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Q21. Which two statements about symmetric encryption are true? (Choose two.) 

A. With symmetric encryption, the encryption key equals the decryption key. 

B. Symmetric encryption is commonly used to sign asymmetric keys. 

C. Symmetric encryption is a good choice for real-time encryption of bulk data. 

D. Symmetric encryption uses asymmetric keys. 

Answer: A,C 

Explanation: 

Incorrect Answer: B, D There are two basic techniques for encrypting information: symmetric encryption (also called secret key encryption) and asymmetric encryption (also called public key encryption.) in symmetric key As long as both sender and recipient know the secret key, they can encrypt and decrypt all messages that use this key. A public key is made freely available to anyone who might want to send you a message. A second, private key is kept secret, so that only you know it. Link: 

http://support.microsoft.com/kb/246071 


Q22. Refer to the following exhibit. 

The MGCP gateway has the following configurations: 

called party transformation CSS HQ_cld_pty CSS (partition=HQ cld_pty.Pt) call.ng party transformation CSS HQ_clng_pty CSS (partition=HQ_clng_pty Pt) 

All translation patterns have the check box "Use Calling Party's External Phone Number Mask" enabled. 

When the IP phone at extension 3001 places a call to 9011 49403021 56001# what is the resulting called and calling number that is sent to the PSTN? 

A. The called number is 01 1 49403021 56001. The calling number will be 5553001 and number type set to subscriber. 

B. The called number is 011 49403021 56001. The calling number will be 5215553001 and number type set to national. 

C. The called number is 4940302156001 with number type set to international. The calling number will be 5215553001 and number type set to national. 

D. The called number is +49403021 56001 with number type set to international. The calling number will be 5215553001 and number type set to subscriber. 

Answer:

Explanation: 

Incorrect Answer: B, C, D Check the check box "Use Calling Party's External Phone Number Mask" if you want the full, external phone number to be used for calling line identification (CLID) on outgoing calls. You may also configure an External Phone Number Mask on all phone devices. Link: http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a00805 b6f33.shtml 


Q23. Which two actions ensure that the call load from Cisco TelePresence Video Communication Server to a Cisco Unified Communications Manager cluster is shared across Unified CM nodes? (Choose two.) 

A. Create a neighbor zone in VCS with the Unified CM nodes listed as location peer addresses. 

B. Create a single traversal client zone in VCS with the Unified CM nodes listed as location peer addresses. 

C. Create one neighbor zone in VCS for each Unified CM node. 

D. Create a VCS DNS zone and configure one DNS SRV record per Unified CM node. 

E. In VCS set Unified Communications mode to Mobile and remote access and configure each Unified CM node. 

Answer: A,D 


Q24. Which three steps configure Cisco Unified Survivable Remote Site Telephony for SIP phones? (Choose three.) 

A. Configure a phone NTP reference. 

B. Configure an SRST reference. 

C. Configure the SIP registrar. 

D. Configure voice register global dn. 

E. Configure voice register pool. 

F. Configure telephony service. 

Answer: B,C,E 


Q25. What is the standard Layer 3 DSCP media packet value that should be set for Cisco TelePresence endpoints? 

A. CS3 (24) 

B. EF (46) 

C. AF41 (34) 

D. CS4 (32) 

Answer:


Q26. Which action configures the registration of transcoder resources? 

A. Cisco IOS software registers transcoder resources with SIP. 

B. Cisco IOS software registers transcoder resources with SCCP. 

C. Cisco IOS software registers transcoder resources with H.323. 

D. Cisco IOS software does not register transcoder resources. 

Answer:


Q27. Refer to the exhibit. 

To permit three G.729 calls, what should the bandwidth value be for the ip rsvp bandwidth command? 

A. 32 

B. 48 

C. 64 

D. 88 

E. 128 

Answer:


Q28. Refer to the exhibit. 

The HQ site uses area code 650. The BR1 site uses area code 408. The long distance national code for PSTN dialing is 1. To make a long distance national call, an HQ or BR1 user dials access code 9, followed by 1, and then the 10-digit number. Both sites use MGCP gateways. AAR must use globalized call routing using a single route pattern. Assume that all outgoing PSTN numbers are localized at the egress gateway as shown in the exhibit. Which statement is true? 

A. The AAR group system must be configured on the device configuration of the phones. 

B. The AAR group system must be configured on the line configuration of the phones. 

C. The single AAR group system cannot be used. A second AAR group must be configured in order to have source and destination AAR groups. 

D. The AAR group system must be configured under the AAR service parameters. 

Answer:


Q29. What happens if location-based CAC is used and there is no bandwidth available when a remote caller is placed on hold? 

A. Cisco Unified Communications Manager sends TOH rather than MOH. 

B. Cisco Unified Communications Manager terminates the call. 

C. Cisco Unified Communications Manager plays default MOH. 

D. Cisco Unified Communications Manager attempts to reconnect the call immediately. 

Answer:


Q30. Which statement best describes globalized call routing in Cisco Unified Communications Manager? 

A. All incoming calling numbers on the phones are displayed as an E.164 with the + prefix. 

B. Call routing is based on numbers represented as an E.164 with the + prefix format. 

C. All called numbers sent out to the PSTN are in E.164 with the + prefix format. 

D. The CSS of all phones contain partitions assigned to route patterns that are in global format. 

E. All phone directory numbers are configured as an E.164 with the + prefix. 

Answer:

Explanation: 

Incorrect Answer: A, C, D, E For the destination to be represented in a global form common to all cases, we must adopt a global form of the destination number from which all local forms can be derived. The + sign is the mechanism used by the ITU's E.164 recommendation to represent any PSTN number in a global, unique way. This form is sometimes referred to as a fully qualified PSTN number. Link: http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/7x/dialplan.html#wp1153205