E Mich Basic Questions

Question 1

What does HTML stand for?

Answer 1

Hypertext Markup Language

Question 2

What does MAC stand for?

Answer 2

Media access control

Question 3

What is a MAC address? explain the two parts of it.

Answer 3

1. Its an ID code that’s assigned to a network adapter or any device with built-in networking capability, such as a printer
2. The OUI represents the manufacturer
3. The NIC represents the specific portion (like a serial number) made by the manufacturer.
   Basically = serial number

Basicly= Identifies the device on a network

Question 4

What does USB stand for?

Answer 4

Universal Serial Bus

Question 5

Name two modes of data transmission.

Answer 5

Simplex

Half duplex

Full duplex

Question 6

Explain the term Simplex Data Transmission

Answer 6

A communication channel that sends information one direction only

Question 7

Explain the term Half Duplex Data Transmission

Answer 7

Transmission of data in just one direction at a time

Question 8

Explain the term Full Duplex Data Transmission

Answer 8

Transmission of data in two directions simultaneously

Question 9

Highlight a problem with parallel data transmission

Answer 9

When needing to be used for longer distances some of the data can get lost

Question 10

What is ARQ?

Answer 10

Automatic Repeat reQuest. Error method for data transmission

Question 11

Explain how echo checks work

Answer 11

The data received is stored + transmitted back to its point of origin, where it is compared with its original data

Question 12

What does the term ISP stand for?

Answer 12

Internet Service Provider

Question 13

One reason why we use binary to represent data in computers?

Answer 13

Because transistors have 2 states. Therefore 1 and 0 would work best

Question 14

What is an algorithm?

Answer 14

A set of instructions used to solve a problem. You can use a flow chart or pseudo code for it

Question 15

Limitations of ASCII

Answer 15

1. ASCII is 7 bit binary therefore the highest number of characters it can represent is 128
2. Many languages throughout the world have more than 128 characters

Question 16

Why are logical errors often the most difficult to find?

Answer 16

The computer will not often spot them, just run them. It does not appear to do what you asked it to do

Question 17

What is a Boolean?

Answer 17

associated with conditional statements, which allow different actions and change control flow

Question 18

AND gate

Answer 18

000
010
100
111

Question 19

Or gate

Answer 19

000
011
101
111

Question 20

NOT gate

Answer 20

01

10

Question 21

NAND gate

Answer 21

001
011
101
110

Question 22

NOR gate

Answer 22

001
010
100
110