Network Configurations 2.1, 2.5, &2.6 Flashcards
Responsible for putting frames in the physical network’s transmission media
Link / Network Interface Layer
Used to address packets and route them across the network
Internet Layer
Shows how to send the packets
Transport Layer
Contains all the protocols that perform higher level functions
Application Layer
A logical identifier for a group of hosts in a computer network
Multicast Address
Allows for borrowing some of the host bits and reassigning them to the network portion
Classless Inter-Domain Routing (CIDR)
Default subnet mask for a given class of IP addresses
Classful Mask
can be accessed over the internet and is assigned to the network by an internet service provider
Public (Routable)
Can be used by anyone any time, but only within their own local area network
Private IP ranges include those that start with either 10,172, or 192
Private (Non-Routable)
Creates a loopback to the host and is often used in troubleshooting and testing network protocols on a system
Loopback Address (127.0.01)
manually type the IP address for the host, its subnet mask, default gateway, and DNS server
Static Assignment
Used when a device doesn’t have a static IP address or cannot reach a DHCP server
Automatic Private IP Addresses (APIPA)
Dynamically assigns IP addresses and allows a workstation to load a copy of boot image to the network
Bootstrap Protocol (BOOTP)
Assigns an IP based on an assignable scope or addresses and provides the ability to configure other options
Dynamic Host Control Protocol (DHCP)
Manages the IPs being assigned and returned over time
IP Address Management
Used when a device does not have a static IP address or cannot reach a DHCP server
Automatic Private IP Addressing (APIPA)
New technology that provides the same features as APIPA
Zero Configuration (ZeroConf)
Provides an IP address to every machine on the network and eliminates configuration errors
Dynamic Host Configuration Protocol (DHCP)
List of valid IP addresses available for assignment or lease to a client computer or endpoint device on a given subnet
Scope
Excludes some IP address from being handed to devices unless they meet a certain condition
DHCP Reservation
Helps network clients find a website using human-readable hostnames instead of numeric IP addresses
Domain Name System (DNS)
Domain name under a top level provider
Fully Qualified Domain Name (FQDN)
Contains the FQDN with the method of accessing inf
Uniform Resource Locator (URL)
DNS record that identifies the host authorized to send mail for domain
Sender Policy Framework (SPF)
Provides the cryptographic authentication mechanism for mail using a public key published as a DNS record
DomainKeys Identified Mail (DKIM)
Framework that is used for proper application of SPF and DKIM, utilizing a policy that’s published as a DNS record
Domain-based Message Authentication, Reporting & Conformance (DMARC)
Allows cloud instances on the same network access each other using internal DNS names
Internal DNS
Records created around the domain names from a central authority and used on the public internet
External DNS
Types of DNS server that stores all the DNS records for a given domain
Nameserver
Tells the DNS resolver how long to cache a query before requesting a new one
Time to Live (TTL)
Makes a local copy of every DNS entry it resolves as connected to websites
DNS Resolver/DNS Cache
DNA server communicates with several other DNS servers to hunt down the IP address and return to the client
Recursive Lookup