Which type of dns record identifies an email server

The most common DNS record types are: Address Mapping record (A Record)—also known as a DNS host record, stores a hostname and its corresponding IPv4 address. IP Version 6 Address record (AAAA Record)—stores a hostname and its corresponding IPv6 address.

What type of DNS record identifies a mail server?

The most common DNS record types are: Address Mapping record (A Record)—also known as a DNS host record, stores a hostname and its corresponding IPv4 address. IP Version 6 Address record (AAAA Record)—stores a hostname and its corresponding IPv6 address.

What type of DNS resource record is used to identify a server that is authoritative for a zone?

The NS record stands for nameserver record. This shows the authoritative servers the zone. They indicate primary and secondary servers for the zone specified in the SOA record. Zones can contain many NS records, but it should contain at least one NS record for a DNS zone.

Which type of DNS record identifies an email server quizlet?

The AAAA records maps an IPv6 (128-bit) DNS host name to an IP address. The MX record identifies servers that can be used to deliver e-mail.

When your computer first joins an IPv6 network What is the prefix of the IP address the computer first configures for itself?

Explanation. The FE80::/10 address prefix belongs to APIPA addresses, which are inherently auto-configured. That means the device can coordinate itself with the prefix FE80.

Which of the following DNS resource record types resolves authoritative name servers?

DNS RecordDescriptionAAAAMaps domain names to IPv6 addressesCNAMERedirects a domain to a different domainPTRResolves IPv4 or IPv6 addresses to domain namesNSProvides a list of the authoritative name servers responsible for the domain

What is DNS and types of DNS?

DNS stub resolver server.
DNS recursive resolver server.
DNS authoritative server.

Which DNS zone type do not require the DNS zone files?

The DNS server responsible for Domain 1 -sub domain 1 and 2 – i.e. Zone 2 has no knowledge of who has data for domain3 sub domain1 – i.e. Zone 3 and doesn’t need any.

Which of the following DNS record types allows IPv6 records to be resolved to DNS names?

IPv6 basic connectivity can be enhanced by configuring support for AAAA record types in the DNS name-to-address and address-to-name lookup processes.

What is domain resource record explain DNS resource record types?

A DNS zone database is made up of a collection of resource records. Each resource record specifies information about a particular object. A records are used to resolve a query for the IP address of a specific domain name. …

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What is a DNS MX record quizlet?

Mail exchanger record (MX) The MX resource record specifies a mail exchange server for a DNS domain name. The information is used by Simple Mail Transfer Protocol (SMTP) to route emails to proper hosts.

What does the MX record do in a forward DNS zone quizlet?

What does the MX record do in a forward DNS zone? It identifies the e-mail server to be used for e-mail traffic for the domain.

What OSI layer does IP operate?

The Internet Layer of the TCP/IP model aligns with the Layer 3 (Network) layer of the OSI model. This is where IP addresses and routing live.

What computers are the highest authorities in the DNS hierarchy?

b. Root servers is the answer.

What DNS queries?

A DNS query (also known as a DNS request) is a demand for information sent from a user’s computer (DNS client) to a DNS server. In most cases a DNS request is sent, to ask for the IP address associated with a domain name.

What is DNS AAAA record?

An AAAA Record (quad A Record) is another type of DNS Record that points a domain or subdomain to an IPv6 address, so that when someone types that domain or subdomain in the address bar, the browser knows where to go.

Which of the following are DNS record types?

A Record (address)‍ …
AAAA Record (quad A) …
CNAME Record (Canonical Name) …
ANAME Record. …
SOA Record (Start of Authority)‍ …
NS Record (name server)‍ …
MX Record (Mail eXchange)‍ …
TXT (text) Record‍

What is authoritative name server DNS?

An authoritative server is the authority for its zone. It queries and is queried by other name servers in the DNS. The data it receives in response from other name servers is cached. Authoritative servers are not authoritative for cached data.

What is authoritative and Nonauthoritative DNS server?

An authoritative answer comes from a nameserver that is considered authoritative for the domain which it’s returning a record for (one of the nameservers in the list for the domain you did a lookup on), and a non-authoritative answer comes from anywhere else (a nameserver not in the list for the domain you did a lookup …

Which type of DNS record is most commonly used in a forward lookup zone to resolve a host name to a specific IP address?

Resource records. Returns a 32-bit IPv4 address, most commonly used to map hostnames to an IP address of the host, but it is also used for DNSBLs, storing subnet masks in RFC 1101, etc.

What is a PTR record used for?

A PTR (or Pointer) record is a security tool. Essentially, when you receive an email, your mail server uses the PTR record that comes in with the email message to check that the mail server sending the email matches the IP address that it claims to be using. This is also known as “reverse DNS lookup”.

What are the types of DNS zones?

Primary zone.
Secondary zone.
Active Directory-integrated zone.
Stub zone.
Reverse lookup zone.

What are 4 DNS servers involved in loading a webpage?

DNS recursor. …
Root nameserver. …
TLD nameserver. …
Authoritative nameserver.

Which is a DNS server to which other DNS servers send requests targeted for a specific domain?

Conditional forwarders are DNS servers that only forward queries for specific domain names. Instead of forwarding all queries it cannot resolve locally to a forwarder, a conditional forwarder is configured to forward a query to specific forwarders based on the domain name contained in the query.

What use is a PTR DNS record quizlet?

PTR records are used for the Reverse DNS (Domain Name System) lookup. Using the IP address you can get the associated domain/hostname.

What DNS record is used to resolve a hostname to an IPv4 address?

For resolving IPv4 addresses, DNS uses the A record. The A record can store a 32-bit address and can resolve IPv4 addresses. To resolve IPv6 addresses, DNS uses the AAAA record. The AAAA record can store a 128-bit address and can resolve IPv6 addresses.

What is the primary role of a DNS server?

DNS translates domain names to IP addresses so browsers can load Internet resources. Each device connected to the Internet has a unique IP address which other machines use to find the device. DNS servers eliminate the need for humans to memorize IP addresses such as 192.168.

What does the MX record do in forward DNS zone?

An MX (mail exchange) record is an entry in your DNS. zone file which specifies a mail server to handle a domain’s email. You must configure an MX recordMail Exchanger record is a record in DNS that specifies which server is handles email messages. to receive email to your domain.

What is the most popular DNS server software available?

BIND. BIND is the de facto standard DNS server. It is a free software product and is distributed with most Unix and Linux platforms, where it is most often also referred to as named (name daemon). It is the most widely deployed DNS server.