Networking Services Flashcards
The most common resource record, used to point a certain domain name at a certain IPv4 IP address
A RECORD
A technique that’s used to route traffic to different destinations depending on factors like location, congestion, or link health
ANYCAST
A range of IP addresses is set aside for assignment purposes
AUTOMATIC ALLOCATION
They are generally provided by an ISP or your local network, and their purpose is to store domain name lookups for a certain amount of time
CACHING AND RECURSIVE NAME SERVERS
A resource record used to map one domain to another
CNAME
The process by which a client configured to use DHCP attempts to get network configuration information
DHCP DISCOVERY
A global and highly distributed network service that resolves strings of letters, such as a website name, into an IP address
DOMAIN NAME SYSTEM (DNS)
A portion of space in the Domain Name System (DNS) that is controlled by an authoritative name server
DNS ZONES
Used to demarcate where control moves from a top-level domain name server to an authoritative name server
DOMAIN
A website name, the part of the URL following www.
DOMAIN NAME
A range of IP addresses is set aside for client devices and one of these IPs is issued to these devices when they request one
DYNAMIC ALLOCATION
Requires a manually specified list of MAC address and the corresponding IPs
FIXED ALLOCATION
When you combine all the parts of a domain together
FULLY QUALIFIED DOMAIN NAME
The NAT obscures the sender’s IP address from the receiver
IP MASQUERADING
It stands for the mail exchange and this resource record is used in order to deliver mail to the correct server
MX RECORD
This process of using DNS to turn a domain name into an IP address
NAME RESOLUTION
A mitigation tool that lets organizations use one public IP address and many private IP addresses within the network
NETWORK ADDRESS TRANSLATION (NAT)
It indicates other name servers that may also be responsible for a particular zone
NS RECORD
Used to keep all computers on a network synchronized in time
NTP SERVERS
It resolves an IP to a name
POINTER RESOURCE RECORD
A technique where specific destination ports can be configured to always be delivered to specific nodes
PORT FORWARDING
A technique where the source port chosen by a client, is the same port used by the router
PORT PRESERVATION
A server that acts on behalf of a client in order to access another service
PROXY SERVICE
It is very similar to an A record except that it returns in IPv6 address instead of an IPv4 address
QUAD A (AAAA) RECORD
Servers that perform full DNS resolution requests
RECURSIVE NAME SERVERS
They let DNS resolvers ask for an IP, and get the FQDN associated with it returned
REVERSE LOOKUP ZONE FILES
A service that might appear to be a single server to external clients, but actually represents many servers living behind it
REVERSE PROXY
It is a concept that involves iterating over a list of items one by one in an orderly fashion
ROUND ROBIN
A service record used to define the location of various specific services
SRV RECORD
A declaration of the zone and the name of the name server that is authoritative for it
START OF AUTHORITY
The top level of the DNS or the last part of a domain name. For example, the “com” in www.weather.com
TOP LEVEL DOMAIN (TLD)
An 8-bit field that indicates how many router hops a datagram can traverse before it’s thrown away
TIME-TO-LIVE FIELD (TTL)
A technique where more than just a username and password are required to authenticate. Usually a short-lived numerical token is generated by the user through a specialized piece of hardware or software
TWO-FACTOR AUTHENTICATION
It stands for text and was originally intended to be used only for associating some descriptive text with a domain name for human consumption
TXT RECORD
There are five primary types of DNS servers; caching name servers, recursive name servers, root name servers, TLD name servers, and authoritative name servers
TYPES OF DNS SERVERS
A technology that allows for the extension of a private or local network, to a host that might not work on that same local network
VIRTUAL PRIVATE NETWORK (VPN)
Simple configuration files that declare all resource records for a particular zone
ZONE FILES
