Summary
samenvatting Computer Networks
- Course
- Institution
These four documents summarize the 11 lessons; do not see this as enough to understand the subject matter because the labs are not included.
[Show more]
Seller
Follow
nickhemerycke
Content preview
Networking TodayNetworks have revolutionized modern life by enabling global communication,
connecting people across vast distances, and fostering worldwide
communities.
Network Components
Networks consist of three main components: end devices, intermediary
devices, and network media.
1. End Devices:
○ Source or destination of data (e.g., computers, smartphones,
printers, servers).
○ Example: Your computer sends an email, and the recipient's
device receives it.
2. Intermediary Devices:
○ Connect and manage data flow between end devices.
○ Examples:
■ Switches: Connect multiple devices within a LAN.
■ Routers: Direct data between networks, finding thebest
path.
■ Firewalls: Control and secure network traffic.
■ Wireless Access Points (WAPs): Connect wireless
devices to a wired network.
○ Functions:
■ Regenerate data signals for reliable transmission.
■ Maintain and manage data pathways.
■ Detect and notify errors, enhancing network reliability.
, 3. Network Media:
○ The medium through which data travels.
○ Types:
■ Copper Cables: Transmit data using electrical impulses.
■ Fiber-Optic Cables: Use light for high-speed,
long-distance transmission.
■ Wireless: Transmit data via radio waves.
Common Types of Networks
Networks are categorized by their size, geographic spread, and functionality.
1. Local Area Network (LAN):
○ Covers small areas like homes, offices, or schools.
○ Offers high-speed, controlled communication.
2. Wide Area Network (WAN):
○ Spans large areas, connecting multiple LANs.
○ Managed by various organizations; the internet is the largest
WAN.
3. The Internet:
○ A vast global network of interconnected LANs and WANs.
○ Relies on copper, fiber-optic, and wireless connections.
○ Governed by organizations like IETF, ICANN, and IAB.
Cisco IOS Basics
Cisco IOS (Internetwork Operating System) is used for configuring network
devices.
, 1. Accessing Cisco IOS
(video tutorialhttps://www.youtube.com/watch?v=BK7vepX19_g)
○ Shell:CLI or GUIinterface for interacting with devices.
■ CLI (Command Line Interface):CLI is a text-based
interface where users interact with the computer by typing
commands. It's powerful and efficient, allowing for precise
control over the system. Users need to know the correct
commands and syntax, which can make it less intuitive for
beginners.
■ GUI (Graphical User Interface):GUI uses visual
elements like windows, icons, and buttons to allow users to
interact with the computer. It's user-friendly and intuitive,
making it accessible for all skill levels. However, it can be
less efficient for complex tasks compared to CLI.
○ Kernel: Manages hardware-software communication.
○ Access Methods:
■ Console: Direct physical connection for setup.
■ SSH: Secure remote access.
■ Telnet: Insecure remote access, rarely used.
2. IOS Navigation
○ User EXEC Mode (
>):Basic commands.
○ Privileged EXEC Mode (
#)
:Full access, entered with
enable
.
○ Configuration Modes:
■ Global Configuration: Device-wide settings (
configure
terminal
).
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller nickhemerycke. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.03. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73918 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now