COMPUTER NETWORK WEEK 7 Flashcards
What is computer networking, and what are its primary purposes?
Computer networking involves interconnected devices that exchange files and share resources, such as printers or storage devices, enabling communication and collaboration.
Set up a simple local area network (LAN) between two devices and share a file.
Describe the steps and challenges you faced.
Answer:
Connect the devices to the same network using Ethernet or Wi-Fi.
Enable file sharing on one device.
Access the shared folder from the other device using its network path.
Explain the significance of ARPANET in the development of modern networking.
ARPANET was the first public packet-switched network, introducing concepts like packet switching and protocols (e.g., TCP/IP) that form the foundation of the internet.
Research an application of packet switching in modern networks and explain how it improves data transmission efficiency.
Packet switching enables efficient use of network resources by splitting data into packets sent independently. Examples include email and video streaming.
Compare and contrast LAN and WAN in terms of scale, speed, and applications.
Answer:
LAN: Confined to small areas like buildings; faster; used for internal communication.
WAN: Covers large geographical areas; slower; used for interconnecting offices globally.
Create a network diagram illustrating a WAN that connects three LANs in different cities. Explain the connections and technologies used.
Example diagram:
LANs connected via routers.
WAN uses leased lines or satellite links for inter-city communication.
What are the key differences between simplex, half-duplex, and full-duplex data transmission modes?
Simplex: One-directional communication (e.g., TV broadcast).
Half-duplex: Two-directional but one at a time (e.g., walkie-talkies).
Full-duplex: Simultaneous two-directional (e.g., phone calls).
Simulate a full-duplex data transmission using two devices (e.g., chat applications) and measure latency. Explain the results.
Example: Using messaging apps to test response times; latency might depend on network speed and protocol efficiency.
How do TCP and IP work together to ensure accurate data transmission across networks?
IP identifies the destination address for data packets.
TCP ensures reliable delivery by managing data integrity and reordering packets.
Use a network diagnostic tool like ping or traceroute to track a packet’s journey to a website. Interpret the results.
Example: ping google.com shows response time, while traceroute google.com shows the packet’s path through routers.
Differentiate between the World Wide Web and the internet.
The internet is the global network infrastructure, while the World Wide Web is a collection of content (websites, hyperlinks) accessed via the internet.
Open a webpage and inspect its source code to identify HTML elements and the URL structure. Explain how these elements contribute to web functionality.
Example: HTML tags define structure (e.g., <p> for paragraphs), and the URL specifies the resource’s location.
Describe the advantages and limitations of WLANs compared to wired LANs.
Advantages: Mobility, reduced cable clutter.
Limitations: Potential interference, slower speeds compared to wired.
Set up a WLAN in your home or office. Connect a device and test its speed using a speed test tool. Compare it with a wired connection.
Example: WLAN might have lower speeds due to signal interference or distance from the router.
Explain the difference between synchronous and asynchronous transmission. Provide examples of applications for each.
Answer:
Synchronous: Continuous data stream, synchronized by a clock (e.g., file transfer).
Asynchronous: Data sent in intervals with start/stop bits (e.g., emails).
Test asynchronous transmission by sending a large email with attachments. Record the upload time and identify the factors affecting it.
Factors include internet speed, server response, and attachment size.
Discuss how computer networking has transformed industries like education and healthcare.
Networking enables online learning, telemedicine, data sharing, and remote collaboration, improving efficiency and accessibility.
Identify a networking technology (e.g., VPN) used in your organization or school. Explain its purpose and test its functionality.
Example: A VPN secures remote access to internal resources by encrypting connections.
