Which of the following attributes cannot be used for defining an ACL rule?

    • Source address
    • Destination address
    • Port number
    • AS-Path 

12. The configurations of the defined route-policy Set-cost are as follows:

    

    Which of the following statements is true?

    • The route 10.1.0.0/16 matches node 10 and its cost is set to 300. 
    • The route 10.1.0.0/16 matching node 10 also matches node 20 subsequently and its cost is finally set to 200.
    • Costs of all routes will be set to 200.
    • All routes that fail to match node 10 will be denied.

13. Divide the network by using VLAN can (). (Choose two.)

    • Support more network layer protocols
    • Restrict the scope of broadcast domain
    • Increase the collision
    • Guarantee the security 

14. Which statements regarding the PVID on the access interface are true? (Choose three.)

    • If a packet without VLAN tag is received, the interface adds a VLAN tag to the packets and sets the VID as the default VLAN ID.
    • If a packet with VLAN tag is received, the interface compares the VLAN ID in the tag with the default VLAN ID. If they are the same, the interface forwards the packets; otherwise, the interface discards the packets.
    • When the interface sends a packet with a VLAN tag that contains the default VLAN ID, the system removes the VLAN tag of the packet, and then forwards the packet.
    • PVID on access interface is set to 1 by default and can’t be changed.

15. Which of the following is the multicast distribution tree maintained by PIM-DM?

    • SPT 
    • CBT
    • RPT
    • STP

16. Which of the following route entries match IP-Prefix defined below? (Choose two.)

    ipip-prefix test index 10 permit 192.168.0.0 16 greater-equal 24 less-equal 28

    • 192.168.1.0/24 
    • 192.10.2.0/24
    • 192.168.3.0/25 
    • 192.168.4.0/30

17. What is the range of VLAN IDs?

    • 1~1000
    • 0~4095 
    • 0~4096
    • 1~4096

18. What is the function for the command “InterfaceVlan-interface Vlan-ID”?

    • Create a VLAN
    • Create or enter VLAN interface view 
    • Configure a VLAN for port
    • Configure PVID

19. Which of the following route entries matches ACL 2001 that is defined below?

    

    • 1.2.3.0/24,1.2.4.0/24, 1.2.5.0/24, 1.2.6.0/24,1.2.7.0/24,1.2.8.0/24
    • 1.0.0.0/8,1.2.0.0/16,1.2.3.0/24,1.2.4.0/24, 1.2.5.0/24, 1.2.6.0/24,1.2.7.0/24,1.2.8.0/24
    • 1.2.3.0/24,1.2.5.0/24,1.2.7.0/24 
    • 1.2.0.0/16,1.2.4.0/24,1.2.6.0/24,1.2.8.0/24

20. The route selection tool route-policy can filter and set BGP attributes based on pre-defined conditions. Therefore, this tool is commonly used to define policies for BGP peers and often used in route generation.

    • True 
    • False