Computer Science

Question 1

High level languages
Low level languages

Answer 1

Python, C#, Java
Machine code, assembly code

Question 2

What are the two types of translator

Answer 2

Compilers
Interpreters

Question 3

what is compiling

Answer 3

taking the whole code at the same time

Question 4

what is interpreting

Answer 4

takes code line by line

Question 5

what’s an IDE

Answer 5

the program that allows you to code in high level languages

Question 6

features of IDEs

Answer 6

source code editors
interpreters
automation tools
debugger
compiler
auto-documentation

Question 7

Discuss the suitability of the different types of translator for a programmer during development and after development. [5]

Answer 7

During development, its essential that errors are quickly spotted. Interpreters highlight errors line by line. However a compiler would be better suited to nearer to the end due to it being able to execute it all in one go

Question 8

What is a transistor?

Answer 8

microscopic devices that switch on and off the electrical signals or power (1 and 0)

Question 9

What is the output of (NOT(1 AND 0)) AND 1

Answer 9

1

Question 10

How many rows in a truth table of 3 inputs (for AND and OR)

Answer 10

2^3 = 8

Question 11

what is input sanitation

Answer 11

removing unwanted characters and making sure everything is checked, prevents any issues

Question 12

define whitelist

Answer 12

a list of data that tells the program what to accept, everything else is rejected

Question 13

define blacklist

Answer 13

a list of data telling the program what NOT to accept, it accepts everything else (less secure)

Question 14

define authentication

Answer 14

a defence strategy (using whitelist) only allows specific users to use the account

Question 15

what is iterative testing

Answer 15

testing the code line by line

Question 16

what is terminal/final testing

Answer 16

the final check to see a program is working properly

Question 17

what is a syntax error

Answer 17

mistakes in the way a code is written

Question 18

what is a logic error

Answer 18

a bug in the program that causes it to operate incorrectly

Question 19

normal data

Answer 19

correct data

Question 20

boundary data

Answer 20

data the is the min/max

Question 21

invalid data

Answer 21

values higher or lower than the expected range

Question 22

erroneous data

Answer 22

values that the program cant accept

Question 23

what is DNS

Answer 23

servers share the task of keeping track of all the IP domain names

Question 24

what is HTTP(S)

Answer 24

hypertext transfer protocol (secure) for retrieving info from servers across the world wide web

Question 25

what is FTP

Answer 25

File transfer protocol is a method of transferring files across the internet

Question 26

explain SMTP

Answer 26

simple mail transfer protocol used for sending emails

Question 27

explain POP

Answer 27

post office protocol is responsible for retrieving emails from the email server and then after reading it deletes it off the server

Question 28

explain IMAP

Answer 28

another email protocol responsible for retrieving emails from servers, IMAP leaves the email in the server (different from POP)

Question 29

what is an IP address

Answer 29

your unique access address for accessing the web

Question 30

what is a MAC address

Answer 30

device address