Sherpa

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Computer Science

GCSE · OCR

QuestionsFlashcards

Identifying & Preventing Threats to Computer Systems & Networks
- Forms of Attack on a Network
  8
- Methods of Preventing a Network Attack
  10

Operating Systems & Utility Software
- The Purpose & Functionality of Operating Systems
  7
- The Purpose & Functionality of Utility Software
  6

Ethical, Legal, Cultural & Environmental Impact
- Impacts of Digital Technology on Wider Society
  7
- Legislation in Computer Science
  8

Boolean Logic Diagrams
- Boolean Logic Diagrams
  9
- Combining Boolean Operators
  7

IP Addressing & MAC Addressing Flashcards

All 6 cards in this deck

What is the format of an IPv4 address?: Four denary numbers (octets) separated by dots, each in the range 0–255.
e.g. 192.154.21.2
True or false? 258.0.0.3 is a valid IPv4 address.: False. Each of the four parts must be no greater than 255.
What is the format of an IPv6 address?: Eight groups of four hexadecimal digits separated by colons.
Why was IPv6 introduced to replace IPv4?: IPv4's 4.3 billion addresses have run out as more devices connect to the internet; IPv6 provides vastly more addresses.
What is a MAC address and what format does it take?: A unique serial number assigned to a network interface controller (NIC), written as a string of hexadecimal numbers, used to uniquely identify a device on a network.
Give two differences between an IP address and a MAC address.: An IP address is assigned when a device joins a network and changes from network to network; a MAC address is assigned by the NIC manufacturer and cannot be changed.