Question 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?

Accepted Answer

Policy-based routing (PBR) allows for user-defined policies to determine data forwarding paths based on criteria like ACLs or packet lengths.

Question 2

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

Accepted Answer

192.168.1.0/24 and 192.168.3.0/25 are within the range of 192.168.0.0/16 and have prefix lengths between 24 and 28.

Question 3

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

Accepted Answer

IGMPv2 Query messages are used by routers to collect group memberships (A), help in the election of a querier (B), and their periodic sending indicates proper router operation (C).

Question 4

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

Accepted Answer

RIP, OSPF, and BGP all support default route advertisement through specific configuration commands. Static routes, however, do not use a protocol for advertisement; they are manually configured.

Question 5

VLANs isolate broadcast domains, eliminate broadcast storms, and enhance data security.

Accepted Answer

VLANs (Virtual Local Area Networks) segment a network into separate broadcast domains, reducing the chance of broadcast storms and enhancing security by isolating traffic within each VLAN.

Question 6

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

Accepted Answer

PIM-DM (Protocol Independent Multicast - Dense Mode) uses a Source-based distribution tree, also known as a Shortest Path Tree (SPT), for multicast routing.

Question 7

How many bits of the multicast MAC address are used for multicast IP address mapping?

Accepted Answer

The answer of How many bits of the multicast MAC...

Question 8

The IGMP protocol runs between a host and its directly connected multicast router.

Accepted Answer

IGMP (Internet Group Management Protocol) is used by hosts and adjacent routers on IPv4 networks to establish multicast group memberships.

Question 9

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

Accepted Answer

LSR (Label Switch Router) and LER (Label Edge Router) are devices that exist on an MPLS network. LSRs are responsible for forwarding packets based on labels, while LERs are responsible for adding and removing labels at the edge of the MPLS network.

Question 10

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?

Accepted Answer

Route-policy is a versatile tool that can be used across multiple routing protocols. It allows for complex matching conditions and can be composed of if-match and apply clauses to control route selection and manipulation.

Question 11

The configurations of the defined route-policy Set-cost are as follows:  Which of the following statements is true?

Accepted Answer

The answer of The configurations of the defined route-policy Set-cost...

Question 12

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

Accepted Answer

A) On an access interface, if a packet without a VLAN tag is received, the interface adds a VLAN tag with the PVID (Port VLAN ID) as the default VLAN ID.  B) If a packet with a VLAN tag is received, the interface checks if the VLAN ID matches the PVID. If they match, the packet is forwarded; otherwise, it is discarded.  C) When sending a packet with a VLAN tag that matches the PVID, the tag is removed before forwarding, as access ports typically send untagged frames.

Question 13

Which of the following statements about comparison between ACL and IP-Prefix are true? (Choose two.)

Accepted Answer

ACL (Access Control List) can be used for both data packet filtering and route filtering, while IP-Prefix is primarily used for route filtering.

Question 14

Which of the following routers have multicast routing entries even when there is no receiver on the network? (Choose two.)

Accepted Answer

The source's DR and the RP always have multicast routing entries, even when there is no receiver on the network. The source's DR is responsible for forwarding multicast traffic to the RP, and the RP is responsible for forwarding multicast traffic to all receivers.

Question 15

RSTP has all functions of STP and it is backwards compatible with STP.

Accepted Answer

RSTP (Rapid Spanning Tree Protocol) includes all the functions of STP (Spanning Tree Protocol) and is designed to be backwards compatible, allowing it to interoperate with STP in a network.

Question 16

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

Accepted Answer

The maximum number of bits that can be used for subnetting, when the network address is a Class C address, is 6. This is because the Class C network mask is 255.255.255.0, which means that the first 24 bits of the IP address are used to identify the network, and the last 8 bits are used to identify the host. Therefore, the maximum number of bits that can be used for subnetting is 8.

Question 17

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.

Accepted Answer

The route-policy tool is used in BGP to filter and set attributes based on conditions, allowing for the definition of policies for BGP peers and influencing route generation.

Question 18

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

Accepted Answer

The answer of Divide the network by using VLAN can...

Question 19

In IPv4, which of the following is the SSM address range allocated by the IANA?

Accepted Answer

The SSM address range allocated by the IANA in IPv4 is 239.0.0.0/8.

Question 20

What is the range of VLAN IDs?

Accepted Answer

The range of VLAN IDs is from 0 to 4095, where 0 and 4095 are reserved, leaving 1 to 4094 for actual VLAN use.

Exam 5: HCNP-R&S Fast Track (Huawei Certified Network Professional - Routing & Switching Fast Track)