PHP Networking MCQ question and answer with solution | PHP Programming

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1.
What is the full form of DNS?

A. Digital Network System

B. Domain Network System

C. Digital Name Systmem

D. Domain Name System

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2.
Which one of the following function checks for the existence of DNS records?

A. checkdns()

B. checkdnsr()

C. checkdnsrr()

D. checkdnsa()

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3.
Which one of the following function is used to return an array consisting of various DNS resource records pertinent to a specific domain?

A. dns_get_record()

B. dns_record()

C. dnsrr_get_record()

D. dnsrr_record()

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4.
Which one of the following function is used to retrieve the MX records for the domain specified by hostname?

A. getmx()

B. retrieve_mx()

C. getmxrr()

D. retrieve_mxrr()

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5.
What is the default port number of HTTP’s?

A. 70

B. 80

C. 90

D. 100

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