Software-Defined Networking (SDN): A Comprehensive Guide for Network Design

Question 1

Which SDN protocol is primarily responsible for managing and configuring network devices?

Accepted Answer

OpenFlow

Answer

NetConf

Answer

SNMP

Answer

BGP

Question 2

Which component is NOT part of the Software-Defined Networking (SDN) architecture?

Accepted Answer

Physical layer

Answer

Data plane

Answer

Network controller

Answer

Virtualization layer

Question 3

What is the primary function of a network controller in SDN?

Accepted Answer

Centralized management and control of the network

Answer

Data forwarding

Answer

Network virtualization

Answer

Security enforcement

Question 4

Which of the following is NOT a characteristic of SDN?

Accepted Answer

Hardware dependency

Answer

Programmability

Answer

Centralized network control

Answer

Open source software

Question 5

How does Software-Defined Networking (SDN) enhance network automation and what benefits does it provide in simplifying network management?

Accepted Answer

SDN centralizes network control, allowing for automated configuration and management of network infrastructure.

Accepted Answer

SDN eliminates the need for manual network configuration, reducing the risk of human error and inconsistencies.

Answer

SDN is only suitable for large-scale networks, making it impractical for smaller deployments.

Answer

SDN requires specialized hardware and software, making it costly and complex to implement.

Question 6

How does network virtualization boost flexibility in Software-Defined Networking (SDN)?

Accepted Answer

It creates multiple isolated virtual networks on a single physical network, improving flexibility and resource use.

Answer

It simplifies network management by reducing the need for physical devices.

Answer

It enhances security by isolating different network segments.

Question 7

In an SDN architecture, what is the primary function of SDN controllers?

Accepted Answer

To manage network devices and enforce network-wide policies

Answer

To forward data packets between network devices

Answer

To provide a user-friendly graphical interface for network management

Question 8

What is the name of the control component in an SDN architecture?

Accepted Answer

Control plane

Answer

Data plane

Answer

Management plane

Answer

Infrastructure plane

Question 9

Which protocol is primarily used for communication between SDN controllers and network devices?

Accepted Answer

OpenFlow

Answer

HTTP

Answer

Telnet

Answer

SNMP

Question 10

What is the primary function of a hypervisor in an SDN environment?

Accepted Answer

To provide a virtualized network infrastructure

Answer

To manage and orchestrate network devices

Answer

To define and enforce network policies

Answer

To monitor and analyze network performance

Question 11

Which of the following is a fundamental component of Software-Defined Networking (SDN)?

Accepted Answer

Separation of control and data planes

Answer

Dedicated hardware switches

Answer

Physical network infrastructure

Answer

Cloud-native platforms

Question 12

What is the primary function of an SDN controller within an SDN architecture?

Accepted Answer

Centralized management and coordination

Answer

Data plane forwarding

Answer

Firewall policy enforcement

Answer

Switch configuration

Question 13

Which of the following best describes the concept of decoupling in SDN?

Accepted Answer

Separation of the control plane from the data plane

Answer

Isolation of network components

Answer

Emulation of physical network devices in software

Answer

Encryption of traffic for secure transmission

Question 14

Which of the following is an open-source SDN controller?

Accepted Answer

OpenDaylight

Answer

Cisco APIC-EM

Answer

VMware NSX

Answer

Juniper Contrail

Question 15

What are the three main steps in virtualizing a network using SDN?

Accepted Answer

Identify physical network resources, create virtual network abstractions, and map virtual networks to physical resources.

Answer

Configure SDN controllers, implement OpenFlow protocols, and manage virtual networks through a central controller.

Answer

Virtualize network functions, create virtual LANs, and assign IP addresses.

Answer

Install SDN software on network devices, define virtual network requirements, and implement routing protocols.

Question 16

Which of the following is a key characteristic of Software-Defined Networking (SDN)?

Accepted Answer

Open Interfaces

Answer

Proprietary Protocols

Answer

Static Configuration

Answer

Fixed Function Devices

Question 17

What is a primary advantage of SDN's centralized control plane?

Accepted Answer

Enhanced Network Visibility and Control

Answer

Reduced Cost

Answer

Increased Security

Question 18

Which protocol is primarily used by SDN controllers to communicate with network devices?

Accepted Answer

OpenFlow

Answer

SSH

Answer

HTTP

Answer

FTP

Question 19

What is the primary purpose of a hypervisor in SDN?

Accepted Answer

Provides Virtualization for Network Devices

Answer

Manages the Data Plane

Answer

Connects to the SDN Orchestrator

Answer

Controls the SDN Controller

Question 20

Which of the following best describes the concept of network slicing in SDN?

Accepted Answer

Dividing the network into isolated, customized virtual networks

Answer

Increasing the bandwidth of the network

Answer

Reducing the latency of the network

Question 21

What is the fundamental distinction between a traditional network architecture and a Software-Defined Network (SDN)?

Accepted Answer

Separation of Control and Data Planes

Answer

Use of Fiber Optic Cables

Answer

Higher Bandwidth

Answer

Cloud-based Management

Question 22

Which of the following is a key benefit of Software-Defined Networking (SDN)?

Accepted Answer

Increased network flexibility

Answer

Reduced hardware costs

Answer

Enhanced security

Answer

Improved performance

Question 23

What is the primary function of a SDN controller?

Accepted Answer

Centralized configuration and management of network devices

Answer

Routing and switching

Answer

Data plane forwarding

Question 24

Which of the following protocols is used for communication between the SDN controller and network devices?

Accepted Answer

OpenFlow

Answer

IPsec

Answer

BGP

Question 25

What is the concept of network virtualization enabled by SDN?

Accepted Answer

Creating multiple isolated logical networks over a shared physical infrastructure

Answer

Increasing bandwidth capacity

Answer

Reducing latency

Question 26

Which of the following is a potential challenge associated with SDN?

Accepted Answer

Vendor lock-in

Answer

Security vulnerabilities

Answer

Costly implementation

Answer

Increased complexity

Question 27

What is the role of the data plane in SDN?

Accepted Answer

Forwarding traffic based on instructions received from the SDN controller

Answer

Managing network configurations

Answer

Providing a centralized view of the network

Question 28

Which of the following applications is well-suited for SDN?

Accepted Answer

Cloud computing

Answer

Residential broadband access

Answer

Legacy enterprise networks

Answer

Industrial control systems

Question 29

What is the main purpose of a SDN southbound interface?

Accepted Answer

To communicate with underlying network devices

Answer

To provide a graphical user interface for network management

Answer

To connect to external cloud platforms

Answer

To handle user authentication and authorization

Question 30

Which of the following is NOT a layer in the SDN architecture?

Accepted Answer

Application layer

Answer

Infrastructure layer

Answer

Control plane

Answer

Data plane

Question 31

What is the primary goal of using SDN in network design?

Accepted Answer

To increase network agility and flexibility

Answer

To enhance security

Answer

To improve network performance

Answer

To reduce hardware costs