Question: 9
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)?
A. IP routing
B. firewall
C. QoS
D. VLAN
Answer: D
Question: 10
In addition to bandwidth, which factors should be considered when designing an IP network capable of delivering high-quality surveillance video in real time?
A. minimize jitter and maximize latency
B. minimize latency and maximize jitter
C. minimize both jitter and latency
D. maximize both jitter and latency
Answer: C
Monday, 17 September 2018
Cisco 648-238 PDF Sample Questions -Dumps4download
Question: 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
Question: 6
Which two statements about differences between HD or full HD and megapixel cameras are true?
(Choose two.)
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.
Answer: B,E
Question: 7
Where should outdoor surveillance cameras be mounted when sources of light are nearby?
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.
Answer: A
Question: 8
Which camera and lens setup is correct to use 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
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
Question: 6
Which two statements about differences between HD or full HD and megapixel cameras are true?
(Choose two.)
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.
Answer: B,E
Question: 7
Where should outdoor surveillance cameras be mounted when sources of light are nearby?
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.
Answer: A
Question: 8
Which camera and lens setup is correct to use 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
Cisco 648-238 Sample Questions Download-Dumps4download
Question: 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
Question: 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
Question: 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
Question: 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
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
Question: 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
Question: 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
Question: 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
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