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Oracle Communications Session Border Controller Implementation Essentials

Question No: 1

Which option tag is used for reliability of provisional responses in SIP messages?

  1. 100rel

  2. Prack

  3. Rel

  4. Supported

  5. Required

Answer: A

Question No: 2

Which two statements about the Session Initiation Protocol (SIP) are TRUE?

  1. SIP messages are formatted in MIME/64 hex format.

  2. SIP messages are encoded in binary.

  3. A SIP ACK is used to acknowledge receipt of each message sent during call setup.

  4. Every SIP request has a method.

  5. SIP INVITE method may be used to initiate a call.

Answer: A,E

Question No: 3

Which is NOT part of the Net-Net 4500#39;s front panel:

  1. Power and status LEDs

  2. A pinhole for issuing reset

  3. A flip-down door covering two PCMCIA slots

  4. A fan pack with removable and cleanable fan filter

  5. A USB port for local storage

Answer: C

Question No: 4

Which two signaling services are supported on the Net-Net 4500?

  1. G.711 Back-to-Back linecoding

  2. H.248 back-to-back virtual gateway and call agent

  3. SIP-MGCP Inter-working function

  4. MGCP back-to-back virtual gateway and call agent

  5. H.323 to SIP codec transcoding

Answer: B,D

Question No: 5

The parameter in the sip-interface element indicates how often a User Agent (UA) located behind a NAT should re-register with the Session Border Controller.

  1. nat-interval

  2. nat-traversal

  3. registration-interval

  4. nat-mode

  5. min-reg-expire

Answer: B

Question No: 6

Which two Net-Net 4500 Realm Bridging models are valid in a SIP environment?

  1. SIP-NAT Bridge (SNB)

  2. Multiple SIP-NATs Hosted in a Home Realm (MSNHHR)

  3. Open System Interconnect (OSI)

  4. Header Manipulation for SIP-NAT Realms (HMSNR)

  5. Single SIP NAT Homed in a Trusted Network (SSNHTN)

Answer: B,E

Question No: 7

What two options are available to enable access control in a SIP configuration and how would they be configured?

  1. Configure the allow-anonymous parameter to source-realm.

  2. Configure the al low-anonymous parameter under the sip-port to realm-prefix and configure an ingress realm addr-prefix to an address that is not

  3. Configure the al low-anonymous parameter under the sip-port to agents-only, then configure your SIP peers as session agents.

  4. Configure a steering-pool with a smaller subnet than the realm-prefix.

  5. Configure the access-control parameter to realm-prefix.

Answer: C,E

Question No: 8

In a peering environment based on SIP-NAT Bridge, which two elements must be configured to accommodate signaling and media?

  1. Physical Interface

  2. Network Interface

  3. SIP Manipulation Rule

  4. RTP Table

  5. Local Policy

Answer: B,C

Question No: 9

Which two statements regarding SIP processing are TRUE?

  1. An initial INVITE will contain a From header tag and a To header tag as a globally unique identifier for the dialog.

  2. A CANCEL method can terminate a dialog.

  3. The combination of the To tag, From tag, and Call-ID completely defines a peer-to-peer SIP relationship and is referred to as a dialog.

  4. To avoid retransmissions, User Agents must forward received 100 Trying messages to their next hop.

  5. SIP sessions are terminated and re-originated as new sessions as they are routed through the Session Border Controller.

Answer: A,C

Question No: 10

You configured local policy preferences on the Net-Net 4500.The Net-Net 4500 sorts through these preferences.

Which preference is ranked the second highest priority?

  1. Codec

  2. Lowest cost

  3. Next hop

  4. Realm

  5. Protocol

Answer: E

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