Chapter 6: Networking Fundamentals

 

1. D. Companies that want to ensure the safety and integrity of their data should use fiber-optic cable because it is not affected by electromagnetic or radio-frequency interference. Even though some copper cables have shielding, they are not immune to EMI or RFI. This eliminates twisted-pair and coaxial. CSMA/CD is an access method, not a cable type.
2. C. Coaxial cable can use BNC connectors and F connectors. RG-6 and RG-59 are coaxial standards. SC is a fiber-optic connector.
3. C. A crossover cable will flip pins 1 and 3 on each end. Therefore, this end needs to have the white/orange wire as pin 1. The correct order for this cable should be white/orange, orange, white/green, blue, white/blue, green, white/brown, brown.
4. B. Carrier Sense Multiple Access with Collision Detection (CSMA/CD) specifies that the NIC pause before transmitting a packet to ensure that the line is not being used. If no activity is detected, then it transmits the packet. If activity...