CompTIA A+ Certification Core 1 (220-1101) - Internet Tiers

The video explains the structure of the Internet, focusing on its division into tiers. Tier 1 providers are large companies that cover the entire USA through peering agreements, despite being competitors. Network Operations Centers facilitate interconnection between these providers. Tier 2 providers have good coverage but pay for some Internet access, while Tier 3 providers, like Comcast, sell Internet services to individuals and corporations. The video highlights the fluidity of these tiers and the competitive nature of the industry.

What is the primary reason for the formation of peering agreements among Internet companies in the USA?

• To ensure complete coverage of the USA

• To lower the cost of Internet services

• To increase the speed of Internet services

• To reduce competition among companies

What is the main function of Network Operations Centers (NOCs)?

• To monitor Internet traffic globally

• To manufacture Internet routers

• To serve as secure interconnection points for companies

• To provide Internet services to individuals

How do Tier 2 providers differ from Tier 1 providers?

• Tier 2 providers have complete coverage of the USA

• Tier 2 providers are larger than Tier 1 providers

• Tier 2 providers do not pay for Internet access

• Tier 2 providers have some peering agreements but pay for Internet access

What is the relationship between Tier 1 and Tier 2 providers?

• Tier 1 and Tier 2 providers are the same

• Tier 2 providers have more peering agreements than Tier 1

• Tier 2 providers pay Tier 1 for Internet access

• Tier 1 providers rely on Tier 2 for coverage

Which of the following is a characteristic of Tier 3 providers?

• They pay Tier 1 and Tier 2 providers for Internet access

• They cover the entire USA without external help

• They have extensive peering agreements

• They primarily sell Internet services to large companies

What is a common feature of Tier 3 Internet providers?

• They have minimal peering agreements

• They are government-owned

• They provide Internet to Tier 1 providers

• They have a global presence

What is a potential change in the Internet hierarchy?

• Tier 3 providers eliminating Tier 1

• Tier 1 providers merging with Tier 3

• Tier 2 providers becoming Tier 3

• Tier 3 providers becoming Tier 1