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Which of the following is accurate regarding facial and…

Which of the following is accurate regarding facial and shoulder lighting measurements in a TelePresence
environment?

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A.
Facial lighting should be from 200 to 400 lux by using direct lighting and with the endpoint on.

B.
Facial lighting should be from 200 to 400 lux by using indirect lighting and with the endpoint off.

C.
Shoulder lighting should be from 200 to 400 lux by using direct lighting and with the endpoint on.

D.
Shoulder lighting should be from 200 to 400 lux by using indirect lighting and with the endpoint off.

E.
Room lighting should be from 200 to 400 lux by using direct lighting and with the endpoint on.

F.
Room lighting should be from 200 to 400 lux by using indirect lighting and with the endpoint off.

Explanation:
In a Cisco TelePresence environment, facial lighting should be from 200 to 400 lux by using indirect lighting and
with the endpoint off. Facial lighting is measured by holding a light meter at the person’s face and pointing it
toward the camera; this is called vertical plane lighting. Shoulder lighting is measured by pointing the light meter
at the ceiling; this is called horizontal plane lighting. Shoulder lighting should not exceed two times the value of
the facial lighting. Facial and shoulder lighting measurements should always be taken with the Cisco
TelePresence endpoint off. The integrated lighting of the Cisco TelePresence endpoint will provide
approximately 100 lux.
Lux is a measurement of the intensity of a light that strikes a surface. If you do not have a lux meter, you can
calculate lux by using the following formula:
lux = (lumens / meters2)
Lumens is a measurement of the amount of light that is emitted from a light source. A wall that is 5 meters
away from a 4000lumen light source would have a lux value of 160:
lux = (4000 / 52) = (4000 / 25) = 160
Room lighting should be equal to or less than the facial lighting and should not vary more than 100 lux within
the room. A dimming lighting control system should be used to provide consistent lighting throughout the
environment. Because direct lighting can cause shadowing and glare, Cisco recommends that indirect lighting
be used in Cisco TelePresence environments.

Cisco: Cisco TelePresence Room Design Guide: Indirect Lighting (PDF)

3 Comments on “Which of the following is accurate regarding facial and…

  1. Arturo Sanchez says:

    New 210-065 Exam Questions and Answers Updated Recently (9/Jan/2018):

    NEW QUESTION 347
    Which effect of the CLI set audio aec enable command on the immersive Cisco Telepresence system is true?

    A. Echo cancellation is enabled.
    B. Call economy quality feature is enabled.
    C. Noise cancellation is enabled.
    D. AEC audio codec is enabled.

    Answer: A

    NEW QUESTION 348
    What is the process for resetting a Cisco VCS control appliance back to initial default configuration?

    A. Push down and hold the reset button on the back of the VCS appliance for 10 seconds and power cycle the device.
    B. Log onto the CLI console as root and initiate the defaults-reset command.
    C. Log into the GUI interface as administrator, choose System Settings, select Restore, select Factory Reset.
    D. Log onto the CLI console as root and initiate the factory-reset command.

    Answer: D

    NEW QUESTION 349
    Which two Cisco TelePresence endpoints support hosting embedded multisite conferences? (Choose two.)

    A. SX20
    B. MX800
    C. DX70
    D. DX80
    E. Jabber Video for Cisco TelePresence

    Answer: AB

    NEW QUESTION 350
    Which option is the Cisco recommended layout if cascading is being used?

    A. Enhanced Continuous Presence
    B. Full Participant
    C. Continuous Presence
    D. Active Speaker

    Answer: C

    NEW QUESTION 351
    A Cisco EX60 is connected to the network, but users cannot make calls and the device is unregistered. The voice engineer configured the device on Cisco Unified Communications Manager. Which two options are causes of this problem? (Choose two.)

    A. SIP URI is not configured correctly.
    B. H.323 parameters are not configured correctly.
    C. IP address is in a different subnet.
    D. No user is associated to a device.
    E. SIP proxy is not configured correctly.

    Answer: DE

    NEW QUESTION 352
    Which desktop endpoint support 802.3af PoE?

    A. DX70
    B. DX80
    C. DX90
    D. DX650

    Answer: D




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  2. Arturo Sanchez says:

    NEW QUESTION 353
    An engineer is backing up a VCS configuration. Which two methods can be used? (Choose two.)

    A. FTP
    B. SFTP
    C. SSH
    D. Web administration
    E. Local

    Answer: BC

    NEW QUESTION 354
    An engineer sees a video camera icon on the Cisco IP phone screen status line. Which meaning of this icon is true?

    A. The Cisco VT camera is connected to the PC, and the PC is connected to the Cisco IP phone.
    B. The Cisco IP phone has web access.
    C. The Cisco IP phone is receiving a video call.
    D. The Cisco IP phone is configured with video capabilities.

    Answer: D

    NEW QUESTION 355
    When an administrator schedules a conference, which three devices are part of the process? (Choose three.)

    A. Endpoint
    B. Cisco Prime Collaboration Manager
    C. Cisco TelePresence Management Suite
    D. Cisco Communications Manager
    E. MCU appliance
    F. Cisco TelePresence Content Server

    Answer: BDF

    NEW QUESTION 356
    Which option is an immersive endpoint?

    A. Cisco TelePresence EX90
    B. Cisco TelePresence TX9000
    C. Cisco TelePresence SX10
    D. Cisco TelePresence DX70

    Answer: C

    NEW QUESTION 357
    An engineer is using a cascading feature with Cisco TelePresence Conductor and Cisco TelePresence Servers. Which two limitations will the engineer likely encounter? (Choose two.)

    A. Ad-hoc conferencing cascading is not supported.
    B. Only single-screen endpoints are supported through cascading links.
    C. Multiple-screen endpoints are supported only with three or more Cisco TelePresence Servers.
    D. Scheduled conferencing is not supported.
    E. Ad-hoc conferencing cascading is supported only with three or more Cisco TelePresence Servers.

    Answer: AD




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