Software Defined Networking Basics Quiz & Flashcards

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Questions and Answers

What is the primary advantage of a software-defined network in terms of network control?

Slower network speeds due to software overhead

Increased security threats through centralized control

Reduced flexibility in choosing networking equipment

Reduced manual programming of hardware devices (correct)

What is a key security difference between SDN and traditional networking?

SDN provides better security through centralized control (correct)

SDN is more prone to security breaches due to software vulnerabilities

SDN has lesser visibility into network security threats

Traditional networking has more secure hardware devices

What is a major benefit of SDN in terms of network infrastructure?

Network infrastructure that requires multiple hardware devices

Network infrastructure that is only compatible with specific protocols

Rigid network infrastructure that cannot be changed

Customizable network infrastructure that can be changed in real-time (correct)

Why is SDN particularly important in the context of smart devices?

SDN offers clear advantages over traditional networking for smart devices Signup and view all the answers

What is a key advantage of SDN in terms of network traffic flow?

Network administrators can prioritize applications that require more availability Signup and view all the answers

What is a key benefit of SDN in terms of security threats?

SDN provides visibility into the entire network, providing a more holistic view of security threats Signup and view all the answers

What is a key difference between SDN and traditional networking in terms of hardware devices?

SDN allows developers to control the flow of traffic over a network simply by programming an open standard software-based controller Signup and view all the answers

What is a key advantage of SDN in terms of network flexibility?

SDN allows administrators to choose a single protocol to communicate with any number of hardware devices through a central controller Signup and view all the answers

What is the primary function of OpenFlow in SDN?

To control the data plane of virtual and physical switches Signup and view all the answers

What is a key element that facilitates SDN adoption?

The growing use of network functions virtualization Signup and view all the answers

What is the primary difference between SDN and NFV?

SDN is used in data centers, while NFV is used in WANs Signup and view all the answers

What is the relationship between SDN and NFV?

SDN and NFV are complementary Signup and view all the answers

What is the typical location of a data center?

Within a single building Signup and view all the answers

What is the primary benefit of using SDN in data centers?

Improved network efficiency and reduced costs Signup and view all the answers

What is the role of an SDN controller?

To control the forwarding plane of a network switch Signup and view all the answers

What is the purpose of APIs in SDN?

To control how data moves through the network on each device Signup and view all the answers

What is a key feature of Junos Space Network Management Platform?

Exhaustive network analytics Signup and view all the answers

What is Masergy known for?

Cloud-native company Signup and view all the answers

What is a benefit of Masergy's SDN portal?

Powerful data analytics Signup and view all the answers

What is a key feature of Nuage Networks Virtualized Services Platform (VSP)?

Software-defined technology solutions Signup and view all the answers

What is a unique aspect of Juniper's offerings?

Exhaustive network analytics Signup and view all the answers

What is a benefit of Masergy's managed services?

Robust SLAs and 24/7 network monitoring Signup and view all the answers

What is a key feature of Nuage Networks' technology solutions?

Network virtualization and end-to-end network automation Signup and view all the answers

What is a key feature of Juniper's programmable SDK?

Automate network processes Signup and view all the answers

What is a key benefit of SD-WAN in terms of network connections?

Unify the various connections Signup and view all the answers

What is an additional layer of security provided by SD-WAN?

End-to-end encryption across the network Signup and view all the answers

What is the primary purpose of the SDN controller in terms of application traffic?

To automatically ensure application traffic is routed according to policies Signup and view all the answers

What type of APIs are used for northbound API communication?

RESTful APIs Signup and view all the answers

What is the primary function of southbound APIs in SDN?

To tell the network infrastructure what path the application data must take Signup and view all the answers

What is the result of SD-WAN's ability to unify various connections?

Enhanced scalability and flexibility Signup and view all the answers

What is the primary benefit of SD-branch deployment?

Enhanced flexibility and scalability for on-premises networks Signup and view all the answers

What is the role of the SDN controller in terms of network resource allocation?

To automatically allocate network resources based on application needs Signup and view all the answers

What is a key benefit of SDN in terms of network performance?

Viewing network performance data and deriving analytics insights Signup and view all the answers

What is the primary purpose of programmability in an SDN solution?

To automate network processes based on specific performance parameters Signup and view all the answers

What should an SDN solution provider offer to support an organization's network transformation journey?

End-to-end support, including consultancy and advisory services, telephonic and on-site help, and training sessions Signup and view all the answers

What is the primary function of prebuilt connectors in an SDN solution?

To integrate with applications, network switches, and traffic gateways Signup and view all the answers

What is the benefit of an SDN solution that can detect network bottlenecks before they become a problem?

Proactive identification and resolution of network issues Signup and view all the answers

What is the primary purpose of an SDN solution's command-line interface (CLI) or graphical user interface (GUI)?

To write automation code Signup and view all the answers

What is an ideal characteristic of an SDN solution provider's support?

Having an office or a partner with an office in the region where the subscriber organization operates Signup and view all the answers

What is the primary benefit of an SDN solution that can provide real-time dashboards and on-demand network reports?

Better visibility into network performance and resource utilization Signup and view all the answers

Study Notes

Software-Defined Networking (SDN)

SDN is a centralized network management approach that allows administrators to control and manage network resources and configure network services in real-time
It provides increased control, flexibility, and security compared to traditional networking
With SDN, network administrators can control the flow of traffic, prioritize applications, and allocate virtual resources through a centralized controller

Key Benefits of SDN

Enhanced security through increased visibility and the ability to define secure pathways
Customizable network infrastructure, allowing administrators to optimize the flow of data and prioritize applications
Increased flexibility in choosing networking equipment, with the ability to communicate with multiple devices through a central controller

SDN Layers and Components

SDN includes layer 3 switches, firewalls, and virtual switches
Open, or switch-based, SDN uses OpenFlow protocol to communicate with network switches
SDN by APIs uses application programming interfaces to control how data moves through the network

Types of SDN

Open, or switch-based, SDN
SDN by APIs
Network Function Virtualization (NFV) is a concept closely related to SDN, decoupling network operations from hardware and delivering them as software-only products or services

Relationship with SD-WAN and NFV

SD-WAN provides end-to-end encryption across the network, increasing security
SD-branch is applicable to local area networks (LANs) for creating a single office or location deployment
NFV provides many of the actual services managed in a software-defined network

SDN Architecture

Northbound APIs allow applications to communicate with the controller to request resources and prioritize traffic
Southbound APIs allow the controller to communicate with network infrastructure, such as routers and switches
The controller orchestrates how applications are given resources available in the network

Main Features of SDN Solutions

Data and analytics provide real-time insights into network performance and resource utilization
Programmability allows for automation of workflows based on specific performance parameters
Support from the SDN solution provider is essential for network transformation and ongoing maintenance

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Description

Learn about the fundamental principles of Software Defined Networking (SDN) and its differences from traditional networking. Explore the security differences and how SDN provides better security.

Software Defined Networking (SDN) Fundamentals