Cloud DNS and Load Balancer Types Quiz

1. What is a sticky session in load balancing?

Session that never times out

Route client requests to same server throughout session

Session encrypted with SSL/TLS

Session that spans multiple load balancers

2. DNS CNAME records can point directly to an IP address.

True

False

3. Layer 4 load balancers can make routing decisions based on application-specific data in HTTP headers.

True

False

4. A recursive DNS query is one where the resolver queries multiple nameservers on behalf of the client.

True

False

Submit

8. What does the SOA DNS record contain?

Primary nameserver and zone administrator contact

IPv6 address mapping

Mail server information

Alias domain names

9. Health checks in load balancers serve which purpose?

Verify servers are responsive and healthy

Encrypt traffic between servers

Monitor DNS performance

Authenticate user credentials

10. Which DNS query type requests all records for a domain?

A query

MX query

AXFR query

SOA query

11. Which DNS record type maps a domain name to an IPv6 address?

A record

AAAA record

CNAME record

MX record

12. DNS zone transfer is associated with which record type?

AXFR

NS record

SOA record

All of the above

13. Which load balancing method uses a hash of the client's IP address to determine server assignment?

Round-robin

Random

IP hash

Least response time

14. What is DNS TTL?

Time To Live—how long DNS records are cached

Total Transfer Load

Transmission Type Link

Threshold Traffic Limit

15. A Layer 7 load balancer makes routing decisions based on what information?

Source IP address only

Port numbers only

Application-level data like HTTP headers

MAC addresses

16. Which DNS record type is used for email routing?

A record

TXT record

MX record

SRV record

17. Layer 4 load balancers operate at which OSI layer?

Application layer

Transport layer

Network layer

Data link layer

18. What does DNS CNAME record do?

Maps domain to IPv4 address

Creates alias for another domain name

Specifies mail server for domain

Defines nameserver for domain

19. Which load balancing algorithm assigns requests to the server with the fewest active connections?

Round-robin

Least connections

IP hash

Weighted round-robin

20. What is the primary function of a load balancer in cloud infrastructure?

Distribute incoming traffic across multiple servers

Encrypt all network communications

Store backup copies of data

Monitor DNS resolution speed

Cloud+ V3 Cloud DNS and Load Balancer Types Quiz

1. What is a sticky session in load balancing?

2.

What first name or nickname would you like us to use?

2. DNS CNAME records can point directly to an IP address.

3. Layer 4 load balancers can make routing decisions based on application-specific data in HTTP headers.

4. A recursive DNS query is one where the resolver queries multiple nameservers on behalf of the client.

5. Round-robin load balancing distributes requests equally across servers in ______ fashion.

6. DNS ______ records point to the authoritative nameservers for a domain.

7. A cloud provider uses ______ load balancers to route traffic based on URL paths and hostnames.

8. What does the SOA DNS record contain?

9. Health checks in load balancers serve which purpose?

10. Which DNS query type requests all records for a domain?

11. Which DNS record type maps a domain name to an IPv6 address?

12. DNS zone transfer is associated with which record type?

13. Which load balancing method uses a hash of the client's IP address to determine server assignment?

14. What is DNS TTL?

15. A Layer 7 load balancer makes routing decisions based on what information?

16. Which DNS record type is used for email routing?

17. Layer 4 load balancers operate at which OSI layer?

18. What does DNS CNAME record do?

19. Which load balancing algorithm assigns requests to the server with the fewest active connections?

20. What is the primary function of a load balancer in cloud infrastructure?