Computer Science 3 Marks Each

Speed–

• Faster web browsing

• Faster file transfer

Service –

• Better video clarity

• Better security

FTP OR Telnet OR TCP

The computer plays a vital role in cybercrime.

(i) Computer or computer network as a target(Example Ransomware).

(ii) Using the computer as a weapon to do real-world crimes. (Virus, Malware etc)

The authorisation means the process of permitting to access data or resources by user or system. Authentication means the process of identifying or verifying the user’s identity by comparing the credentials provided by the users. These credentials may be the password, Smart card, the biometric method such as a fingerprint.

Plagiarism is the copying of someone else’s idea or work and pretending it as own’s own thought or creation.

Makes web more interactive through online social media video sharing possible in the websites

4G gives a speed of approximately 100 Mbps whereas 3G gives a speed of approximately 2 Mbps. 4G takes less time than 3G in call establishment

Protocol: HTTP OR TCP/IP

Browser: Chrome OR Internet Explorer OR Firefox O R OPERA O R SAFARI OR any other correct Browser Name

PAN Examples:

(i) Connecting two cell phones to transfer data

(ii) Connecting smartphone to a smart watch

LAN Examples:

(i) Connecting computers in a school

(ii) Connecting computers in an office

A Trojan Horse is a code hidden in a program, that looks safe but has hidden side effects typically causing loss or theft of data, and possible system harm.

Packet Switching follows store and forward principle for fixed packets. Fixes an upper limit for packet size. Message Switching follows store and forward principle for complete message. No limit on block size.

When a Website with cookie capabilities is visited, its server sends certain information about the browser, which is stored in the hard drive as a text file. It’s a way for the server to remember things about the visited sites.

(b) and (c)

Aworm isa self-replicating computer program. It uses a network to send copies of itself to other computers on the network and it may do so without any user intervention. Most of the common anti-virus(anti-worm) remove worm.

(i) Wired – Optical Fiber

(ii) Wireless – Infrared OR Microwave

FTP is a protocol to transfer files over the Internet, whereas HTTP is a protocol which allows the use of HTML to browse web pages in the World Wide Web.

(i) Trojan/Virus/Worm Attack

(ii) Unauthorised access and Hacking

(iii) Email spamming

(iv) Sending threatening emails.

(v) Email frauds

(vi) DOS (Denial of Service) Attack

(vii) IPR issues

(viii) Cyber Terrorism

(ix) E-commerce frauds

(x) Banking/credit card/ debit card frauds

(xi) Online gambling

(xii) Child Pornography

(xiii) Cyberbullying / Stalking

(xiv) Identity Theft

The Information Technology Act 2000 Chapter IX Sec 66C deals with Identity theft in India

The penalty for identity theft:

Any person/organisation who fraudulently or dishonestly makes use of the electronic signature, password or any other unique identification feature of any other person shall be penalised with imprisonment of either account for a term which may upto 3 years and shall also be liable to fine which may extend to rupees one lakh.

Advantages:

(i) It is easy to install and maintain.

(ii) It is very inexpensive.

(iii) It can be easily connected.

Disadvantages:

(i) Because of high attenuation, it is incapable of carrying a signal over long distances without the use of repeaters.

(ii) Its low bandwidth capabilities make it unsuitable for broadband.

Server facilitates sharing of data ,software and hardware resources (e.g. printers , modems etc.) on the network.