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Cisco 648-238 Exam - Cheat-Test.com

Free 648-238 Sample Questions:

Q: 1
Order the following resolutions, by pixel count, from lowest to highest.
A. D1, HD, QCIF, CIF
B. D1, CIF, 4CIF, HD
C. QCIF, CIF, D1, HD
D. QCIF, D1, CIF, HD
Answer: C

Q: 2
What are the two differences between interlaced and progressive scan video? (Choose two.)
A. Progressive scan video is generally better with fast-moving objects
B. Interlaced video is generally better with fast-moving objects
C. Interlaced video is constructed out of alternating odd and even lines
D. Progressive scan video is constructed out of alternating odd and even lines
Answer: A,C

Q: 3
Where should outdoor surveillance cameras be mounted when nearby sources of light are present?
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.
Answer: A

Q: 4
What is the correct camera and lens setup for the use of IR lighting?
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
Answer: B

Q: 5
Which switch port capability is recommended for an MSP server?
A. Server switch ports should have 10/100 Mb capability
B. Server switch ports should have 1000 Mb capability
C. Server switch ports should have 10 Gb capability
D. Servers should be connected to PoE-capable switches
Answer: B

Q: 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 (such as voice, email, and web browsing)?
A. IP routing
B. Firewall
C. QoS
D. VLAN
Answer: D


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