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What is the role of a Name Server (NS) record in DNS?
a. It redirects HTTP traffic
b. It specifies the authoritative name servers for a domain
c. It provides mail server details for a domain
d. It stores only IP address records
Answer: beitca+2
Which DNS record type tells the internet where to find DNS information for a domain?
a. A record
b. MX record
c. NS record
d. TXT record
Answer: cpowerdmarc+1
How many NS records are commonly recommended for a domain for redundancy?
a. One
b. Two or more
c. None
d. Unlimited
Answer: btechterms+1
What is the main function of a name server in networking?
a. Encrypting data
b. Translating domain names into IP addresses
c. Storing website content
d. Sending emails
Answer: bwikipedia+2
Which hierarchical level do NS records help manage in DNS?
a. Only root
b. Specific zones or domains
c. All global traffic
d. User credentials
Answer: beitca+1
Which protocol is used by DNS for most query operations?
a. TCP
b. UDP
c. HTTP
d. FTP
Answer: btestbook+1
What happens if NS records are misconfigured?
a. Domain remains unaffected
b. Domain may become unreachable
c. Email services work faster
d. DNS queries are ignored
Answer: bcloudns+1
What do authoritative name servers do?
a. Resolve client-side DNS cache
b. Store and maintain DNS records for domains
c. Generate SSL certificates automatically
d. Configure local firewall rules
Answer: btechterms+1
What is the Time to Live (TTL) value in an NS record used for?
a. Security settings
b. Cache duration for the record
c. Setting default homepage
d. Assigning priority to mail servers
Answer: bpowerdmarc+1
Which component is at the top of the DNS hierarchy?
a. Subdomain server
b. Root server
c. Zone server
d. Authoritative name server
Answer: bgeeksforgeeks+2
Why are there usually multiple NS records configured for a single domain?
a. To improve speed
b. For redundancy and availability
c. To store more data
d. To handle emails
Answer: bpowerdmarc+1
Which of the following is a naming convention for name servers?
a. mail.example.com
b. ns1.example.com
c. www.example.com
d. img.example.com
Answer: btechterms+1
What is the effect of having no valid NS records for a domain?
a. Faster website loading
b. Domain is not resolvable
c. More spam emails
d. Higher search ranking
Answer: bcloudns+1
NS records point to:
a. IP addresses directly
b. Hostnames of name servers
c. Usernames of administrators
d. Encryption keys
Answer: bcloudns+2
Which record must always exist for a domain to be managed by DNS?
a. NS record
b. TXT record
c. MX record
d. PTR record
Answer: aeitca+2
NS records do not contain:
a. Name of authoritative name servers
b. Actual IP addresses of websites
c. Information for DNS delegation
d. Hostnames for DNS servers
Answer: beitca+1
What is a zone in DNS terminology?
a. A physical server
b. A domain or portion managed by specific NS records
c. An email distribution list
d. A security certificate
Answer: bpowerdmarc+2
Which command-line tool can verify NS records for a domain?
a. tracert
b. nslookup
c. ping
d. arp
Answer: blearn.microsoft+1
Where are NS records usually configured?
a. On web servers
b. Through DNS hosting providers or registrars
c. In browser settings
d. Within application software
Answer: blearn.microsoft+2
What is delegation in DNS?
a. Assigning emails to users
b. Assigning authority for domain management to specific name servers
c. Encrypting DNS records
d. Redirecting web content
Answer: beitca+1
Why is having at least two authoritative name servers recommended?
a. To balance load and ensure uptime if one server fails
b. To increase website ranking
c. To support multiple email domains
d. To block malware
Answer: atechterms+1
What does an NS record NOT do?
a. Indicate authoritative DNS servers
b. Direct where DNS queries go
c. Store all zone data itself
d. Enable DNS redundancy
Answer: ccloudns+2
The record type “NS” stands for:
a. Network Service
b. Name Server
c. Numeric Service
d. Node Security
Answer: bwikipedia+2
How is DNS resolution process initiated?
a. By querying root servers, then referred down via NS records
b. By directly accessing all TLD servers
c. By using only local cache
d. By running website code
Answer: ageeksforgeeks+2
Which is a correct example of an NS record entry?
a. example.com IN A 192.168.1.2
b. example.com IN MX mail.example.com
c. example.com IN NS ns1.nameserver.com
d. example.com IN TXT “v=spf1”
Answer: cpowerdmarc+1
Which layer of the OSI model does DNS primarily function at?
a. Physical
b. Application
c. Network
d. Presentation
Answer: blearn.microsoft+1
What type of DNS server holds a complete copy of the zone file?
a. Secondary
b. Caching
c. Forwarding
d. Root hints only
Answer: aexamradar+1
NS records are most closely associated with which DNS concept?
a. Forward lookup
b. Delegation of authority
c. Firewall configuration
d. SMTP relay
Answer: bcloudns+1
Which address format do NS records use to point to name servers?
a. Numeric IP Only
b. FQDN (Fully Qualified Domain Name)
c. Both IP and FQDN
d. MAC Address
Answer: bpowerdmarc+1
If both nameservers listed in NS records are down, what is the effect?
a. Faster resolution
b. The domain becomes unreachable
c. Emails are delivered to backup MX
d. A records are automatically cached
Answer: bcloudns+1
Where can changes to NS records be made for a domain?
a. DNS resolver cache
b. Domain registrar or DNS provider’s control panel
c. End-user browser
d. Root server only
Answer: bpowerdmarc+1
What security concern exists if NS records are pointed to untrusted servers?
a. Potential DNS hijacking or poisoning
b. Extra redundancy
c. Automatic IPv6 support
d. None
Answer: alearn.microsoft+1
An authoritative name server is responsible for:
a. Caching data only
b. Managing and serving data for its assigned domain/zone
c. Sending spam filters
d. Blocking malware automatically
Answer: btechterms+2
What command can display NS records for a domain?
a. ipconfig /displaydns
b. nslookup -type=NS example.com
c. route print
d. net use
Answer: blearn.microsoft+1
A domain without valid NS records will result in:
a. Default address resolution
b. DNS resolution failures
c. Spam filtering
d. Faster propagation
Answer: bcloudns+1
How do NS records enable failover in DNS?
a. By listing multiple name servers for redundancy
b. By supporting HTTP redirects
c. By splitting DNS zones
d. By encrypting all DNS data
Answer: alearn.microsoft+2
A suitable reason to update NS records is:
a. Changing DNS hosting provider
b. Modifying website content
c. Updating SSL certificate
d. Deleting emails
Answer: apowerdmarc+1
What does the FQDN used in NS records stand for?
a. First Qualified Domain Name
b. Fully Qualified Domain Name
c. Fast Query DNS Name
d. Final Quality Domain Node
Answer: bcloudns+1
How do NS records help with DNS zone delegation?
a. By specifying name servers for subordinate zones
b. By storing zone data directly
c. By blocking malicious domains
d. By enabling HTTP redirects
Answer: ageeksforgeeks+2
NS records are vital for:
a. Email routing only
b. Accurate DNS resolution and delegation
c. SSL certificate generation
d. Network cabling
Answer: bgeeksforgeeks+2
Which statement is correct regarding NS records and subdomains?
a. Subdomains can have separate NS records for delegation
b. NS records only apply to root domains
c. NS records replace A records
d. Subdomains ignore NS records
Answer: aeitca+1
When updating NS records, how long might it take to propagate?
a. Instantly
b. Up to the TTL period (minutes to 48 hours)
c. One week minimum
d. It never propagates
Answer: bpowerdmarc+1
Which feature can improve DNS query response using NS records?
a. Caching frequently used NS lookups
b. Encrypting all DNS answers
c. Limiting NS records to one
d. Using only email records
Answer: alearn.microsoft+1
Can multiple domains share the same set of NS records?
a. Yes, if they are managed by the same provider
b. No, each must be unique
c. Only if using Microsoft DNS
d. Never
Answer: acloudns+1
Which record is commonly associated with NS records for zone administration?
a. SOA (Start of Authority) record
b. A record
c. TXT record
d. SPF record
Answer: aexamtopics+1
Name servers specified in NS records are responsible for:
a. Managing DNS records for the domain
b. Hosting website content
c. Providing SSL certificates
d. Performing server backups
Answer: atechterms+2
Which DNS server type provides referrals using NS records?
a. Recursive resolver
b. Authoritative server
c. Forwarding server
d. Root and TLD servers
Answer: dgeeksforgeeks+2
What effect does an incorrect NS record have on a subdomain?
a. No effect
b. Subdomain becomes unreachable via DNS
c. Emails get blocked
d. All DNS queries are encrypted
Answer: bpowerdmarc+1
NS records contribute to DNS reliability by:
a. Offering alternate servers in case of failure
b. Filtering spam automatically
c. Encrypting website connections
d. Providing global load balancing
Answer: acloudns+1
Which is true about NS records in a private/internal DNS setup?
a. Used for internal domain lookups within local networks
b. Unnecessary for internal domains
c. Only used for internet-facing servers
d. Required for IP routing only
Answer: aeitca+2

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