TestOut Network Pro Ch 2 Exam Questions With 100% Correct Answers

TestOut Network Pro Ch 2 Exam Questions With 100% Correct Answers Two wires carry datasignals - answerone conductor carries a positive signal; the other carries a negative signal. They are made of 22 or 24 gauge copper wiring Plenum Cable - answeris fire resistant and non-toxic; it must be used when wiring above ceiling tiles PVC cable - answercannot be used to wire above ceilings, because it is toxic when burned. Shielded Twisted Pair (STP) - answerhas a grounded outer copper shield around the bundle of twisted pairs or around each pair. This provides added protection against EMI. Unshielded Twisted Pair(UTP) - answerdoes not have a grounded outer copper shield. UTP cables are easier to work with and are less expensive than shielded cables. Phone Cable(RJ11) - answeris used to connect a PC to a phone jack in a wall outlet to establish a dial-up Internet connection. It has two pairs of twisted cable (a total of 4 wires). Cat 3 (RJ45) - answer3 is designed for use with 10 megabit Ethernet or 16 megabit token ring. Cat 5(RJ45) - answersupports 100 megabit Ethernet and ATM networking. Cat 5 specifications also support gigabit (1000 Mb) Ethernet Cat 5e (RJ45) - answeris similar to Cat 5 but provides better EMI protection. It supports 100 megabit and gigabit Ethernet. Cat 6(RJ45) - answersupports 10 Gbps Ethernet and high-bandwidth, broadband communications. Cat 6 cables often include a solid plastic core that keeps the twisted pairs separate and prevents the cable from being bent too tightly. Cat 6a(RJ45) - answeris designed to provide better protection against EMI and crosstalk than Cat 6 cabling. Cat 6a provides better performance than Cat 6, especially when used with 10 Gbps Ethernet. RJ11 - answer• Has 4 connectors • Supports up to 2 pairs of wires • Uses a locking tab to keep the connector secure in an outlet • Used primarily for telephone wiring RJ45 - answer• Has 8 connectors • Supports up to 4 pairs of wires • Uses a locking tab to keep the connector secure in an outlet • Used for Ethernet and some token ring connections Coaxial Cable - answercable is an older technology that is usually implemented with a bus topology. It is not suitable for ring or star topologies, because the ends of the cable must be terminated. It is composed of two conductors that share a common axis within a single cable Coaxial Cable Advantages - answer• Highly resistant to EMI (electromagnetic interference) • Highly resistant to physical damage Coaxial Cable Disadvantages - answer• More expensive than UTP • Inflexible construction (more difficult to install) • Unsupported by newer networking standards Inner conductor( coaxial cable is built with) - answercarries data signals. It is made of copper or copper coated with tin. Mesh Conductor ( coaxial cable is built with) - answerconductor is a second physical channel that also grounds the cable. It is made of aluminum or copper coated tin Insulator (coaxial cable is built with) - answersurrounds the inner conductor and keeps the signal separated from the mesh conductor. It is made of PVC plastic. Mesh( coaxial cable is built with) - answerthat surrounds the insulator and grounds the cable. It is made of aluminum or copper coated tin. Cable encasement( coaxial cable is built with) - answersurrounds and protects the wire. It is made of PVC plastic. RG 58 - answerUses 10Base2 Ethernet networking (also called Thinnet) Resistance rate; 50ohms RG 59 - answerUses Cable TV and cable networking Resistance rate; 75ohms RG 6 - answerUses Cable TV, satellite TV, and cable networking RG-6 has less signal loss than RG-59 and is a better choice for networking applications, especially when longer distances (over a few feet) are involved. Resistance rating; 75ohms RG 8 - answerUses 10Base5 Ethernet networking (also called Thicknet) Resistance rate; 50ohms F Type - answer• Twisted onto the cable • Used to create cable and satellite TV connections • Used to connect a cable modem to a broadband cable connection BNC - answer• Molded onto the cable • Used in 10Base2 Ethernet networks AUI - answer• Is a DB15 serial connector • Used in 10Base5 Ethernet networks To connect computer using fiber optic cables - answertwo fiber strands One strand transmits signals, and the other strand receives signals Components of fiber optic cabling - answer• The core carries the signal. It is made of plastic or glass. • The cladding maintains the signal in the center of the core as the cable bends. • The sheathing protects the cladding and the core. Fiber optic cabling advantages - answer• Totally immune to EMI (electromagnetic interference) • Highly resistant to eavesdropping • Supports extremely high data transmission rates • Allows greater cable distances without a repeater Fiber optic cabling disadvantages - answer• Very expensive • Difficult to work with • Special training required to attach connectors to cables Single Mode - answer• Data transfers through the core using a single light ray (the ray is also called a mode). • The core diameter is around 10 microns.