Huawei Certified Datacom Professional - Fast Certification - ENU - H12-224 Exam Practice Test

A. On a PIM-SM network multicast routers that have just started need to send Hello messages to discover neighbors and maintain neighbor relationships

B. A DR is selected on a network segment based on Hello messages exchanged between routers

C. Multicast routers periodically send Hello Messages to each other to maintain communication

D. Hello messages are sent to multicast group address

A. the buffer overflow attack is the most common attack of the software system.

B. the buffer overflow attack indicates that an attacker uses defects of memory operations of the software system and runs attack codes with high operation rights.

C. the buffer overflow attack is irrelevant to the OS vulnerabilities and architecture.

D. the buffer overflow attack is an application-layer attack.

A. RSTP BPDUs with the TC flag

B. RSTP BPDUs with the TCA flag

C. STP BPDUs with the TCA flag

D. STP BPDUs with the TCN flag

A. when a router receives data packets, packet loss may occur because the cpu is busy and cannot process data packets.

B. packet loss is generally caused by the delay, the tall drop packet loss may occur because of the queue is full Mill -

C. when data packets are scheduled to queues, packet loss may occur because the queue is full.

D. when data packets are transmitted on a link, packet loss may occur because of link faults.

A. Software firewall

B. Stateful inspection firewall

C. Proxy firewall

D. Packet filtering firewall

A. The aging time of MAC address entries is changed.

B. The entire MAC address table is deleted.

C. Packets are flooded on the entire network

D. Some MAC address entries are deleted.

A. it sends an error message to the muter that sends the Update message

B. lt accepts and adds this mute to its BGP muting table, However this mute will not be preferred by BGP and not added to

C. it does not add this mute to its BGP muting table and discards this mute

D. it accepts and adds this mute to its BGP muting table This mute will participate in BGP mute selection and many become

A. The main function of MPLS forwarding plane can add labels or delete labels from an IP packet and forward the received packets

B. MPLS can use Ping or Trace route to detect LSP errors and locate faulty nodes

C. if a LSP fails to forward data the MPLS control plane responsible for ISP select this error

D. After an IP packet enters the MPLS network, the ingress LER will analyze IP packet and add proper to the packet

A. keepalive messages are used to monitor the TCP connection integrity of LDP sessions.

B. When the ingress LSR receive a label mapping message, an session is established

C. Two LSRs send Hello messages to each other trigger the establishment of DLD session.

D. Keepalive message are used to monitor the TCP connection integrity of LDP sessions.

A. Different zones of firewall can use the same priority.

B. The default firewall zone can be deleted.

C. A firewall interface can belong to different

D. Different firewall interfaces can belong to the

A. FALSE

B. TRUE

A. (MTBF+MTTR)/MTBF*100%

B. MTBF/MTTR*100%

C. MTBF/(MTBF+MTTR)*100%

D. MTTR/MTBF*100%

A. FALSE

B. TRUE