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WGU D481 – SECURITY FOUNDATIONS QUESTIONS WITH COMPLETE ANSWERS UPDATED
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WGU D481 – SECURITY FOUNDATIONS QUESTIONS WITH COMPLETE ANSWERS UPDATED 1. Compare and contrast the TCP/IP model with the OSI model. How are they different? How are they similar? · OSI is more complex o Physical, data, network, transport, session, presentation, application · TCP/IP is...

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  • June 3, 2024
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  • 2023/2024
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WGU D481 – SECURITY FOUNDATIONS QUESTIONS
WITH COMPLETE ANSWERS UPDATED


1. Compare and contrast the TCP/IP model with the OSI model. How are they
different? How are they similar?
· OSI is more complex
o Physical, data, network, transport, session, presentation, application


· TCP/IP is more used today
o Application, transport, internet, network access layers
What are the major differences between circuit-switched, packet-switched, and
IP-based communications?
· Circuit = telephony/analog
· Packet = digital communication
· IP = most popular today
How does IP-based communication work in today's networks?
Delivers in real-time across complex networks to a destination on the network layer
What is the difference between routing and switching in network technology?
· Routing is the process of directing a packet from one network to another until it
reaches its destination


· Switching subdivides a network into multiple smaller networks
What is the IEEE 802.3 standard, and what are its specifications?
· Also known as the ethernet standard


· Defines the physical and media access control (MAC) of the data link layer for wired
Ethernet networks
What is the difference between IPv4 and IPv6?

, · The IPv4 is a 32-bit address
· IPv6 is a 128-bit hexadecimal address
· IPv6 has more number of addresses available
What is the difference between the Internet and the World Wide Web?
· In simpler terms, the Internet is the vast network that connects devices, while the
World Wide Web is a part of the Internet that allows you to access and browse web
pages.


· Think of the Internet as the roads, and the World Wide Web as the towns and cities
you can visit along those roads.
This individual is credited with inventing the World Wide Web. Who is he?
Tim Berners-Lee
What is the difference between connectionless and connection-oriented
communications?
· Connection-oriented requires less work to set up
o Think of 1-on-1 burger conversation


· Connectionless takes more work to set up but makes sense if there's congestion
o Longer route with less traffic may be faster
o Makes sense for occasional needs
What services does the OSI model Presentation Layer provide?
· Formats and translates data receiving from session layer to application
· Data formatting and encryption
· Email readability
· Converting data into JPEG, GIF, MPEG, etc.
Describe the OSI model Session Layer, and what services does it provide?
· The layer that connects packets into conversations


· Several different modes of communicating
o Full duplex: both ends of connection can communicate

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