PART I

Bit - A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1. Although computers usually provide instructions that can test and manipulate bits, they generally are designed to store data and execute instructions in bit multiples called bytes. In most computer systems, there are eight bits in a byte.

Byte - is a unit of data that is eight binary digits long. A byte is the unit most computers use to represent a character such as a letter, number, or typographic symbol (for example, "g", "5", or "?"). A byte can also hold a string of bits that need to be used in some larger unit for application purposes (for example, the stream of bits that constitute a visual image for a program that displays images or the string of bits that constitutes the machine code of a computer program).

Kb (kilobit) - is a unit of information, abbreviated kbit (or kb).The standard definition is 1 kilobit = 103 bit = 1,000 bit. In the context of storage-memory and address-space sizes, the alternative binary definition of 210 = 1,024 bit is occasionally used (see Binary prefix), although this usage is ambiguous.

KB (kilobyte) - As a measure of computer memory or storage, a kilobyte (KB or Kbyte*) is approximately a thousand bytes (actually, 2 to the 10th power, or decimal 1,024 bytes).

Mb (megabit) - In data communications, a megabit is a million binary pulses, or 1,000,000 (that is, 106) pulses (or "bits"). It's commonly used for measuring the amount of data that is transferred in a second between two telecommunication points. For example, a U.S. phone company T-carrier system line is said to sustain a data rate of 1.544 megabits per second. Megabits per second is usually shortened to Mbps.

MB (megabyte) - is a unit of measurement used to quantify computer memory and storage. One megabyte is the equivalent of approximately one million bytes and one thousand kilobytes (the exact conversion is 1 megabyte=1,048,576 bytes and 1,024 kilobytes in binary measurement).

GB (gigabyte) - Is composed of One billion bytes.

TB (terabyte) - Is a measure of computer storage capacity and is 2 to the 40th power or approximately a thousand billion bytes (that is, a thousand gigabytes).

kbps (kilobits per second) - A measure of data transfer. A 56Kbps dial-up modem transfers data at about 7.2 kilobytes (KB) per second.

kBps (kilobytes per second) - Another unit of data transmission is the kilobyte per second (kBps or kbyte/s) and is one-eighth that of a kilobit per second.

Mbps (megabits per second) - Because there are 8 bits in a byte, a transfer speed of 8 megabits per second (8 Mbit/s) is equivalent to 1000000 bytes per second (approximately 977 KiB/s).

MBps (megabytes per second) - Is a unit of data transfer rate that is sometimes used when describing the flow of data to and from a computer storage device.

Gbps (gigabits per second) - Stands for billions of bits per second and is a measure of bandwidth on a digital data transmission medium such as optical fiber. With slower media and protocols, bandwidth may be in the Mbps (millions of bits or megabits per second) or the Kbps (thousands of bits or kilobits per second) range.

Tbps (terabits per second) - In measuring data transmission speed, a terabit is one trillion bits, or 1,000,000,000,000 (that is, 1012) bits. A terabit is used for measuring the amount of data that is transferred in a second between two telecommunication points or within network devices. For example, several companies are building a network switch that passes incoming packets through the device and out again at a terabits-per-second speed.

Hz (hertz) - The hertz (symbol: Hz) is a measure of frequency, informally defined as the number of events occurring per second. It is the basic unit of frequency in the International System of Units (SI), and is used worldwide in both general-purpose and scientific contexts.

MHz (megahertz) - One megahertz is equal to one million cycles per second. It is used to measure transmission speeds of electronic devices. The most common area you will see Megahertz used is in measuring processor clock speed, such as an 800 Mhz Pentium III.

GHz (gigahertz) - One gigahertz is equal to 1,000 megahertz (MHz) or 1,000,000,000 Hz. It is commonly used to measure computer processing speeds. For many years, computer CPU speeds were measured in megahertz, but after personal computers eclipsed the 1,000 Mhz mark around the year 2000, gigahertz became the standard measurement unit. After all, it is easier to say "2.4 Gigahertz" than "2,400 Megahertz."

PART II

Unit...............................Bytes...................................Bits

Bit(b).............................0.125 byte..............................1 bit
Byte (B)........................1 byte......................................8 bits
Kilobyte (KB)................1,024 byte...................................8,192 bits
Megabyte (MB)............1,048,576 byte...........................8,388,608 bits
Gigabyte (GB)..............1,073,741,824 byte.....................67,108,864 bits
Terabyte (TB)............1,099,511,627,776 byte..............8,796,093,022,208

PART III

1. The connection to the Internet can be broken down into which of the following?
Ans: B. Logical connection

2. What is the main circuit board of a computer?
Ans: B. Motherboard

3. What are PCMCIA slots?
Ans: C. Expansion slots for a NIC

4. What is a NIC?
Ans: B. A printed circuit board that provides network communication.

5. Which of the following is/are the resource(s) you need before you intall a NIC?
Ans: D. All of the above

6. Which number system is based on powers of 2?
Ans: D. ASCII

7. The smallest unit of data in a computer?
Ans: C. kpbs

8. A standard measurement of the rate at which data is transferred over a network connection?Ans: D. MHz

9. A unit of frequency; the rate of change in the state or cycle in a sound wave, alternating current, or another cylical waveform?
Ans: C. kbps

10. A unit of measurement that describes the size of a data file, the amount of space on a disk or another storage medium, or the amount of data being tranferred over a network?
Ans: B. Byte