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Zorluk: OrtaIP Addressing Services

An network engineer is deploying an enterprise application that requires client workstations to discover both the hostname and the specific port number of server instances providing an internal service on the network. Which DNS resource record type should be configured on the authoritative DNS server to supply this host and port location information?

  1. SRV recordCevap
  2. B
    CNAME record
  3. C
    PTR record
  4. D
    MX record

Cevap

The SRV (Service Location) record is the required DNS resource record type to define both hostnames and port numbers for network services.
The SRV (Service Location) record allows DNS clients to locate servers providing specific services (such as SIP or Kerberos) by specifying the service name, protocol, priority, weight, port number, and target hostname in the record payload.

Adım Adım Çözüm

1
Analyze the application requirements
The application requires clients to resolve both the target server hostname and the exact port number for a network service.
Standard host records (like A or AAAA) only map names to IP addresses, not port numbers.
2
Evaluate DNS record capabilities
The SRV record structure includes fields for Service, Protocol, Name, TTL, Class, Priority, Weight, Port, and Target hostname.
SRV is the only standard DNS record designed specifically to publish service location and port metadata.

Anahtar Kavram

DNS Service Location (SRV) Records
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Konular

IP Addressing Services

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