Network + 3.4 - Implement IPv4 and IPv6 Network Services

Dynamic Addressing

Automatically assigns IP configuration to devices using DHCP

Dynamic Host Configuration Protocol (DHCP)

Protocol that dynamically assigns IP addresses, subnet mask, gateway, and DNS.

DHCP Reservations

Assigns the same IP to a device based on its MAC address

DHCP Scope

Defined range of IP addresses available for DHCP assignmentsL

Lease Time

Length of time a device can use an assigned IP address

DHCP Options

Extra configuration values like DNS, NTP, and WINS provided by DHCP

DHCP Relay

Fowards DHCP requests across subnets to remote DHCP servers

Exclusion Range

IP addresses within a scope that DHCP will not assign

Stateless Address Autoconfiguration SLAAC

IPv6 method allowing devices to self-assign addresses using router advertisements.

Name Resolution

Process of translating domain names into IP addresses.

Domain Name System (DNS)

Hierarchical system that maps domain names to IP addresses.

Domain Name System Security Extensions (DNSSEC)

Adds authentication and integrity to DNS responses.

DoH

Encrypts DNS traffic using HTTPS.

DoT

Encrypts DNS traffic using TLS.

A Record

Maps a hostname to an IPv4 address.

AAAA Record

Maps a hostname to an IPv6 address.

Canonical Name (CNAME) Record

Alias that points to another domain name.

Mail Exchange (MX) Record

Specifies mail servers for a domain.

Text (TXT) Record

Stores text data for verification and security purposes.

Nameserver (NS) Record

Identifies authoritative DNS servers for a domain.

Pointer (PTR) Record

Maps an IP address to a hostname (reverse lookup).

DNS Zones Types

Portions of the domain name space in the DNS, which are managed by a specific entity or administrator

DNS Forward Zone

Resolves hostnames to IP addresses.

DNS Reverse Zone

Resolves IP addresses to hostnames.

Authoritative Zone

DNS server has final authority over its records.

Non-Authoritative Zone

DNS data obtained from another server or cache.

Primary Zone

Read/write DNS zone containing original records.

Secondary Zone

Read-only copy of a primary zone for redundancy.

Recursive Query

DNS server fully resolves a query on behalf of a client.

Hosts File

Local file mapping hostnames to IP addresses before DNS lookup.

Time Protocols

Essential for ensuring consistent and accurate time across all devices within a network

Network Time Protocol (NTP)

Synchronizes clocks across networks with millisecond accuracy.

Precision Time Protocol (PTP)

Provides nanosecond-level time synchronization on LANs.

Network Time Security (NTS)

Secures NTP using encryption and authentication.