network addressing

Term Definition

Decimal Numbering System

The decimal numbering system is the most used number system across the world. Decimal is a base-10 number system that consists of the digits 0,1,2,3,4,5,6,7,8,9.

Binary Numbering System

Binary is the number system that computers and most electronic systems use. Because these systems work on electricity, there are only two states, on and off. This is represented using the numbers 1 and 0.

Hexadecimal Numbering System

A base-16 number system that consists of the decimal numbers 0-9 and also uses letters A-F to represent values 10-15.

MAC address

A 48-bit physical address that is a unique identifier for all network adapters.

Logical address

Network addresses assigned by software.

IPv4 address

A 32-bit logical address that consists of four decimal numbers separated by a dot that can range from 0 to 255 (ex. 192.168.1.50).

Subnet mask

Used to identify which octets in the IPv4 address are the host ID and which are the network ID.

Default gateway

Responsible for forwarding data packets to destinations outside of the network.

IPv4 address class

Identifies the range of IP addresses and the default subnet mask used for the range.

Automatic Private IP Addressing (APIPA)

A feature that allows a device to automatically assign itself an IP address on the 169.254.0.0 network when a DHCP server or manual configuration is unavailable.

IPv6 address

A 128-bit address made up of eight 16-bit blocks.

Unicast address

An address assigned to a single interface for the purpose of allowing one host to send and receive data. Packets sent to a unicast address are delivered to the interface identified by that address.

Multicast address

An address that represents a dynamic group of hosts. Packets sent to a multicast address are sent to all interfaces identified by that address.

Anycast address

A unicast address that is assigned to more than one interface, typically belonging to different hosts.

Exam Objective

CompTIA A+ 220-1101

2.5 Given a scenario, install and configure basic wired/wireless small office/home office (SOHO) networks.

• Internet Protocol (IP) addressing

  • Pv4

    • Private addresses

    • Public addresses

  • IPv6

  • Automatic Private IP Addressing (APIPA)

  • Static

  • Dynamic

  • Gateway

CompTIA A+ 220-1102

1.6 Given a scenario, configure Microsoft Windows networking features on a client/desktop.

• Client network configuration
  

  • Internet Protocol (IP) addressing scheme

  • Domain Name System (DNS) settings

  • Subnet mask

  • Gateway

  • Static vs. dynamic

• Public network vs. private network

• File Explorer navigation – network paths