3.4 Describe the Purpose of Software-Defined Wide Area Networking (SD-WAN) Solutions CYBERSECURITY-PRACTITIONER Practice Questions (Page 2)

Questions 6–10

1. 6expert · hard

   A company is considering SD-WAN to reduce costs. Currently, the company uses MPLS for all branch connectivity. The company has 20 branches, each with a 100 Mbps MPLS circuit. The company is considering replacing MPLS with broadband internet connections. What is the most important cost-related consideration that the company should evaluate?

   • ABroadband circuits are always cheaper than MPLS, so the company will definitely save money by switching.
   • BThe company should keep MPLS because broadband is not reliable enough for business-critical applications.
   • CThe company should only consider the monthly circuit cost when comparing MPLS and broadband.
   • DThe cost of broadband circuits is typically lower than MPLS, but the company must also consider the cost of SD-WAN hardware, software licenses, and potential downtime during migration.
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2. 7foundation · easy

   How does SD-WAN improve application performance?

   • ABy dynamically steering traffic to the best-performing path
   • BBy compressing all data to reduce bandwidth usage
   • CBy always sending traffic over the most expensive link
   • DBy using a single dedicated link for all traffic to ensure consistency
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4. 8foundation · easy

   How does SD-WAN support cloud adoption?

   • ABy providing direct, optimized connectivity to cloud applications
   • BBy replacing the cloud provider's network
   • CBy requiring all cloud traffic to be backhauled to the data center
   • DBy limiting cloud access to only certain users
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5. 9expert · hard

   A company is comparing its traditional WAN with a proposed SD-WAN solution. The traditional WAN uses MPLS with BGP for routing, and all traffic is backhauled to a central data center for security inspection. The SD-WAN proposal includes direct internet breakout at branches and local security inspection. The company is concerned about security. What is the most accurate comparison of security between the two approaches?

   • ASD-WAN is less secure because direct internet breakout exposes branch traffic to the public internet without inspection.
   • BTraditional WAN is inherently more secure because all traffic passes through a central security appliance.
   • CBoth approaches provide the same level of security, so the decision should be based solely on cost.
   • DSD-WAN can be more secure because it allows for granular, application-aware security policies at each branch, while traditional WAN forces all traffic through a central choke point.
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6. 10application · medium

   A company's network engineer is explaining SD-WAN to a new colleague. The engineer says that SD-WAN is a 'software-defined' approach to WAN. What does 'software-defined' mean in the context of SD-WAN?

   • AThe network control and management functions are separated from the underlying hardware and implemented in software.
   • BThe WAN is entirely virtual and does not require any physical connections.
   • CAll network functions are performed by a single software application on a server.
   • DThe WAN is managed by the internet service provider (ISP) through a software portal.
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