GB0-392-ENU 実際試験問題と解答 - 模擬練習 - 受験自信を増やす

Question No : 1
If each queue corresponds to a type of message, and the ratio of the sending quota of each queue increases sequentially, i.e., 1:2:3:...:maximum number of queues, and assuming the port speed of the scheduling is 100Mbps, then when the messages corresponding to each queue are forwarded at a speed of 20Mbps, the port becomes congested.
The bandwidth available for the messages corresponding to queue 9 is approximately ().

A.5.92%
B.6.58%
C.6.62%
D.7.35%

正解:

Question No : 2
When the queue length reaches its maximum value, the message will be discarded using the () method.

A.Tail discard
B.RED
C.WRED
D.Discard the first message to enter the queue, in chronological order.

正解:

Question No : 3
Configure the following command on the MSR router:
Qos cql 1 queue 1 serving 1000
Qos cql 1 queue 2 serving 2000
QoS CQL: 1 queue, 3 servings, 500
Qos cql 1 queue 4 serving 1500
Qos cql 1 protocol ip tcp ftp-data queue 2
Qos cql 1 protocol ip udp tftp queue 3
Qos cql 1 protocol ip pop3 queue 4
#
Interface GigabitEthernet0/1
Port link-mode route
IP address 192.168.1.1 255.255.255.0
Duplex full
Speed 10
Qos cq pql 1
Traffic forwarded from G0/1 includes Telnet, FTP Data, TFTP, and POP3 traffic, all at 4Mbps. With no other traffic on the port, the approximate bandwidth available for TFTP packets is ().

A.20%
B.40%
C.10%
D.30%
E.Configuration error

正解:

Question No : 4
Configure the following command on the MSR router:
Qos cql 1 queue 1 serving 1000
Qos cql 1 queue 2 serving 2000
QoS CQL: 1 queue, 3 servings, 500
Qos cql 1 queue 4 serving 1500
Qos cql 1 protocol ip tcp ftp-data queue 2
Qos cql 1 protocol ip udp tftp queue 3
Qos cql 1 protocol ip pop3 queue 4
#
Interface GigabitEthernet0/1
Port link-mode route
IP address 192.168.1.1 255.255.255.0
Duplex full
Speed 10
Qos cq pql 1
Traffic forwarded from G0/1 includes Telnet, FTP Data, TFTP, and POP3 traffic, all at 4Mbps. There is no other traffic on the port. Therefore, the approximate bandwidth available for TFTP Data packets is ().

A.20%
B.40%
C.10%
D.30%
E.Configuration error

正解:

Question No : 5
Configure the following command on the MSR router:
Qos cql 1 queue 1 serving 1000
Qos cql 1 queue 2 serving 2000
QoS CQL: 1 queue, 3 servings, 500
Qos cql 1 queue 4 serving 1500
Qos cql 1 protocol ip tcp ftp-data queue 2
Qos cql 1 protocol ip udp tftp queue 3
Qos cql 1 protocol ip pop3 queue 4
#
Interface GigabitEthernet0/1
Port link-mode route
IP address 192.168.1.1 255.255.255.0
Duplex full
Speed 10
If QoS cq pql 1 forwards traffic from G0/1 including Telnet, FTPData, TFTP, and POP3 traffic at 4Mbps, and there is no other traffic on the port, then approximately what bandwidth can be used for Telnet packets?

A.20%
B.40%
C.10%
D.30%
E.Configuration error

正解:

Question No : 6
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. Immediately send a Cancel message to the called UA.
B. Immediately send a BE message to the called UA.
C. Immediately send a Back message to the called UA.
D. The request cannot be revoked.

正解: D

Question No : 7
Which of the following descriptions of the SIP message structure are correct?

A.Some special SIP response messages do not have a start line.
B.All SIP messages contain one or more headers to identify the message type.
C.The message body mainly describes the session to be established by the message; some special SIP messages do not have a message body.
D.The start line, message header, and message body are the basic components of a SIP message; a SIP message lacking any of these parts is an invalid message.

正解:

Question No : 8
In a SIP network, when the redirection server receives a session request message from the calling UA, ().
A. The redirection server retrieves the location information of the called UA and then returns it to the calling UA.
B. The redirect server locates the called user agent's (UA) location information and initiates a session request to that location.
C. The redirection server directly forwards the received calling UA session request message to the called UA.
D. All messages from the calling User Agent (UA) are forwarded through the proxy server.

正解: A

Question No : 9
In the H.323 protocol, which of the following protocols handles the capability negotiation between the two parties in a call?

A.H225.0
B.H245
C.RAS
D.None of the above answers are correct.

正解:

Question No : 10
Which of the following messages is used by the called party to indicate to the calling party that the call request is being processed and that no further call setup information will be received?

A.Progress
B.Call-proceeding
C.Alerting
D.Connecting

正解:

Question No : 11
In a VoIP network where calls are made via a gatekeeper, what happens when the gatekeeper cannot determine the location of the called terminal within its jurisdiction?

A.Send a Location Request (LRQ) message to a gatekeeper it knows.
B.Directly reply to the caller with a Location Rejection (LRJ) message.
C.Directly reply to the caller with a permission denial (ARJ) message.
D.None of the above answers are correct.

正解:

Question No : 12
An H323 gateway receives an RRJ message when registering with the gatekeeper, indicating that ().

A.The gatekeeper accepted the gateway's registration.
B.The gatekeeper rejected the gateway's registration.
C.Incorrect parameters transmitted by the gateway.
D.The gatekeeper is processing the gateway's registration request.

正解:

Question No : 13
An H323 gateway receives an RCF message when registering with the gatekeeper, indicating that ().

A.The gatekeeper accepted the gateway's registration.
B.The gatekeeper rejected the gateway's registration.
C.Incorrect parameters transmitted by the gateway.
D.The gatekeeper is processing the gateway's registration request.

正解:

Question No : 14
What will happen to the H323 network center if a user misconfigures the packet filtering policy, filtering all UDP packets?

A.Does not affect calls between terminals.
B.All calls will be aborted during the RAS phase.
C.All calls will be terminated at stage
D.931.
E.All calls will be aborted at stage H245.

正解:

Question No : 15
What will happen to calls in an H.323 network if the user misconfigures the packet filtering policy, filtering all TCP packets?

A.Does not affect calls between terminals.
B.All calls will be aborted during the RAS phase.
C.All calls will be terminated at stage
D.931.
E.All calls will be aborted at stage H245.

正解:

H3C GB0-392-ENU 問題練習