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H3C GB0-391 Exam Syllabus Topics:

H3C Constructing Secure optimized WANs v2.0 Sample Questions:

Question 1

The information displayed on the MSR router is as follows:
Sstem Defined Behavior Information:
Behavior: ef
Expedited Forwarding:
Bandwidth 20 (% ) Cbs-ratio 25
Behavior: af
Assured Forwarding:
Bandwidth 20 (%)
Discard Method: Tail
Behavior: be
-none-
Then the following statement is incorrect is _____

A. explicit information indicating the behavior of a user-defined
B. significant information is shown the behavior of the system defined
C. use can change the percentage of the bandwidth occupied by the queue user behavior
D. which is defined in the EF queue and AF queues, bandwidth is reserved bandwidth occupied respectively 20%

Question 2

The following statement about RED random early detection is incorrect.

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

Question 3

Which of the following descriptions about GRE VPN configuration is correct is ____ .( Choose one or more )

A. lack of provincial case, the Tunnel Interface packet encapsulation mode as GRE
B. After the keepalive function is enabled on the tunnel interface , by default, once the router fails to receive the keepalive message from the other party for three times , the tunnel is considered unavailable
C. with home GRE VPN when, regardless of static routing or dynamic routing, the Tunnel interfaces should start Keepalive function, to detect the actual work of the tunnel interface
D. Tunnel source address and a destination address uniquely identifies an interface of a tunnel, at the ends of the tunnel Tunnel source address and destination address from the interface must be the same

Question 4

The following commands are configured on an interface of the router:
qos car inbound an cir 1000 cbs 62500 ebs 0 green remark-dscp-pass ef red remark-dscp-continue af13
When the port receives packets, the following statement is correct _____

A. When the received message rate is less than 1000kbps , the message will be forwarded normally without any processing
B. When the received message rate is less than 1000kbps , after the DSCP value of the message is marked as EF , it is forwarded to the next CAR policy for processing and forwarding
C. When the received message rate is less than 1000kbps , it can burst 62500 bytes, and the DSCP value of the message exceeding 1000kbps is marked as af13 and forwarded directly
D. When the received packet rate is less than 1000kbps , the packet DSCP value is marked as EF and then forwarded
E. When the received message is greater than the rate of 1000kbps , the burst can be 62500 bytes than 1000kbps packets DSCP value is marked as AF13 , straight forward next CAR policy processing

Question 5

Among the following VPN technologies, the VPNs belonging to the second layer are:

A. VLL
B. GRE VPN
C. VPLS
D. IPSce VPN

Solutions: