H12-222 Online Practice Questions and Answers

A flow mirroring port can transmit the specified service flows on the mirroring port to the monitoring device for analysis and monitoring.

A. TRUE

B. FALSE

Complex traffic classification means that packets are classified based on the quintuple including the source and destination addresses, source and destination port numbers, and protocol type. It is usually deployed on the network core.

A. TRUE

B. FALSE

VXLAN users can access the Internet through VXLAN interfaces.

A. TRUE

B. FALSE

A DDoS attack indicates that an attacker controls many botnet hosts to send a large number of constructed attack packets. As a result, the attacked device rejects request of authorized users.

A. TRUE

B. FALSE

Which of the following statements regarding the characteristics of HA network are true? (Multiple Choice)

A. Faults cannot occur frequently.

B. Faults can be recovered rapidly.

C. No fault occurs.

D. When faults occur, services can be only restored manually.

Which of the following are label distribution control modes in the MPLS system? (Multiple Choice)

A. Liberal

B. Independent

C. Conservative

D. Ordered

In the MPLS VPN, RD values are added to IPv4 addresses to distinguish IPv4 prefixes with the same address space. Which of the following statements are true? (Multiple Choice)

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

B. After receiving IPv4 routes from a CE, a PE adds RDs to them to convert them to globally unique VPNIPv4 routes and advertises the routes on the public network.

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

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

NAT technology implements data security transmission through data encryption.

A. TRUE

B. FALSE

A label forwarding table exists on a device that runs MPLS. Which of the following statements regarding all incoming labels in the label forwarding table is true?

A. They must be different.

B. They must be the same.

C. They may be the same.

The following describes the VPN configuration on a device. Which of the following statements is true?

A. This command is configured on the CE of the customer network.

B. route-distinguisher 1:1 indicates that the RD value is 1:1, which is not globally unique.

C. vpn-target 1:1 export-extcommunity indicates that the Export Target of the VPN is 1:1.

D. vpn-target 2:2 import-extcommunity indicates that the Import Target of the VPN is 2:2. Only one value can be set for the Import Target.

IP packets are marked with the ToS field for QoS, and the first 6 bits of the ToS field mark the DSCP priority.

A. TRUE

B. FALSE

Which of the following is not the limitation of traditional networks?

A. The network protocol implementation is complex, and the OandM is difficult.

B. The traffic path cannot be adjusted filexibly.

C. The upgrade of new network services is slow.

D. Different vendors' devices provide similar implementation, there is less difference in operation commands, and operations are easy.

How many bits does an MPLS label field have?

A. 8

B. 3

C. 1

D. 20

Which of the following is not overlay VPN technology?

A. GRE

B. IPSec VPN

C. SSL VPN

D. L2TPVPN

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

A. There are two label distribution control modes: independent and ordered.

B. If the label advertisement mode is DU and the label distribution control mode is Independent, an LSR distributes labels without waiting for labels from the downstream device.

C. If the label advertisement mode is DoD and the label distribution control mode is Independent, the transit device distributes labels only after receiving a label mapping message from the egress device.

D. If the label advertisement mode is DU and the label distribution control mode is Ordered, the transit LSR distributes labels to the ingress device only after receiving a label mapping message from the egress device.