Huawei HCIP-Routing&Switching-IENP(Huawei Certified ICT Professional-Improving Enterprise Network Performance) - H12-222 Exam Practice Test

A. FALSE

B. TRUE

A. MPLS provides two processing modes on the TTL field: 1. TTL in the MPLS header copies the IP

B. MPLS encapsulation in frame mode supports the TTL field. MPLS encapsulation in cell mode does not support the TTL field.

C. TTL value when an IP packet enters the MPLS network. 2. The ingress LER sets the TTL value in the MPLS header to 255.

D. The processing of IP TTL copy hides the LSR in a MPLS domain, improving the network security. If TTL copy is disabled, users can use the tracert function to view the LSR of the MPLS domain.

A. Global TCP synchronization

B. High cost

C. Packets are discarded without differentiating the priority

D. High jitter and long delay

A. FALSE

B. TRUE

A. Fragment offset

B. Class of Service (CoS)

C. Application protocol

D. Destination address

A. Transmission distance

B. Transmission delay

C. Transmission bandwidth

D. Transmission jitter

A. Collection by physical optical splitter

B. Centralized collection by NMS

C. Automatic collection

D. Collection through port mirroring

A. Man-in-the-middle attacks and IP/MAC spoofing attacks

B. TCP flag attacks

C. Starvation attacks by changing the CHADDR field value

D. Bogus DHCP server attacks

A. The system automatically assigns an ID to the upper-layer application that uses a tunnel. This ID is also called the tunnel ID.

B. If the tunnel ID is not 0x0, the normal IP forwarding process starts.

C. If the tunnel ID is 0x0, the MPLS forwarding process starts.

D. After an IP packet enters an MPLS domain, the device receiving the packet queries in the FIB table first.

A. RED

B. WRED

C. WFQ

D. FIFO

A. Forwarding layer

B. Logical layer

C. Orchestration application layer

D. Control layer

A. FALSE

B. TRUE

A. The system uses discriminators to distinguish static and dynamic BFD sessions.

B. A static BFD session is set up by using commands to manually configure BFD session parameters, including the local discriminator and remote discriminator.

C. During dynamic establishment of a BFD session, the local discriminator is allocated dynamically.

D. A BFD session can be dynamically established only.

A. The RD can be used to control advertisement of VPN routing information.

B. Each VPN instance on a PE corresponds to a RD value. The RD on the same PE must be globally unique.

C. After receiving IPv4 routes from a CE, a PE adds RDs to them to convert them to globally unique VPN-IPv4 routes and advertises the routes on the public network.

D. The RD is encapsulated into the Update packet as the BGP extended attribute.

A. Network information and security logs are generated by customer devices.

B. Network devices, security devices, policy servers, and third-party systems can report network information and security logs.

C. The United Security component of the Agile Controller is responsible for log collection, processing, event association, security trend display, and security response.

D. A switch can function as the policy execution device to respond to security events by executing security policies to restrict or block insecure access.