Cloud Load Balancers: A Comprehensive Guide for Cloud Networking

Question 1

Which of the following is a significant advantage of utilizing a cloud load balancer?

Accepted Answer

Enhanced application performance and responsiveness

Answer

Increased application data protection

Answer

Decreased cloud infrastructure expenses

Answer

Simplified application deployment and management

Question 2

What is the primary purpose of implementing a round-robin load balancing algorithm?

Accepted Answer

Distribute incoming requests equally among available backend servers

Answer

Direct requests to the server with the lightest load

Answer

Send requests to servers based on their response time

Answer

Automatically failover to backup servers in the event of a server failure

Question 3

What is the fundamental distinction between an internal and an external load balancer?

Accepted Answer

Internal load balancers are used within private networks, while external load balancers are used for public networks.

Answer

Internal load balancers can only be managed through the cloud console, while external load balancers can be managed through both the console and APIs.

Answer

Internal load balancers are more expensive than external load balancers.

Answer

Internal load balancers do not provide SSL encryption, while external load balancers do.

Question 4

What is the primary function of a health check in cloud load balancing?

Accepted Answer

Monitor the health and availability of backend servers and redirect traffic away from unhealthy ones

Answer

Ensure that all backend servers receive an equal share of traffic

Answer

Detect and mitigate distributed denial-of-service (DDoS) attacks

Answer

Provide encryption for data transmitted between the load balancer and backend servers

Question 5

What is the key difference between a sticky session and a non-sticky session in load balancing?

Accepted Answer

Sticky sessions maintain user affinity, while non-sticky sessions do not.

Answer

Sticky sessions require additional configuration, while non-sticky sessions do not.

Answer

Sticky sessions are more secure than non-sticky sessions.

Answer

Non-sticky sessions are more efficient than sticky sessions.

Question 6

Which of the following is **not** a type of cloud load balancer?

Accepted Answer

DNS Load Balancer

Answer

Global Load Balancer

Answer

Application Load Balancer

Answer

Network Load Balancer

Question 7

What is the key benefit of using a cloud load balancer?

Accepted Answer

Distributing incoming traffic across multiple servers

Answer

Caching frequently requested data

Answer

Providing security to applications

Question 8

What is a health check used for in a cloud load balancer?

Accepted Answer

To monitor the health of backend servers

Answer

To encrypt data in transit

Answer

To prevent unauthorized access to the load balancer

Answer

To cache frequently requested content

Question 9

What is the primary difference between an internal and an external load balancer?

Accepted Answer

Internal load balancers are not accessible from the internet, while external load balancers are.

Answer

Internal load balancers use layer 3 protocols, while external load balancers use layer 4 protocols.

Answer

Internal load balancers are typically more expensive than external load balancers.

Question 10

What is the purpose of a target group in a cloud load balancer?

Accepted Answer

To specify the set of backend servers that the load balancer will distribute traffic to.

Answer

To store the configuration of the load balancer.

Answer

To perform health checks on the backend servers.

Question 11

What is a key advantage of using a global load balancer?

Accepted Answer

It allows a single load balancer to distribute traffic across multiple regions.

Answer

It provides higher availability than a regional load balancer.

Answer

It is more cost-effective than a regional load balancer.

Question 12

Which load balancing algorithm assigns requests to instances based on their response times, prioritizing those with the lowest latency?

Accepted Answer

Least Latency

Answer

Least Connections

Answer

Weighted Round Robin

Answer

Random

Question 13

What is the primary advantage of using a cloud load balancer?

Accepted Answer

Enhanced application availability and reliability through load distribution and fault tolerance

Answer

Reduced network latency

Answer

Improved data encryption

Question 14

Which type of cloud load balancer is specifically designed to manage internal traffic within a cloud environment?

Accepted Answer

Internal Load Balancer

Answer

Global Load Balancer

Answer

External Load Balancer

Answer

Network Load Balancer

Question 15

What is the primary function of health checks in a cloud load balancer?

Accepted Answer

Regularly monitoring the availability and responsiveness of backend instances to ensure optimal performance

Answer

Distributing load based on user location

Answer

Encrypting traffic between the load balancer and instances

Question 16

Which of the following metrics CANNOT be monitored for a cloud load balancer?

Accepted Answer

Packet loss

Answer

Throughput

Answer

Request count

Answer

Latency

Question 17

What is the distinction between frontend and backend pools in a cloud load balancer?

Accepted Answer

Frontend pools receive incoming traffic and distribute it to backend pools, which contain the actual backend instances

Answer

Frontend pools are always associated with a single backend pool

Answer

Backend pools are used for load balancing across different regions

Question 18

Which of the following is considered a best practice when configuring a cloud load balancer for optimal performance?

Accepted Answer

Configuring multiple frontend ports to handle different types of traffic and improve traffic management

Answer

Enabling auto-scaling based on CPU utilization without considering other resource utilization metrics

Answer

Using a single health check for all backend instances, regardless of their availability status

Question 19

What is the purpose of target groups in a cloud load balancer?

Accepted Answer

Defining a collection of backend instances that receive traffic from the load balancer

Answer

Monitoring the health of backend instances

Answer

Enabling cross-region load balancing

Question 20

**Improved MCQ 2**

Which cloud load balancer type is optimal for distributing traffic across multiple geographical regions?

Accepted Answer

Global load balancer

Answer

Network load balancer

Answer

HTTP/HTTPS load balancer

Answer

Regional load balancer

Question 21

**Improved MCQ 3**

A typical configuration for a network load balancer involves:

Accepted Answer

Layer 4 (TCP/UDP) load balancing

Answer

Layer 7 (HTTP/HTTPS) load balancing

Answer

DNS load balancing

Answer

Round-robin load balancing

Question 22

**Improved MCQ 5**

In a cloud load balancer, what is the primary purpose of a health check?

Accepted Answer

Monitoring the availability and responsiveness of backend instances

Answer

Preventing denial-of-service attacks

Answer

Optimizing performance for specific applications

Question 23

**Improved MCQ 6**

Which of the following represents a best practice for load balancer configuration?

Accepted Answer

Utilizing multiple load balancers in an active-passive setup

Answer

Configuring a single backend instance for high availability

Answer

Disabling health checks to enhance performance

Question 24

**Improved MCQ 8**

What is the role of a target group in the context of a cloud load balancer?

Accepted Answer

Identifying backend instances eligible to receive traffic

Answer

Performing health checks on backend instances

Answer

Encrypting traffic between the load balancer and backend instances

Question 25

**Improved MCQ 9**

Which load balancer type offers Layer 7 (HTTP/HTTPS) routing capabilities?

Accepted Answer

HTTP/HTTPS load balancer

Answer

Global load balancer

Answer

Internal load balancer

Answer

TCP/UDP load balancer

Question 26

**Improved MCQ 10**

To enhance the security of a cloud load balancer, which action should be implemented?

Accepted Answer

Enforcing SSL encryption

Answer

Assigning a private IP address to the load balancer

Answer

Reducing the number of backend instances

Answer

Disabling cross-region traffic

Question 27

Which type of load balancer distributes traffic based solely on the client's IP address?

Accepted Answer

Source IP-based

Answer

Round robin

Answer

Sticky sessions

Answer

Least connections

Question 28

Which load balancer technique ensures that a specific client consistently connects to the same backend server?

Accepted Answer

Sticky sessions

Answer

Round robin

Answer

Least connections

Answer

Source IP-based

Question 29

Where would you typically configure a load balancer in a cloud environment?

Accepted Answer

Within the cloud provider's management console

Answer

On each backend server

Answer

Within the application code

Question 30

Which scenario would NOT benefit from using a cloud load balancer?

Accepted Answer

A single server application with consistently low traffic volume

Answer

A distributed system with multiple microservices

Answer

A web application experiencing frequent traffic spikes

Question 31

What is the main role of a health check in a load balancer configuration?

Accepted Answer

Monitoring the availability of backend servers

Answer

Distributing traffic based on server performance

Answer

Balancing traffic across different data centers

Answer

Enforcing security policies on incoming traffic

Question 32

How does a cloud load balancer typically handle an unresponsive backend server?

Accepted Answer

It removes the server from the load balancer pool and reroutes traffic to healthy servers.

Answer

It automatically restarts the server

Answer

It increases traffic to the remaining servers

Question 33

What is the primary purpose of a load balancer's security group?

Accepted Answer

Controlling access to the load balancer and its backend servers

Answer

Distributing traffic based on client location

Answer

Monitoring server health and performance

Question 34

Which of these is NOT a common type of cloud load balancer?

Accepted Answer

Local load balancer

Answer

External load balancer

Answer

Internal load balancer

Question 35

What is the primary function of a health check within a load balancer?

Accepted Answer

Monitors the availability of servers and removes unhealthy servers from the pool

Answer

Enforces traffic encryption

Answer

Provides authentication and authorization

Question 36

What is the purpose of a target pool in a load balancer configuration?

Accepted Answer

To specify the destination servers for incoming traffic

Answer

To define the load balancing algorithm

Answer

To configure health checks

Question 37

Which of the following is a best practice for configuring a cloud load balancer?

Accepted Answer

Use multiple target pools for different server groups

Answer

Enable all available ports

Answer

Set the health check interval to 1 minute

Question 38

What is the difference between an internal and an external load balancer?

Accepted Answer

Internal load balancers cannot be accessed from outside the VPC, while external load balancers can

Answer

External load balancers are only used for HTTP traffic

Answer

Internal load balancers are more secure than external load balancers

Question 39

Which type of load balancer distributes traffic based on the source IP address of the client?

Accepted Answer

Source IP load balancer

Answer

Network load balancer

Answer

Internal load balancer

Answer

Global load balancer

Question 40

What is the primary benefit of using a load balancer in a cloud environment?

Accepted Answer

Distributing traffic across multiple servers to improve performance and reliability.

Answer

Providing encryption for sensitive data.

Answer

Reducing the cost of maintaining servers.

Question 41

Which layer of the OSI model does a network load balancer operate at?

Accepted Answer

Layer 4 (Transport)

Answer

Layer 2 (Data Link)

Answer

Layer 7 (Application)

Answer

Layer 3 (Network)

Question 42

What is the purpose of a health check in a load balancer configuration?

Accepted Answer

To monitor the health of backend servers and remove unhealthy servers from the pool.

Answer

To ensure that all servers are running the same software version.

Answer

To balance traffic between servers based on their response times.

Question 43

What is the difference between a managed load balancer and an unmanaged load balancer?

Accepted Answer

A managed load balancer is configured and managed by the cloud provider, while an unmanaged load balancer is fully managed by the user.

Answer

A managed load balancer is more expensive than an unmanaged load balancer.

Question 44

What is the purpose of a target group in a load balancer configuration?

Accepted Answer

To define a group of backend servers or instances for the load balancer to distribute traffic to.

Answer

To specify the health check settings for the load balancer.

Question 45

Which load balancer setting allows you to configure the duration for which a server is considered unhealthy after failing a health check?

Accepted Answer

Unhealthy threshold

Answer

Timeout

Answer

Health check interval

Answer

Healthy threshold

Question 46

What load balancer feature gradually shifts traffic to a newly added server, allowing it to warm up before handling full load?

Accepted Answer

Warm-up

Answer

Sticky sessions

Answer

Session affinity

Question 47

Which load balancer type directs traffic based on the destination server's IP address?

Accepted Answer

Network load balancer

Answer

Application load balancer

Answer

Internal load balancer

Answer

Global load balancer

Question 48

Which of these is a key advantage of utilizing a cloud load balancer?

Accepted Answer

Improved application performance

Answer

Reduced operational costs

Answer

Simplified network management

Answer

Enhanced security

Question 49

What is the main purpose of a health check in a load balancer configuration?

Accepted Answer

To continuously monitor the health and responsiveness of target instances

Answer

To prevent traffic from reaching unhealthy instances

Answer

To balance traffic based on different criteria

Question 50

Which of these is NOT a common load balancing algorithm?

Accepted Answer

Round robin with sticky sessions

Answer

Least connections

Answer

Weighted round robin

Answer

Source IP hashing

Question 51

In a global load balancer setup, to which regional endpoint is traffic typically directed?

Accepted Answer

The closest regional endpoint

Answer

The backup endpoint

Answer

The endpoint with the lowest latency

Answer

The primary endpoint

Question 52

What Google Cloud Platform (GCP) command is used to create a load balancer?

Accepted Answer

gcloud compute load-balancers create

Answer

gcloud app load-balancers create

Answer

gcloud network load-balancers create

Answer

gcloud global load-balancers create

Question 53

What is the function of a backend service in a load balancer setup?

Accepted Answer

To define the group of target instances for traffic distribution

Answer

To specify the load balancing algorithm

Answer

To manage health checks for target instances

Question 54

Which of these metrics can be monitored for a load balancer?

Accepted Answer

Latency

Answer

Throughput

Answer

Uptime

Answer

Error rate

Question 55

What is the key benefit of utilizing a target pool in a load balancer configuration?

Accepted Answer

It enables flexible scaling of target instances

Answer

It improves the security of target instances

Answer

It reduces the latency of traffic distribution

Question 56

Which of the following is a recommended practice for configuring load balancers?

Accepted Answer

Using multiple health checks with different intervals

Answer

Disabling session affinity

Answer

Setting the maximum capacity to the lowest possible value