An IT organization needs to optimize speeds for global content distribution and wants to reduce latency in high-density user locations. Which of the following technologies BEST meets the organization's requirements?
Load balancing is an optimization thing, which the question mentions. It also mentions high density which could indicate that the servers in those locations deal with a lot of traffic. Since CDN isn't in the Network+ objectives, and Load Balancing is, I'm going with A.
I also wanted to select Load Balancer. Except for the word "global content" in the question. The Content delivery network is for geographically wide area, where as LB is for specific area. So, I'm going with CDN.
“A CDN is a distributed network of servers that store cached copies of website content in multiple geographic locations around the world. When a user requests content, the CDN selects the server closest to the user's location to deliver the content. This results in faster delivery times and lower latency.
Load balancing is a technique used to distribute traffic across multiple servers to improve performance and reliability. While load balancing can help optimize speeds, it does not address the issue of reducing latency in high-density user locations.”
So I also initially thought Load Balancing was correct, but now I understand what a CDN is, it does seem to be correct.
What I do want to mention, is that in the question, the term "high density" distracted me. It made me think high density = high load, and therefore load balance.
But the reality is you would build servers for the CDN in high density locations so that your CDN serves to reduce latency for as many users as possible.
That is my understanding. Kind of like when you download a game on steam, you aren't downloading from a server outside your country, you are downloading most likely from a server within your country.
I understand why most would choose the answer ( D ) Content Deliver network, but CDN is nowhere to be found in CompTIA's N+ Review & Study Guide. I would go for what CompTIA wants you to answer and for those who need some context regarding what the book reads.
- pg182 Comptia N+ Review Guide Fifth Edition -
It is common to find load balancers distributing load to web servers since websites have static content, and they are the perfect candidates for this technology. It is also common to employ geographic load balancers because applications are now global, and directing a user to the closet server provides the fastest response to the end user. With the expansion of cloud services, geographic load-balancing is a popular technology.
This is one of those questions where ExamTopic has done poorly in its preparation/setup and has made the question more confusing/ambiguous than helpful. When viewed from a general, unbiased perspective, CDN may be the undoubted correct answer to this question. But as many have already made clear, because this is meant as a study aid for the Network+ exam (and nowhere in the Network+ material does it mention CDN), the answer should be load balancing (A)
CDN is not mentioned anywhere in the NET+ material and therefore should not even be an option on the NET+ exam (I don't even recall it being mentioned in A+)
A Content Delivery Network (CDN) is a distributed network of servers strategically located across various geographic regions. CDNs cache content closer to end-users, reducing the distance that data needs to travel and minimizing latency. By storing content in edge servers near high-density user locations, CDNs can optimize speeds for content delivery, resulting in faster loading times for web pages, videos, and other digital content.
A, This is the only answer here. Most importantly, CDN isn't listed in the acronym list that is provided for the Network + exam and listed at the end of the Network + exam objectives from CompTIA. Load balancing is.
Further, you can look at GSLB or global server load balancing ( not a N+ acronym either btw) which will reduce latency and mange density issues. A CDN is one way of implementing GSLB. Tricky question but once you look up the listed acronyms expected to be correct answers in the N+ exam, only one conclusion can be met.
The question states the CO seeks to " optimize speeds for global content distribution" . Global here being the keyword for a large geographic area. No doubt it refers to CDN.
Load balancers are more suitable for a cluster of servers in the same location.
Check out this link for further clarification:
https://www.splunk.com/en_us/blog/learn/cdns-vs-load-balancers.html
A load balancer main purpose is not to reduce latency, rather to scale out (ie. add servers to handle a growing volume of traffic). A CDN main purpose is to reduce latency.
"to optimize speeds for global content distribution (this is the CDN) , to reduce latency". Means, CDN needs the Load Balancing to meet the requirments.
Content Delivery Network helps reduce latency and improve performance for high-bandwidth content by distributing user requests and serving content directly from edge servers. This brings the content closer to users and sends less traffic to the origin point, delivering superior online experiences.
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