Question 1

In Round Robin mode, the device sends packets based on the number of defined bytes of each queue. The bandwidth ratio of each queue is the ratio of the number of defined bytes of the local queue to the total number of defined bytes of all queues.

Accepted Answer

Round Robin mode sends packets in a cyclic order, not based on the number of defined bytes. It treats each queue equally, regardless of the size or bandwidth ratio.

Question 2

When QoS is deployed on a network to improve the quality of some services, the quality of other services must deteriorate.

Accepted Answer

QoS prioritizes certain types of traffic over others, which can lead to reduced performance for lower-priority traffic.

Question 3

Congestion means that the service rate is reduced because of insufficient network resources. Congestion avoidance technologies include RED and WRED.

Accepted Answer

Congestion occurs when network resources are insufficient, reducing service rates. RED (Random Early Detection) and WRED (Weighted Random Early Detection) are technologies used to avoid congestion by managing packet loss and queue lengths.

Question 4

Which of the following statements regarding multicast routing are true? (Choose all that apply.)

Accepted Answer

Multicast routing protocols are designed to efficiently route data from one source to multiple receivers, forming a distribution tree. They can be categorized into intra-domain and inter-domain protocols. IGMP is not a multicast routing protocol but a protocol used by hosts and adjacent routers to establish multicast group memberships.

Question 5

OSPF runs on TCP protocol and uses TCP port number 179.

Accepted Answer

OSPF (Open Shortest Path First) is a routing protocol that operates directly over IP and does not use TCP or any port number. TCP port 179 is used by BGP (Border Gateway Protocol), not OSPF.

Question 6

Which of the following is a valid address within the IPv4 SSM group address range assigned by the IANA?

Accepted Answer

The IANA has assigned the 232.137.0.0/8 range for IPv4 SSM group addresses.

Question 7

On a Layer 2 switching network, devices forward data based on MAC addresses. Therefore, data filtering can be performed based on MAC addresses, and a firewall in transparent cannot filter out Layer 3 information in data packets.

Accepted Answer

The answer of On a Layer 2 switching network, devices...

Question 8

Which of the following causes will lead to a failure to establish BGP peer relationships?

Accepted Answer

BGP peer relationships rely on TCP connections, specifically on port 179. If an ACL blocks all TCP connections between two BGP neighbors, the BGP session cannot be established.

Question 9

Which of the following aspects should be considered for migration risk assessment? (Choose all that apply.)

Accepted Answer

These aspects are all important for migration risk assessment because they help to identify and quantify the risks associated with migration. Key risk positions are the positions that are most likely to be affected by migration, and risk impact scope is the extent to which migration will affect those positions. Risk impact time is the amount of time that migration will take to affect those positions, and loss caused by risks is the amount of money that will be lost as a result of migration.

Question 10

DHCP uses different types of packets to implement different functions. Which of the following is the function of the DHCP Offer packet?

Accepted Answer

The DHCP Offer packet is sent by the DHCP server in response to a DHCP Discover packet from a client, offering configuration parameters like an IP address.

Question 11

MPLS technology replaces IP forwarding with label switching. Which of the following encapsulation modes is used when MPLS runs on Ethernet networks?

Accepted Answer

Frame mode is used when MPLS runs on Ethernet networks, where labels are inserted between the Ethernet header and the IP header.

Question 12

Which of the following statements regarding Agile Controller guest account application mode is false?

Accepted Answer

The answer of Which of the following statements regarding Agile...

Question 13

MPLS uses LDP to provide different label distribution modes. Which of the following statements regarding LDP label distribution control modes are false? (Choose all that apply.)

Accepted Answer

LDP label distribution can be controlled in independent mode, and in independent mode, an LSR can send label mapping messages to the upstream router without waiting for label mapping messages from the next hop LSR.

Question 14

A DHCP server supports various types of address allocation policies to meet different requirements. Which of the following is not a correct address allocation policy?

Accepted Answer

Duplicated allocation is not a valid DHCP address allocation policy. The correct policies are automatic, dynamic, and manual allocation.

Question 15

MUX VLAN provides a mechanism for network resource control based on VLANs. Which of the following concepts do not belong to the MUX VLAN?

Accepted Answer

Guest VLAN is not a concept specific to MUX VLAN; it is generally used for providing network access to guests.

Question 16

Which of the following statements regarding the stateful inspection firewall is true?

Accepted Answer

Stateful inspection firewalls track the state of active connections and use this information to determine which network packets to allow through the firewall. They only need to match the first packet against a rule, and subsequent packets are matched using the state table.

Question 17

What is the default priority of the device in a VRRP group?

Accepted Answer

The default priority of a device in a VRRP (Virtual Router Redundancy Protocol) group is 100.

Question 18

The difference between an OSPF NSSA area and a stub area is that external routes can be imported into a NSSA area.

Accepted Answer

An OSPF NSSA (Not-So-Stubby Area) allows the import of external routes into the area using Type 7 LSAs, whereas a stub area does not allow external routes to be imported.

Question 19

The device installation procedure is as follows: Prepare tools -> Install mounting ears -> Install floating nuts and guide rails based on site requirements -> Install the device in the cabinet.

Accepted Answer

The procedure outlines a logical sequence of steps for installing a device, starting with preparation and ending with installation in the cabinet.

Question 20

LSRs use various label distribution control modes to set up LSPs. Which of the following statements is false?

Accepted Answer

The statement is false because in the Independent mode, an LSR distributes labels without waiting for a label mapping message from the egress device, regardless of the label advertisement mode.

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