Huawei Certified Datacom Professional - Fast Certification - ENU 認定 H12-224 試験問題:

1. Which of the following values can be used to set security levels of user-defined zones of USG series firewalls?

A) 40
B) 100
C) 80
D) 150

2. In a MPLS VPN network, two-layer MPLS labels are added to data packets before they are transmitted over the public network. Which of the following statements regarding two-layer labels are false? (Multiple Choice)

A) The outer label is the private network label and the inner is the public network label.
B) The MPLS VPN outer label is distributed manually by the LDP protocol. The inner label is distributed by the peer M
C) The outer label is used to instruct the PE to send data packets to the correct VPN
D) By default the outer label in data packets is popped out before being forwarded to the last hop

3. An LSR supports various label retention modes. Which of the following statements regarding the liberal mode are true?

A) This label retention mode saves the memory and label space B label retention mode reduces the LS
B) An LSR retains labels from a neighboring LSR only when the neighbor is its next hop
C) An LSR reserves all label sent by its neighbor
D) The liberal mode requires more memory and label space

4. RSTP provides faster convergence than STP, what are causes?

A) RSTP defines the edge port role. The edge port does not receive and process configuration BPDUs, and not participate in RSTP calculation
B) When the designated port fails, the optimal alternate port will become the root port and enter the forwarding state.
C) When the root port fails, the optimal alternate port will become the root port and the forwarding state.
D) In RSTP, when a port receives is bpdus form the upstream designated bridge , the port will compare the own stored is bpdu with the forwarding state.
E) In RSTP, when a port is elected as the designated port, it enters the discarding state. Then the port immediately enters the forwarding state

5. Which of the following statements regarding the model is false?

A) Lt provides guaranteed bandwidth and delay to meet requirements of the application
B) RSVP is used to transmit signaling of Qos requests notifying the router of Qos requirements of the application
C) ln this model the network maintains the status of each flow(IP addresses and port numbers of source and destination and destination ends )meeting application requirements
D) Lt can provide a load control service to ensure that even in the case of network overload can provide services similar to the net model ensures that packets of some applications can be processed with the low delay

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