IGCSE Paper 1 (Part 2) - Computer Science

Add 1011101110 and 1100011011.

What does a character set mean?

• It is a way of encrypting text document.

• It is the set of activities of connecting computer devices.

• It is the set of mental and moral qualities distinctive to an individual.

• It is an encoding system to let computers know how to recognize character, including letters, numbers, punctuation marks, and whitespace.

Convert 179 to binary.

Convert denary -35 in binary using two's complement.

This method of error checking is similar to a traditional parity check except the data is arranged in a virtual table with parity bits added to each row and column.

It is a type of encryption where the 

 used for encrypting a message is the same one used for decrypting the message.

• Symmetric encryption

• Asymmetric encryption

• Dynamic encryption

• Static encryption

Two separate keys are used. One key is used for encryption and the other key is used for decryption, this is called ___________ encryption.

When a device is assigned a _______ IP address, the address does not change.

• solid

• permanent

• dynamic

• static

Most devices use _______ IP addresses, which are assigned by the network when they connect and change over time.

In a cycle to run programs, an instruction is _______ from RAM to the CPU.