Assignment: Applying Concepts
Scenario: Stingy IP Camera
Suppose you arrive at work one morning to find a new service ticket waiting in your inbox. The day before, two new surveillance IP cameras were installed outside a data closet in a newly renovated office building. These IP cameras transmit their feed over the network to the Security Department. Security is receiving the feed from one camera with no problem. However, they're not getting anything from the other camera. As far as the security system is concerned, the camera doesn't exist.
After confirming the lack of data feed in the monitoring program, you ping the camera but get no response. Knowing the camera is new, your next stop is the camera itself. Knowing that rebooting a device often solves problems, your first move is to pull out the ladder, climate up to the camera, and hit the power button to reboot it. You've brought along your laptop and, while the camera is rebooting, you connect to the LAN in that building to check the feed again. From this vantage point, the camera is working fine. The feed is coming through clearly now. Thinking you've solved the problem, you return to your desk and notify security that the camera is fixed. Unfortunately, they disagree. When you pull up the security program again, the camera feed isn't there. You know it was working a few minutes ago back at the camera. So why isn't it visible in the security program?
As you do a little more exploration, here are some of the things you find:
• The feed from the other camera installed at the same time on the same IAN is still coming through fine.
• All the other nodes you've tested on that LAN are fully functional and responding to
• There are no errors reported on the LAN that hosts the security program.
Why is the camera's transmission not making it to the security program? Below are several possible resolutions. Select the best one and explain your reasoning:
a. The Ethernet cable from the camera to the network is malfunctioning and should be replaced.
b. The security program doesn't recognize the authenticity of the camera's data, so a static route should be configured from the camera to Security's LAN.
c. The switch for the cameras' LAN is inadequate for the amount of traffic on the LAN now that the new cameras have been added. The switch should be replaced with a more powerful device.
d. The camera's NIC is malfunctioning and should be replaced.
e. The camera's default gateway is misconfigured or unreachable and should be corrected.
f. The Ethernet cable leading from the camera to the network is placed too closely to some nearby fluorescent lights, which is causing interference in the transmission. The cable should be relocated farther away from the lights.
g. Power fluctuations in that building's data closet are causing intermittent problems with the devices on that LAN. The UPS servicing that closet should be replaced.