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is3120 network communications infrastructure > IS 3120 CHAPTER 10 > Flashcards

IS 3120 CHAPTER 10 Flashcards

1
Q

The ability for two or more persons to share a common voice communication, usually implemented via an intermediate phone or a shared conference bridge.

A

Audio conference

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2
Q

A communication betoon two or more persons, often in different geographic locations, using tools such as shared whiteboards, applications and commuter desktops.

A

Collaborative conference

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3
Q

A company that usually provides services such as UC, VoIP, or other applications.

A

Hosting/hosted service provider (HSP)

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4
Q

The agency within the United Nations responsible for global standardization of telecommunications practices and procedures.

A

International Telecommunications Union (ITU)

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5
Q

Provides a broad, rich set of applications, such as Web hosting, database management, VoIP, and UC and network management, such as management of routers and firewalls, usually using access provided by the ISP.

A

Managed Service provider (MSP)

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6
Q

Technology that allows the geographic location of a human or nonhuman resource (such as a conference room) to be determined.

A

Presence

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7
Q

Users’ perceptions or measurements and calculations approximating user’s perceptions of the quality of a real time voice or video communication.

A

Quality of experience (QoE)

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8
Q

The protocol used by Real Time Protocol to provide feedback from the recipient of RTP transported information to the sender regarding traffic management metrics, such as number of packets received, delay, delay variation, and Mean Opinion Scores.

A

Real-Time Control Protocol (RTCP)

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9
Q

A conference that uses such tools as audio, video, and shared whiteboards and desktops to accomplish its goals.

A

Rich media conference.

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10
Q

Services or features allowing on a non-SIP network to be delivered on a SIP network, and vice versa.

A

Service/feature gateway

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11
Q

A gateway that provides a means of connecting two different systems that use different types of signaling, such as a SIP to ISDN gateway.

A

Signaling gateway

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12
Q

A ream-time video and audio conferencing capability utilizing large-screen and high-definition video such that conference participants appear to be flu-size.

A

Telepresence

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13
Q

A type of gateway that translates between two types of telephony trunking.

A

Trunking gateway

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14
Q

An identifier formatted much like an email address, that identifies a user in the SIP realm..

A

Uniform resource identifier (URI)

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15
Q

A communication between two or more persons where each may see the other and, optionally, all parties can see other things, such as pre-recorded video content.

A

Video conference

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16
Q
  1. The definition of UC is not the same in all situations.

TRUE OR FALSE

A

TRUE

17
Q
  1. The Session Initiation Protocol (SIP) is documented primarily in which Request for Comments (RFC)?
  2. RFC 2520
  3. RFC 791
  4. RFC 3261
  5. RFC3265
A

RFC 3261

18
Q
  1. Which of the following are generations of signaling in the traditional telephony network? (Select two)
  2. Digital Switching
  3. IN
  4. AIN
  5. TIP and RING
A

IN

AIN

19
Q
  1. Which three of the following are possible types of SIP gateways?
  2. Dial Plan
  3. Session Border Controller SIP-SIP
  4. SIP Trunking
  5. Domain Name Service (DNS)
  6. Application
A

Session Border Controller SIP-SIP
SIP Trunking
Application

20
Q
  1. Which of the following affect the quality of [user] experience?
  2. Grounding
  3. Packet loss
  4. Delay variation
  5. A and B only
  6. None of the above
A

Grounding

Packet loss

21
Q
  1. Desired quality of service in IP networks is signaled by ___.
  2. Type of service (TOS) bits
  3. SIP-T
  4. The service-level agreement (SLA)
  5. IPv4
A

Type of service (TOS) bits

22
Q
  1. Bib Bandwidth traffic engineering ___.
  2. Provides “big pipes” resulting in low utilization
  3. Optimizes QoS using TOS bits and prioritization and QoE
  4. Manages TOS bits for prioritization and QoE
  5. Does not take QoE into effect
A

Provides “big pipes” resulting in low utilization

23
Q
  1. Managed bandwidth traffic engineering ___.
  2. Optimizes QoS using bits and prioritization
  3. Provides “big pipes” resulting in low utilization
  4. Is used for Service Level Agreement purposes only
  5. Does not take QoE into effect
A

Optimizes QoS using bits and prioritization

24
Q
  1. When a SIP UA is initialized, it usually ___.
  2. Registers with the SIP server/registrar
  3. Uses Address Resolution Protocol to map its URI to a MAC address
  4. Uses Address Resolution Protocol to map its URI to an IP address
  5. Sends an Internet Control Message Protocol request for its URI
A

Registers with the SIP server/registrar

25
Q
  1. URI stands for ___.
  2. Uniform resource identifier
  3. Universal resource identifies
  4. Universal record identifier
  5. Uniform record identification
A

Uniform resource identifier

26
Q
  1. Presence in UC means ___.
  2. The geolocation of a human or nonhuman resource
  3. How near one resource is to another
  4. The availability or unavailability of a human or nonhuman resource (such as a conference room)
  5. The way that a subscriber would like their calls to be handled
A

The geolocation of a human or nonhuman resource

27
Q
  1. There are three phases of a UC call. They are ___.
  2. Call setup, information transfer, and call teardown
  3. Initialization, transfer, and de-initialization
  4. SS7, IN, and AIN
  5. Start phase, transfer phase, and shut-down phase
A

Call setup, information transfer, and call teardown

28
Q
  1. The Layer 4 protocol used most often with SIP is ___.
  2. Transmission Control Protocol TCP
  3. User Datagram Protocol UDP
  4. Internet Protocol Version 4 IPv4
  5. Internet Protocol Version 6 IPv6
A

Transmission Control Protocol TCP

29
Q
  1. Preference allows ___.
  2. A subscriber to direct a UC system on how to handle incoming communications
  3. Geolocation of a human or nonhuman resource (such as a conference room) in three-dimensional space
  4. Routers to determine the shortest path first for any particular UCUC message
  5. None of the above
A

A subscriber to direct a UC system on how to handle incoming communications

30
Q
  1. UC is specified in ___.
  2. RFC 3621
  3. RFC 791
  4. RFC 3625
  5. None of the above
A

None of the above

is3120 network communications infrastructure (15 decks)

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