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H3C GB0-391 Exam Syllabus Topics:

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. The configuration commands on the MSR router are as follows:
acl number 2001
rule 0 permit source 192.168.2.0 0.0.0.2
acl number 2002
rule 0 permit source 192.168.3.0 0.0.0.2
acl number 2003
rule 0 permit source 192.168.0.0 0.0.0.2
#
traffic classifier 2 operator or
if-match acl 2001
if-match acl 2002
if-match acl 2003
#
traffic behavior 2
filter den
#
qos polic 2
classifier 2 behavior 2
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
qos appl polic 2 outbound
Then when the source address are 192.168.2.2 , 192.168.3.2.1 , 92.168.0.2 the packets from the port G0 / 1 forwarding outwardly, the following statement is correct ______

A) Forwarding of packets whose source address is 192.168.2.2 is blocked
B) Packets with the source address of 192.168.2.2 are forwarded normally
C) three message by the flow are blocked
D) 1 Packets with a source address of 92.168.0.2 are forwarded normally

2. Which of the following components is made up of the DiffServ model ?

A) DS boundary nodes ( DS Boundar Nodes )
B) Non- DS domain
C) the DS inner portions node ( the DS Interior Nodes )
D) DS District ( Different Service Region )
E) DS domain ( Differentiated Service Domain )
F) edge border links and internal links

3. Which statement about RED ( Random Early Detection ) is correct?

A) In discarded after a congested port
B) flat average queue length is less than the minimum discard threshold, less than the maximum discard threshold, packets are dropped randomly
C) flat average queue length is less than the minimum discard threshold, discarding packets not
D) The higher the priority of the packet , the lower the drop probability.Which means less discarded
E) flat average queue length is greater than the maximum discard threshold, packets are dropped randomly

4. PPP link transmission portion of the packet header information remains the same, in order to improve the throughput of the link, it may be considered by ______ mechanism.

A) IP packet header compression
B) PPP packets of STAC-LZS algorithm
C) link channel and slice interleave
D) VJ TCP header compression

5. What is correct about DOS attacks is ____ .

A) on to DOS attacks can be controlled by configure access lists on a network device to defense
B) for at DOS attack in the FTP FLOOD attack can be taken to limit the number of connections per second to defense
C) DOS attacks are aimed at reducing the ability of the attacked system to provide services
D) on to DOS attacks in the TCP FLOOD attack, you can use TCP proxy mechanism to defense

Solutions: