400-051 exam

Refer to the exhibit. Which DTMF relay method is advertised when the originating SIP gateway sends an INVITE message with a Call-Info header shown?A . RFC 2833B . SIP INFOC . SIP NOTIFYD . SIP KPMLE . In-band audioView AnswerAnswer: C Explanation: You can develop user-specific applications that reside on...

Which four attributes are needed to determine the time to complete a TFTP file transfer process? (Choose four.)A . file sizeB . file typeC . network interface typeD . round-trip timeE . packet loss percentageF . response timeoutG . network throughputView AnswerAnswer: A, D, E, F Explanation: Four attributes that...

Which SIP request method enables reliability of SIP 1xx response types?A . ACKB . PRACKC . OPTIONSD . CANCELE . REGISTERView AnswerAnswer: B Explanation: In order to achieve reliability for provisional responses, we do nearly the same thing. Reliable provisional responses are retransmitted by the TU with an exponentialbackoff. Those...

Refer to the exhibit. Which SIP trunk deployment model is shown in this enterprise VoIP topology?A . mixed TDM and VoIPB . centralizedC . hybridD . traditional TDME . distributedView AnswerAnswer: C Explanation: Hybrid SIP Trunk Model In a hybrid SIP trunk deployment, some of the businesses’ sites conform to...

You have implemented 5-digit forced authorization codes to all international route patterns on Cisco Unified Communications Manager. Your users report that after entering the FAC codes, they must wait for more than 10 seconds before the call is routed. Which procedure eliminates the wait time?A . Check and eliminate any...

Refer to the exhibit. During a QSIG tunneling over SIP call establishment, which two types of SIP messages can the OGW use to tunnel a waiting QSIG message? (Choose two.)A . SIP re-INVITEB . SIP NOTIFYC . SIP INFOD . SIP OPTIONSE . SIP UPDATEF . SIP REFERView AnswerAnswer: A,...

Which two SCCP call signaling messages are sent by an IP phone to Cisco Unified Communications Manager? (Choose two.)A . SoftKeyEventB . OpenReceiveChannelAckC . StartMediaTransmissionD . SelectSoftKeysE . CloseReceiveChannelF . StopToneView AnswerAnswer: A, B Explanation: This message indicates which soft key was pressed. Upon receipt of this message, CallManager invokes...

What is the minimum number of H.225 messages required to establish an H.323 call with bidirectional media?A . 1B . 2C . 3D . 4E . 5View AnswerAnswer: B Explanation: A typical H.245 exchange looks similar to below figure After this exchange of messages, the two endpoints (EP) in this...

Which Call Admission Control mechanism is supported for the Cisco Extension Mobility Cross Cluster solution?A . Location CACB . RSVP CACD . 323 gatekeeperE . intercluster Enhanced Location CACF . visiting cluster's LBM hubView AnswerAnswer: B Explanation: Configuring extension mobility cross cluster (EMCC) is nothing you should take lightly. EMCC...

In a SIP REFER-based call transfer, which SIP message is being used by the recipient to notify the originator that the final recipient was successfully contacted?A . 200 OKB . NOTIFY with a message body of 200 OKC . 202 AcceptedD . 100 TryingE . 200 BYEView AnswerAnswer: B Explanation:...