Pass the Cisco Cisco Specialist 648-238 Questions and answers with CertsForce

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Questions # 1:

Refer to the exhibit.

Question # 1

Cameras and a Cisco VSM server are connected to a Layer 2 switch. Which three steps will allow the Cisco VSM servers to see video traffic from the two IP cameras? (Choose three.)

Options:

A.

GigE 0/10 should be configured to accept traffic from all VLANs using the #switchport mode access vlan all command.


B.

GigE 0/10 should be configured to dynamic mode using the #switchport mode dynamic desirable command.


C.

Implement "router-on-a-stick".


D.

Implement inter-VLAN routing.


E.

The link between GigE 0/5 and FE 1/1 should be configured as a trunk port.


Questions # 2:

Where should outdoor surveillance cameras be mounted when nearby sources of light are present?

Options:

A.

The camera should be mounted lower than the light source.


B.

The camera should be mounted in parallel with the nearest light source.


C.

The camera should be mounted above the light source.


D.

Location does not matter, as long as the camera is day/night capable.


Questions # 3:

Which two statements about differences between HD or full HD and megapixel cameras are true? (Choose two.)

Options:

A.

Aspect ratio of full HD and megapixel cameras is the same.


B.

Resolution of full HD cameras is known, whereas megapixel cameras can vary.


C.

Megapixel cameras generally have higher frame rate than full HD cameras.


D.

Megapixel camera resolutions are common among different camera vendors.


E.

Megapixel cameras can have higher resolution than full HD cameras.


Questions # 4:

Where should outdoor surveillance cameras be mounted when sources of light are nearby?

Options:

A.

Cameras should be mounted lower than the light source.


B.

Cameras should be mounted in parallel with the nearest light source.


C.

Cameras should be mounted above the light source.


D.

Location does not matter, as long as the cameras are day/night capable.


Questions # 5:

Order the following resolutions, by pixel count, from lowest to highest.

Options:

A.

D1, HD, QCIF, CIF


B.

D1, CIF, 4CIF, HD


C.

QCIF, CIF, D1, HD


D.

QCIF, D1, CIF, HD


Questions # 6:

On a converged network infrastructure, which Layer 2 technology can be easily enabled and configured to ensure separation of video surveillance traffic on the network from other sources (for example, voice, email, and web browsing)?

Options:

A.

IP routing


B.

firewall


C.

QoS


D.

VLAN


Questions # 7:

Which camera and lens setup is correct to use IR lighting?

Options:

A.

color camera with IR corrected lens


B.

a camera with day/night mode and IR corrected lens


C.

a camera with day/night mode and varifocal lens


D.

color camera with varifocal lens


Questions # 8:

In addition to bandwidth, which factors should be considered when designing an IP network capable of delivering high-quality surveillance video in real time?

Options:

A.

minimize jitter and maximize latency


B.

minimize latency and maximize jitter


C.

minimize both jitter and latency


D.

maximize both jitter and latency


Questions # 9:

What is the correct camera and lens setup for the use of IR lighting?

Options:

A.

Color camera with IR corrected lens


B.

A camera with day/night mode and IR corrected lens


C.

A camera with day/night mode and varifocal lens


D.

Color camera with varifocal lens


Questions # 10:

Why would a Cisco IP camera show clear, but black and white, video images?

Options:

A.

The IR cut filter is in place.


B.

The camera is not streaming the color data.


C.

The camera has switched to night mode.


D.

The camera is not getting enough power.


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