Computer Networking
The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?

NVRAM should be erased and the router restarted.
Flash should be erased and the router restarted.
RAM should be erased and the router restarted.
The new configuration should be entered and saved.

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Computer Networking
How does a host on an Ethernet LAN know when to transmit after a collision has occurred?1. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.2. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.3. You can improve the CSMA/CD network by adding more hubs.4. After a collision, the station that detected the collision has first priority to resend the lost data.5. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.

2 and 4
1 and 3
2 and 5
1,3 and 4

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Computer Networking
Which of the following summation operations is performed on the bits to check an error-detecting code?

Coder-decoder
Checksum
Codec
Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions
Attenuation

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