Huawei H12-811_V1.0 Exam Practice Test Instant Access

Question 1

On Huawei AR G3 Series routers, which authentication modes does AAA support?

ARadius

BNone

CLocal

D802.1X

Answer : A, B, C, D

Detailed

Huawei AR G3 series routers support various AAA authentication modes including RADIUS, local authentication, no authentication (None), and 802.1X. These modes offer flexibility in how users are authenticated for network access depending on the security requirements.

Question 2

Network Address and Port Translation (NAPT) allows multiple private IP addresses to be mapped to the same public IP address through different port numbers. Which of the following statements about port numbers in NAPT is true?

AOnly the port number range needs to be configured.

BThe mappings between port numbers and private IP addresses must be manually configured.

CAn ACL is required to allocate port numbers.

DNo port number needs to be configured.

Answer : A

Detailed

In NAPT, port numbers are dynamically assigned as traffic flows through the router. The port number range is automatically selected, and manual configuration of each mapping is not required. NAPT dynamically uses different ports for mapping private IP addresses to a single public IP address.

Question 3

If the value of the "Type/Length" field of an Ethernet data frame is 0x0800, the length range of the upper-layer packet header carried by the data frame is from 20B to 60B.

ATRUE

BFALSE

Answer : B

Detailed

The Type/Length field value of 0x0800 indicates that the upper-layer protocol is IPv4. However, the length of the IPv4 header can range from 20 to 60 bytes, not the length of the entire upper-layer packet. The field refers to the type of the encapsulated protocol, and the length is not constrained to the header alone.

Question 4

The Priority field in a VLAN tag can be used to identify the priority of a data frame. What is the value range of the field?

A0 to 3

B0 to 15

C0 to 7

D0 to 63

Answer : C

Detailed

The Priority Code Point (PCP) field in an 802.1Q VLAN tag is 3 bits long, which gives it a value range of 0 to 7. This field is used to indicate the priority of the frame, with higher values indicating higher priority.

Question 5

By referring to the topology and the configurations of G0/0/1 interfaces on LSW1 and LSW2 shown in the figure, it can be determined that data frames tagged with VLAN 10 can be normally forwarded between LSW1 and LSW2.

ATRUE

BFALSE

Answer : A

Detailed

Based on the provided configuration, the interfaces on LSW1 and LSW2 are both configured as trunk ports that allow VLAN 10 to pass. This ensures that data frames tagged with VLAN 10 can be transmitted and received across the trunk link between LSW1 and LSW2 without issues.

Question 6

Which of the following statements is true about the edge port in RSTP?

AInterconnected ports between switches must be configured as edge ports.

BEdge ports participate in RSTP calculation.

CThe edge port can directly transition from the Disabled state to the Forwarding state.

DThe edge port discards the received configuration BPDUs.

Answer : C

Detailed

An edge port in RSTP (Rapid Spanning Tree Protocol) is designed to immediately transition to the forwarding state without participating in the spanning tree calculation. This allows for quicker convergence and is suitable for ports connected to end devices (not to other switches).

Question 7

How many port states are involved in RSTP?

Answer : D

Detailed

In RSTP, there are three port states: Discarding, Learning, and Forwarding. These states replace the five traditional STP states by combining them to optimize network convergence.

Huawei H12-811_V1.0 HCIA-Datacom V1.0 Exam Practice Test