Class-X-Solved Exercise:
Unit-6- Web Applications
(Session-2 Networking Fundamental)
Part-II
III. Short Answer Questions:
1. What is computer network?
Answer: A computer network is a system for communication among two or more computers. These networks may be wired or wireless.
2. Differentiate between a campus area network and a local area network.
Answer: Local Area Network- LAN is a small network in which the computers and other network devices share the resources within a small area like an office building.
Campus Area Network- CAN is a network spanning multiple LAN but is smaller than a MAN, like in a university or local business campus.
3. What is a wireless network?
Answer: A computer network without wire is called a wireless network. Wi-Fi which stands for wireless fidelity is the most popular wireless communication protocol.
4. What is a Wi-Fi?
Answer: Wi-Fi which stands for wireless fidelity is the most popular wireless communication protocol used for home, private business LANs and public hotspots. Wi-Fi is also often used for connecting computers to the Internet.
5. List the advantages of a Wi-Fi network.
Answer: Advantage of Wi-Fi network.
1. It is fast (11mbps)
2. It is reliable
3. It has a long range (1000 ft/305 m in open areas, 250 to 400 ft/ 76 to 122 m in closed areas.
4. It is easily integrated into the existing wired-Ethernet networks.
6. What is Bluetooth?
Answer: Bluetooth is a wireless protocol used to wirelessly link phones, computers and other network devices over short distances, typically up to 30 feet(10 meters).
7. How do devices in an infrared network communicate?
Answer: Infrared technology allows computing devices to communicate via short-range wireless signals. With infrared, computers can transfer files and other digital data bi-directionally.
8. Give at least two limitations of a Bluetooth network.
Answer: 1. Bluetooth networking is much slower
2. More limited in range.
9. Differentiate between Wi-Fi and Bluetooth wireless networks in terms of their range and speed.
Answer:
Wi-Fi:
1. Wi-Fi networking is faster than Bluetooth network.
2. Wi-Fi network range is so large compare to Bluetooth network.
3. Wi-Fi network support many devices at once.
Bluetooth:
1. Bluetooth networking is slower than Wi-Fi networking.
2. Bluetooth network range is limited compare to Wi-Fi network.
3. Bluetooth network support fewer devices.
10. What is the limitation of the Infrared technology?
Answer: Infrared technology limitation is short-range wireless signals.
Infrared technology is used for short distance only.
11. What is the Internet?
Answer: The internet is a network of computers spanning the globe. A network simply means two or more computers connected together.
12. Name the types of networks on the basis of the area covered by them.
Answer: Types of network basis of the area.
1. LAN (Local Area Network)
2. MAN (Metropolitan Area Network)
3. WAN(Wide Area Network)
13. Name the categories of networks on the basis of their functionality.
Answer:
1. Peer-to-Peer networks
2. Client-server networks
14. Name the categories of networks on the basis of connection method.
Answer:
1. Wired
2. Wireless
15. Name the communication mediums used in wireless networks.
Answer: Communication mediums used in wireless networks.
1. Wi-Fi
2. Bluetooth
3. Infrared
16. Name the devices required to set up a wireless LAN.
Answer: A WLAN required two components.
1. Wireless access point
2. Wireless LAN Card
17. How far can a Bluetooth device send signals?
Answer: Bluetooth device can send signals up to 30 feet(10 meters).
18. What is the distance range of a Wi-Fi enable device in open areas?
Answer: Distance range of a Wi-Fi device in open areas: 1000 ft/305 m in open area.
19. Write the following terms in their full form:
A. LAN B. CAN C. GAN D. WI-FI E. MBPS F. WLAN
Answer:
A. Local Area Network
b. Campus Area Network
c. Global Area Network
d. Wireless fidelity
e. Mega byte per second
f. Wireless Local Area Network
20. What is the need of a computer network?
Answer: Computers have become an integral part of any type of organization. Computer places at different places in an organization. So we need network to connect each computer with each other in a organization.
21. List any 3 advantages of creating computer networks.
Answer:
1. Resource sharing
2. Reliability
3. Communication
22. Discuss the different types of computer networks on the basis of their geographical span.
Answer: There are different types of networks.
1. LAN 2. MAN 3. WAN 4. GAN 5. SAN 6. CAN 7. PAN
23. List two advantages of wireless networks.
Answer:
1. There is no need to install wire in wireless network.
2. In wireless network signals can be send in large area.
24. List two limitations of wireless networks.
Answer:
1. There are greater chances of radio interference due to weather conditions.
2. Data transfer rates drop as distance increases.
25. What is a Broadband connection?
Answer: Broadband connection offer another way to connect to the internet. Through the use of cable modem you can have a broadband internet connection that is designed to operate over cable.
26. What is client-server network?
Answer: These networks are more suitable for larger set-ups. A central computer or server acts as the storage location for files and applications shared on the network.
27. Write the differences between LAN and WAN.
Answer: LAN-Local Area Network is used for small area like a office or a building.
WAN-Wide Area Network is used for large area like one country to another.
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