Cabling

Q1. What are the main types of computer cabling?

• Twisted pair cable
• Coaxial cable
• Fiber-optic cable

Q2. What is Twisted pair?

• Twisted pair is made up of insulated copper wire twisted around each other to form wire pairs. It helps in reducing the noise from external sources and crosstalk on multi-pair cables.

Q3. How many classes of twisted pair are available?

• Unshielded Twisted pair (UTP)
• Shielded Twisted pair (STP)

Q4. Category 3 and Category 5 cables belong to which class of Twisted pair?

• Unshielded Twisted pair (UTP)

Q5. How many Twisted pairs of copper wire are there in Category 5 cable?

• The Category 5 cable contains four Twisted pairs of copper wire that are capable of transmission of up to 100 Mbps

Q6. How is STP cable different from Coaxial cable?

• In STP cable, the Twiosted pair is wrapped in foill to decrease external interference and electromagnetic radiations.
• In Coaxial cable, the center cable is insulated by a plastic-foam, a second conductor, a foil wrap, and an external plastic tube.

Q7. List the commonly used coaxial cable?

• 10Base5(Ethernet)- RG8 and RG11
• 10Base2(Ethernet)- RG58
• Cable TV- RG59
• ARCnet- RG62

Q8. What is fiber-optic cable?

• Fiber optic cable is used to transmit light signals over long distances. Ot has the ability to carry large amount of bandwidth over a greater distance at faster speeds. Fiber-optic cable has the core in the center, which is the glass fiber that carries the light signals. The cladding layer surrounds the core and acts as a mirror allowing the light to reflect off it as the light travels. Outermost layer of the cable is buffer coating, which protects both fiber and cladding and prevents signals from leaking out of the cable. It also protects the fiber from damage and moisture.

Q9. Explain the function of fiber-optic cable?

• The fiber-optic cable uses light pulses to carry and transmit data from point to point. Pulses of light are sent from one end pf the cable to the other end. The pulses represent data being transmitted that a decoder at the other end of the cable can decode into information. 

Q10. What are the two different types of Fiber-optic cables?

• Single-mode cable: It has one glass Fiber strand.
• Multi-mode cable: It has two or more strands along the line. These are physically larger when compared to single-mode fibers.

Q11. How long is 10Base5 Ethernet cable?

• 500 meters approximate.

Q12. What is High Definition Multimedia Interface (HDMI)?

• HDMI is an interface standard used for audio-visual equipment, such as high-definition television and DVD player. It simplifies cabling and provides users with high-quality home theater experience by delivering crystal-clear all-digital audio and video through a single cable. 

Q13. What is the bandwidth of HDMI cable?

• up to 5 Gigabytes per second.

Q14. What is Ethernet cord connector?

• Ethernet cord connector is a device to connect two Ethernet cables. It is a small box that connects two shorter Ethernet cables.

Q15. What is crossover cable?

• Crossover cable is used to connect same type of devices. It can be used to:

           -Connect two computers directly.           
           -Connect a router's LAN port to  a switch/hub's normal port, which is used for           
             expanding network
           -Connect two switches.hubs by using normal port in both switches/hubs


Q16. What is a Straight cable?

• Straight cable is used to connect different type of devices. It can be used to:

           -Connect a computer to Switch/hub
           -Connect a computer to a cable/DSL modem's LAN port
           -Connect a router's WAN port to a cable/DSL modem's LAN port
           -Connect a Rot\uter's LAN port to a switch/hub's uplink port