MCQs

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1. What is the primary purpose of a DNS A record in cloud computing?
   a. To map a domain name to an IPv4 address
   b. To verify domain ownership
   c. To direct emails
   d. To alias one domain to another
   Answer: a. To map a domain name to an IPv4 addressgeeksforgeeks+3
2. Which DNS record allows the mapping of a domain name to an IPv6 address?
   a. A record
   b. MX record
   c. AAAA record
   d. PTR record
   Answer: c. AAAA recordcloudns+3
3. What does the MX record specify?
   a. Main web server
   b. Mail server responsible for emails
   c. Caching server
   d. Cloud load balancer
   Answer: b. Mail server responsible for emailsbluecatnetworks+4
4. The CNAME record in DNS is used to:
   a. Map domain to IP
   b. Redirect domain to another domain
   c. Assign mail server address
   d. Store text information
   Answer: b. Redirect domain to another domaindnsimple+3
5. Which record type is essential for reverse DNS lookups?
   a. PTR
   b. SOA
   c. TXT
   d. NS
   Answer: a. PTRibm+2
6. What is the function of an NS record?
   a. Points to authoritative DNS servers
   b. Maps domain to IPv6
   c. Redirects domains
   d. Sets refresh intervals
   Answer: a. Points to authoritative DNS serversbluecatnetworks+2
7. Which DNS record establishes zone authority and parameters?
   a. MX
   b. SOA
   c. TXT
   d. SRV
   Answer: b. SOAcloudns+2
8. What does a TXT record typically store?
   a. IP addresses
   b. Server information
   c. Text-based info for domain verification
   d. Redirect rules
   Answer: c. Text-based info for domain verificationgeeksforgeeks+2
9. In cloud DNS, what is the role of DNSSEC?
   a. Increase query speed
   b. Protect against spoofing and cache poisoning
   c. Reduce TTL values
   d. Proxy DNS records
   Answer: b. Protect against spoofing and cache poisoningcloud.google
10. DNS SRV records are mostly used for:
    a. Service location specifications
    b. Email routing
    c. IPv4 mapping
    d. Logging
    Answer: a. Service location specificationsdnsimple+1
11. What is a common use of CAA records?
    a. Indicate authorized certificate authorities
    b. Store MX server info
    c. Map domain to IPv6
    d. Set primary nameserver
    Answer: a. Indicate authorized certificate authoritiesibm
12. Which record would allow an alias for www.example.com to point to example.com?
    a. TXT
    b. CNAME
    c. MX
    d. A record
    Answer: b. CNAMEgeeksforgeeks+3
13. What DNS record is essential for email delivery in a cloud-based domain?
    a. NS
    b. MX
    c. AAAA
    d. PTR
    Answer: b. MXcloudns+2
14. DNS records that define refresh and retry rates are found in the:
    a. SOA record
    b. MX record
    c. PTR record
    d. CAA record
    Answer: a. SOA recorddnsimple+2
15. Which DNS record type converts IP addresses to domain names for reverse DNS?
    a. PTR
    b. A
    c. CNAME
    d. SRV
    Answer: a. PTRbluecatnetworks+2
16. In a cloud infrastructure, what record helps route services by protocol?
    a. SRV
    b. TXT
    c. MX
    d. A
    Answer: a. SRVibm+1
17. What information about authoritative servers is provided by NS records?
    a. IP addresses only
    b. Emails only
    c. Domain names of servers
    d. Hostnames of mail servers
    Answer: c. Domain names of serversbluecatnetworks+2
18. A record type that holds SPF email security information is:
    a. TXT
    b. A
    c. CNAME
    d. PTR
    Answer: a. TXTgeeksforgeeks+2
19. Which DNS record identifies the primary server for the domain?
    a. SOA
    b. MX
    c. NS
    d. SRV
    Answer: a. SOAcloudns+2
20. AAAA records provide mapping for:
    a. IPv6 addresses
    b. IPv4 addresses
    c. Email servers
    d. Secondary nameservers
    Answer: a. IPv6 addressesdnsimple+2
21. What is the TTL field in DNS records used for?
    a. Controls how long data is cached by resolvers
    b. Specifies mail server priority
    c. For redirecting domains
    d. Stores server certificates
    Answer: a. Controls how long data is cached by resolversdevelopers.cloudflare
22. Which record is typically required for cloud-based load balancer integration?
    a. CNAME
    b. MX
    c. PTR
    d. TXT
    Answer: a. CNAMEibm+2
23. What DNS record can verify domain ownership for cloud email services?
    a. TXT
    b. MX
    c. SRV
    d. NS
    Answer: a. TXTgeeksforgeeks+2
24. Which record is fundamental for a newly registered cloud domain?
    a. SOA
    b. MX
    c. A
    d. CNAME
    Answer: a. SOAcloudns+2
25. Which record allows multiple services within a domain to operate over different ports?
    a. SRV
    b. MX
    c. AAAA
    d. NS
    Answer: a. SRVdnsimple+1
26. What DNS record stores public keys for domain security?
    a. DNSKEY
    b. MX
    c. CNAME
    d. AAAA
    Answer: a. DNSKEYibm
27. DNAME records are used for:
    a. Redirecting all subdomains of a domain to another domain
    b. Mapping email servers
    c. Storing SPF data
    d. Defining TXT entries
    Answer: a. Redirecting all subdomains of a domain to another domainibm
28. Which DNS record is essential for private DNS zones in cloud networks?
    a. NS
    b. PTR
    c. MX
    d. A
    Answer: a. NScloud.google+3
29. Certificate-related DNS records are commonly called:
    a. CERT records
    b. MX records
    c. SOA records
    d. TXT records
    Answer: a. CERT recordsibm
30. What kind of record can provide IP mapping for global DNS anycast?
    a. A record
    b. TXT record
    c. MX record
    d. PTR record
    Answer: a. A recordgeeksforgeeks+2
31. In Google Cloud DNS, zone management is controlled via:
    a. Managed zones and record sets
    b. TXT entries only
    c. Mail exchange records
    d. Refresh intervals
    Answer: a. Managed zones and record setscloud.google
32. Which record would be used to support VoIP service location routing?
    a. SRV
    b. A
    c. AAAA
    d. NS
    Answer: a. SRVdnsimple+1
33. Which record is crucial to start the zone of authority?
    a. SOA
    b. PTR
    c. MX
    d. TXT
    Answer: a. SOAcloudns+2
34. How does a CNAME record differ from an A record?
    a. Points to domain names, not IP addresses
    b. Directs mail server priority
    c. Specifies default TTL
    d. Sets zone authority
    Answer: a. Points to domain names, not IP addressesbluecatnetworks+3
35. Which record provides details for DNS resolver servers?
    a. NS
    b. MX
    c. A
    d. TXT
    Answer: a. NSbluecatnetworks+2
36. DNS AAAA records support addresses up to:
    a. 128 bits
    b. 32 bits
    c. 64 bits
    d. 16 bits
    Answer: a. 128 bitsibm
37. What record is vital for cloud-based anti-phishing protections?
    a. TXT (SPF/DKIM)
    b. NS
    c. PTR
    d. SOA
    Answer: a. TXT (SPF/DKIM)geeksforgeeks+2
38. How many SOA records per DNS zone are permitted?
    a. One
    b. Unlimited
    c. None
    d. Two
    Answer: a. Onecloudns+2
39. Forward DNS mapping uses:
    a. A/AAAA records
    b. PTR records
    c. MX records
    d. TXT records
    Answer: a. A/AAAA recordsdnsimple+2
40. Reverse DNS mapping utilizes:
    a. PTR records
    b. A records
    c. MX records
    d. TXT records
    Answer: a. PTR recordsbluecatnetworks+2
41. DNS zone transfers between servers use which protocol?
    a. TCP
    b. UDP
    c. HTTP
    d. ICMP
    Answer: a. TCPtestbook
42. Which DNS record can restrict certificate issuance to specified authorities?
    a. CAA
    b. PTR
    c. A
    d. MX
    Answer: a. CAAibm
43. For cloud DNS, private zones primarily use which record type?
    a. NS
    b. MX
    c. TXT
    d. PTR
    Answer: a. NScloud.google+3
44. Which record assists in resource record accountability and logging?
    a. SOA
    b. MX
    c. TXT
    d. AAAA
    Answer: a. SOAcloudns+2
45. What record type enables web service discovery by protocol and port in cloud environments?
    a. SRV
    b. CNAME
    c. MX
    d. A
    Answer: a. SRVdnsimple+1
46. SPF information for domains is stored in:
    a. TXT records
    b. NS records
    c. MX records
    d. SOA records
    Answer: a. TXT recordsgeeksforgeeks+2
47. Which record allows for domain ownership verification for Google services?
    a. TXT
    b. CNAME
    c. NS
    d. MX
    Answer: a. TXTcloud.google+1
48. The authoritative DNS server for a cloud domain is defined by the:
    a. NS record
    b. MX record
    c. PTR record
    d. A record
    Answer: a. NS recordbluecatnetworks+2
49. DNS records are managed in Google Cloud using:
    a. Managed zones and record sets
    b. Individual TXT entries
    c. Mail server priority lists
    d. Reverse lookups only
    Answer: a. Managed zones and record setscloud.google
50. Which DNS record type is used to create an alias for a subdomain?
    a. CNAME
    b. MX
    c. TXT
    d. A
    Answer: a. CNAMEgeeksforgeeks+3

1. https://www.geeksforgeeks.org/computer-networks/domain-name-system-dns-in-application-layer/
2. https://www.cloudns.net/blog/dns-records-different-types/
3. https://support.dnsimple.com/articles/common-dns-records/
4. https://www.ibm.com/think/topics/dns-records
5. https://bluecatnetworks.com/blog/know-the-eight-most-common-dns-records/
6. https://cloud.google.com/dns
7. https://developers.cloudflare.com/dns/manage-dns-records/
8. https://cloud.google.com/dns/docs/set-up-dns-records-domain-name
9. https://testbook.com/objective-questions/mcq-on-dns–5eea6a0939140f30f369d8ff
10. https://www.sanfoundry.com/computer-networks-questions-answers-dns/
11. https://www.scribd.com/document/437919348/CH-25-Domain-Name-System-multiple-choice-questions-and-answers-pdf-converted-docx
12. https://www.vinsys.com/blog/aws-cloud-practitioner-certification-exam-mcqs
13. https://www.scribd.com/document/608311838/Week-6-Graded-Quiz-Answers
14. https://www.sanfoundry.com/1000-cloud-computing-questions-answers/
15. https://www.studocu.com/in/document/anna-university/cloud-computing-cs8791/cloud-computing-mcq-mcq/13933351
16. https://www.adaface.com/assessment-test/cloud-computing-online-test
17. https://docs.acquia.com/acquia-cloud-platform/configuring-dns-records-your-application
18. https://www.utu.ac.in/DiwalibaPolytechnic/download/Objective%20Type%20Questions/CE-IT/Cloud%20Infrastructure.pdf
19. https://developers.cloudflare.com/dns/manage-dns-records/reference/dns-record-types/
20. https://www.cloudns.net