1) Bus - A single bus cable connects the

            computers in a line. 

2) Ring - Connects all of the computers

              on the network with with a

              central ring of cable.

3) Star - Use a central connection for all

              computers on the network. 

4) Mesh - Every computer connects to

               every other computer via 2 or

               more routes.

5) Point-to-Multipoint - Sever is the

                                     central point.

6) Point-to-point - Computer to

                             Computer.

- The maximum amount of data that goes through the cable per second is called the bandwidth. 

- UTP cables are rated to handle a certain frequency, such as 100 MHz or 1000 MHz, which originally translated as the maximum throughput for a cable. Each cycle, each hertz basically, accounts for one bit of data. For example, a 10 million cycle per second (10 MHz) cable could accommodate 10 million bits per second (10 Mbps)—1 bit per cycle.

1) Coaxial 

2) Twisted Pair

3) Fiber Optic

1) They have a central conductor wire surrounded by insulating material.

2) Shields data from Electro-magnetic interference (EMI).

3) Two types:

1. RG-59: Used for television, but was too thin for networking.
    
2. RG-6: Predominant cabling used today

4) All coaxial cables have an RG rating, measured in Ohms, which checks the wire's resistance/impedance.

1) Shielded Twisted Pair - Twisted pairs

of wire surrounded by shielding to protect from EMI (crosstalk). Rare. Not as needed.

2) Unshielded Twisted Pair (UTP) -

    - Twisted wires surrounded by a plastic

       jacket.

    - UTP cables handle different amounts

      of frequencies, rated in Megahertz

      (Mhz), and are thusly placed in

      category ratings (CAT). 

What are the primary UTP cables used today?

What are their maximum frequencies, bandwidth?

Cat 3 --- 16 MHz --- 16 Mbps

Cat 5 --- 100 MHz --- 100 Mbps

Cat 5e --- 100 MHz --- 1,000 Mbps

Cat 6 --- 250 MHz --- 10,000 Mbps

None of these cables can go over 100 meters.

1) Transmits data through light rather than  

     through electricity.

2)  Multimode – Uses LEDs to send light signals. 

                    Single-mode – Uses Laser light to send signals.

1) Can transmit data over long ranges (over 10+ kilometers!)

2) Useful in high EMI areas

3) Hard to hack into

Which of the following topologies require termination?

A) Star

B) Bus

C) Mesh

D) Ring

Bus topology

In a bus topology, all computer connect to the network via a main line. The cable must be terminated at both ends to prevent signal reflection.

Of the topologies listed, which one is the most fault tolerant?

A) Point-to-point

B) Bus

C) Star

D) Ring

Star

Only star topology has fault tolerance.

What is the term used to describe the interconnectivity of network components?

A) Segmentation

B) Map

C) Topology

D) Protocol

Coaxial cables all have a(n) ________ rating.

A) Resistance

B) Watt

C) Speed

D) Ohm

All coaxial cables have an Ohm rating.

RG-59 and RG-6 are both rated at 75 Ohms.

Which of the following is a type of coaxial cable?

A) RJ-45

B) RG-59

C) BNC

D) Barrel

Ring topology connects nodes with a central ring of cable.

Which network topology is most likely seen only in wireless networks?

A) Star

B) Bus

C) Ring

D) Mesh

Which of the following is a duplex fiber-optic connection?

A) LC

B) RJ-45

C) ST

D) SC