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computer class 10 > lesson 1 > Flashcards

lesson 1 Flashcards

1
Q

Define data communication with examples.

A

Data communication is process of transferring data between computers and other electronic devices.

eg: chat, email.

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1
Q

what is telecommunication? Write its examples.

A

Telecommunication is the process of transmitting information over a long distance. Example : mobile phone , radio etc.

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2
Q

Components of data communication

A

Data, Sender, Receiver, Protocol and Medium

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3
Q

What are the modes of data transmission?

A
  1. Simplex mode
  2. Half Duplex mode
  3. Full Duplex mode.
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4
Q

What are the communication media

A
  1. Guided (wired)
  2. Unguided (wireless)
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5
Q

Types of guided media

A
  1. Twisted pair cable
  2. Co-axial cable
  3. Fiber optic cable
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6
Q

Any three unguided transmission media

A
  1. Radio wave
  2. Satellite communication
  3. Micro wave, Infrared..
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7
Q

Two types of twisted pair cable

A
  1. Shielded twisted pair or STP (RJ 45)
  2. Unshielded twisted pair or UTP (D-shell)
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8
Q

Where is co-axial cable mainly used ?

A

Co-axial cable is mainly used for cable tv

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9
Q

Write features of fiber optic cable.

A
  1. It is the widely used cable nowadays.
  2. It uses light to carry the signal so it is the fastest cable. 3. It
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10
Q

Does radio waves transfer through wall?

A

Yes radio waves transfer through wall

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11
Q

what is bandwidth and does radio wave have higher bandwidth or lower bandwidth?

A

Bandwidth is the maximum amount of data transmitted over internet over within an specified time.

Radio waves have lower bandwidth

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12
Q

Can microwave transfer or pass through wall?

A

No, microwave cannot transfer through wall.

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13
Q

Does micro wave have higher bandwidth or lower bandwidth? and write its examples

A

Microwave have higher bandwidth. Microwaves examples: Bluetooth, Wifi devices

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14
Q

What is laser technology in data communication?

A

Laser technology for data communication involves using laser beams to transfer information over various distances, from short range to long range.

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15
Q

Does laser technology have higher bandwidth or lower bandwidth?

A

Laser technology have higher bandwidth.

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16
Q

Define computer network

A

Computer network is the group of computers connected through wire or wireless media in order to share or communicate information by following protocols

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17
Q

advantages of computer network

A
  1. Computer network enables us to share hardware devices such as printers.
  2. Computer network has allowed us to communicate people all over the world.
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18
Q

disadvantage of computer network

A
  1. Initial setup cost is very high for computer network
  2. Skilled person is required to handle the computer network
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19
Q

basic elements of computer networl

A
  1. hardware
  2. Computers
  3. Network devices such as routers, switches hub.
  4. connection medium: this is the path through which the data travels. It can be wired or wireless
20
Q

Define protocols

A

Protocols are the rules and regulation that governs how computers communicate on the network

21
Q

define device driver

A

A device driver is a software that acts as a translator between a hardware device and the operating system.

22
Q

Advantages of lan

A
  • Speed : LANs offer high-speed data transfer rates compared to other
    networks like WANs (Wide Area Networks).
  • Resource Sharing: Devices on a LAN can easily share resources like
    printers, scanners, and even software licenses.
23
Q

two disadvantages of lan

A
  • Limited Reach: LANs are confined to a small geographical area,
    typically a single building, office floor, or home
  • Security Concerns: While LANs can be secure, they can also be more
    vulnerable than WANs if not properly configured
24
Q

advantages of MAN

A
  • Speed: Much faster than WANs for very quick data movement within
    a city.
  • Security: More secure than WANs due to their smaller coverage area
25
Q

disadvantages of man

A
  • Security: MANs cover a larger area than LANs, making them more
    challenging to secure.
  • Cost: Setting up and maintaining a MAN can be expensive.
26
Q

advantages of wan

A
  • Long Distance Connectivity: This allows businesses with multiple
    offices, organizations with remote branches, or even individuals
    spread across different cities or countries to share resources and
    collaborate seamlessly.
  • Scalability: WANs can be easily scaled to accommodate a growing
    number of users and locations
27
Q

disadvantages of wan

A
  • Slower Speeds and Latency: Due to the vast distances involved, WAN
    connections often experience slower data transfer rates.
  • Higher Cost and Complexity: Troubleshooting and managing security
    across a geographically dispersed network can be more complex than
    with a LAN
28
Q

types of network architecture

A
  1. Peer to peer
  2. Client-server
  3. Centralized network
29
Q

advantages of peer to peer

A
  • Reduced cost :P2P networks eliminate the need for a dedicated
    server, which can be expensive to purchase, maintain, and manage.
  • Simpler setup: Setting up a P2P network is also generally simpler
    compared to client-server networks
30
Q

disadvantage of peer to peer

A
  • Security concerns : Malware and viruses can easily spread through
    P2P networks if proper security software isn’t implemented on each
    device.
  • Performance Issues: Unreliable file availability and unpredictable
    download speeds
31
Q

Two advantages of centralized network

A
  • Centralized control: This allows administrators to easily implement
    and enforce security policies like user authentication, and access
    controls across the entire network.
  • Reliable Data Storage and Access: Centralized networks often store
    data on a central server, ensuring consistent backups and easier
    access controL
32
Q

Two disadvantages of centralized network

A
  • Single Point of Failure: If the server malfunctions or experiences an
    outage, the entire network can become inaccessible.
  • Limited Scalability : Difficult and expensive to scale
33
Q

Two advantages of client server network

A
  • Security & Management: Centralized control on a server allows for
    easier security enforcement and updates for all devices.
  • Performance & Scalability: The server efficiently allocates resources
    and additional clients can be added without overloading the system
34
Q

Two disadvantages of client server
architecture

A
  • Reliance on Server: If the server fails, the entire network can go
    down.
  • Performance Limitations: Too many client requests can overload the
    server, slowing down performance
35
Q

What is topology? And its types

A

Arrangements of computers in Local Area Network.
types:
1. Bus topology
2. Ring topology
3. star topology

36
Q

Advantages of star topology

A

1.Easy Management and Troubleshooting: Centralized control
simplifies network management and fault isolation.
2.Scalability: Devices can be added or removed without disrupting the
network

37
Q

disadvantage of star topology

A
  1. Single point of failure
  2. High initial cost
38
Q

Full form of TCP/ IP and its use

A

Transmission Communication Protocol or Internet Protocol is used to handle communication over the internet.

39
Q

HTTP and its function

A

Hyper text transfer protocol is used to transfer html documents

40
Q

SMTP

A

Simple Mail Transfer Protocol is used to send mails.

41
Q

POP

A

Post Office Protocol is used to retrive
mail

42
Q

Function of ethernet

A

To transmit data on Lan using NIC

43
Q

Gopher

A

Searching and retrieving on remote web servers

44
Q

ARP

A

Address Resolution Protocol is used to convert network address into mac address.

45
Q

CDP

A

Cisco discovery protocol is used to share data in cisco devices

46
Q

VOIP

A

Voice over internet protocol is used to send voice over internet

47
Q
A

computer class 10 (2 decks)

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