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H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. When the user uses the phone, after picking up the phone handle and inputting the called number, what kind of signaling does the ring back from the receiver belong to ______ .

A) monitoring tube signaling
B) to address signaling
C) Call call signaling
D) letter information signaling

2. The calling UA sends a request message and receives a 200 OK response from the called UA .How can the calling UA cancel the request ?

A) Li ie the called UA sent BE message
B) Li ie the called UA send Cancel message
C) No law have requested revocation
D) Li ie the called UA sent Back message

3. In L2TP VPN , LAC ( LATP Access Concentrator , L2TP access concentrator ) receives the IP data packet sent from the remote system to the server , and needs to encapsulate the data packet and send it to LNS ( L2TP Network Server , L2TP) Network server ) , the encapsulation format of the data packet transmitted between LAC and LNS is

A) Private network data packet ->PPP header ->L2TPT header ->UDP header -> Public network IP header
B) Private network data packet ->PPP header ->UDP header ->L2TPT header -> Public network IP header
C) Private network data packet ->PPP header ->UDP header -> public network IP header ->L2TPT header
D) Private network data packet ->L2TPT header ->PPP header ->UDP header -> public network IP header

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 , it can burst 62500 bytes, and the DSCP value of the message exceeding 1000kbps is marked as af13 and forwarded directly
B) When the received message rate is less than 1000kbps , the message will be forwarded normally without any processing
C) 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
D) 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
E) When the received packet rate is less than 1000kbps , the packet DSCP value is marked as EF and then forwarded

5. Which of the following statements about IKE is correct is ________ .( Choose one or more )

A) IKE produced when the second phase is completed students IKE SA
B) The first phase of IKE exchange mode has main mode and aggressive mode
C) The exchange of keys in both IKE modes requires authentication
D) Symmetric key algorithm is used when IKE exchanges keys

Solutions: