Science (English Medium) कक्षा १२ - CBSE Important Questions for Computer Science (C++)

Reduce the following Boolean Expression to its simplest form using K-Map:

`E (U, V, Z, W) = sum (2, 3 , 6, 8, 9, 10, 11 , 12 , 13 )`

Verify the following using Boolean Laws : U'+V = U'V'+ U' .V + U.V

Draw the Logic Circuit for the following Boolean Expression: (X'+Y).Z + W'

Derive a Canonical POS expression for a Boolean function F, represented by the following truth table

Reduce the following Boolean Expression to its simplest form using K-Map

`F (X, Y, Z, W) = sum (0, 1, 4, 5, 6, 7, 8, 9, 11, 15)`

Differentiate bel ween Bus Topology and Star Topology of Networks

What are the advantages and disadvantages of Star Topology over Bus Topology

Classify the following Web Scripting as Client-Side Scripting and Server Side Scripting

Java Scripting

Classify the following Web Scripting as Client-Side Scripting and Server Side Scripting

ASP

Classify the following Web Scripting as Client-Side Scripting and Server Side Scripting

VB Scripting

Classify the following Web Scripting as Client-Side Scripting and Server Side Scripting

JSP

Write the expanded names for the given abbreviated terms used in Networking and Communications

SMTP

Write the expanded names for the given abbreviated terms used in Networking and Communications

VoIP

Write the expanded names for the given abbreviated terms used in Networking and Communications

GSM

Write the expanded names for the given abbreviated terms used in Networking and Communications

WLL

CASE STUDY BASED QUESTION

Ayurveda Training Educational Institute is setting up its centre in Hyderabad with four specialised departments for Orthopedics, Neurology and Pediatrics along with an administrative office in separate buildings. The physical distance between these department buildings and the number of computers to be installed in these departments and administrative office are given as follows.

Shortest distance between various locations in meters:

Number of Computers installed at various locations are as follows

1) Suggest the most suitable location to install the main server of this institution to get efficient connectivity.

2) Suggest the best cable layout for effective network connectivity of the building having server with all the other buildings.

3) Suggest the devices to be installed in each of these building for connecting computers installed within the building out of the following

• Gateway
• Modem
• Switch

4) Suggest the topology of the network and network cable for efficiently connecting each computer installed in each of the building out of the following:

Topologies: Bus Topology, Star Topology

Network Cable: Single Pair Telephone Cable, Coaxial Cable, Ethernet Cable

Differentiate between communication using Optical Fiber and Ethernet Cable in context of the wired medium of communication technologies.

Janish Khanna used a pen drive to copy files from his friend's laptop to his office computer. Soon his computer started abnormal functioning. Sometimes it would restart by itself and sometimes it would stop different applications running on it. Which of the following options out ·of (i) to (iv), would have caused the malfunctioning of the computer? Justify the reason for your chosen option:

1) Computer Virus

2)Spain Mail

3) Computer Bacteria

4) Trojan Horse

Ms Raveena Sen is an IT expert and a freelancer. She recently used her skills to access the Admin password for the network server of Super Dooper Technology Ltd. and provided confidential data of the organization to its CEO, informing him about the vulnerability of their network security. Out of the following options (i) to (iv), which one most appropriately defines Ms Sen?

Justify the reason for your chosen option :
1) Hacker

2) Cracker

3) Operator

4) Network Admin

Hi-Standard Tech Traj.ning Ltd. is a Mumbai based organization which is expanding its office set-up to Chennai. At Chennai office compound, they are planning to have 3 different blocks for Admin, Training and Accounts related activities. Each block has a number of computers, which are required to be connected in a network for communication, data and resource sharing.

As a network consultant, you have to suggest the best network related solutions for them for issues/problems raised by them in (i) to (iv), as per the distances between various blocks/locations and other given parameters.

Shortest differences between various blocks/locations:

The number of computers installed at various blocks is as follows:

1) Suggest the most appropriate block/location to house the SERVER in the CHENNAI office (out of the 3 blocks) to get the best and effective connectivity. Justify your answer.

2) Suggest the best-wired medium and draw the cable layout (Block to Block) to efficiently connect various blocks within the CHENNAI office compound.

3) Suggest a device/software and its placement that would provide data security for the entire network of the CHENNAI office.

4) Suggest a device and the protocol that shall be needed to provide wireless Internet access to all smartphone/laptop users in the CHENNAI office