[B]Top Down vs Bottom Up Parsing[/B]
Bottom-up parsing starts from the input string and reduces it to the start symbol (leaves → root). Example: LR parsing.
Top-down is simple but less powerful, while bottom-up is complex but handles more grammars.
[B]FIRST Algorithm[/B]
If X is terminal → FIRST(X) = {X}
If X → ε → include ε
If X → Y₁Y₂…Yₙ
Add FIRST(Y₁) (except ε)
If ε in FIRST(Y₁), check next
If all have ε → add ε
Repeat until no change
[B]FOLLOW Algorithm [/B]
Put $ in FOLLOW(...
Date: April 28, 2026
To,
The Principal,
[Name of Your School]
Subject: Prayer for establishing an English Language Club.
Sir,
I, on behalf of the students of our school, humbly request your permission to establish an English Language Club.
This club will help us improve our communication skills, vocabulary, and confidence through debates, creative writing, and group discussions. We believe this initiative will be a great addition to our extracurricular activities.
We hope you will kindly grant us
The Application Layer is the topmost layer of the OSI Model. It is the layer closest to the user and provides network services directly to end-user applications.
Acts as the interface between user applications and the network
Enables software like browsers, email clients, and file transfer tools to communicate over a network
Provides services such as:
File transfer
Email communication
Web browsing
Remote login
HTTP –
Section 1: The Discovery of Viruses
* Dmitri Ivanovski discovered that a disease in tobacco plants was spread by liquid extracted from infected plants.
* Martinus Beijerinck named these tiny disease-causing particles "viruses," which is the Latin word for poison.
* Wendell Stanley showed that viruses can be crystallized, leading to the conclusion that they are not truly alive.
* Viruses are defined as nonliving particles made of proteins, nucleic acids, and sometimes lipids.
Bolded
Network Layer (10 Marks Answer)
The Network Layer is the third layer of the OSI Model. It is responsible for routing, addressing, and forwarding data packets from the source to the destination across multiple networks.
Main Functions
1. Logical Addressing
Assigns IP addresses to devices
Ensures each device is uniquely identified
2. Routing
Determines the best path for data transmission
Uses routing algorithms and tables
3. Packet Forwarding
Moves packets from one network to another
Uses routers
1.Elementary Data Link?
Elementary Data Link Protocols are basic communication protocols used at the Data Link Layer of the OSI Model. They explain how data is transmitted between two devices and introduce concepts like flow control and error control in a simple way.
Types of Elementary Data Link Protocols
1. Unrestricted Simplex Protocol
Communication is one-way (simplex)
Sender continuously sends frames without waiting
No error control or flow control
Assumes receiver can handle all incoming data
24) Importance of Power Planning and Reliability
Power Planning is a critical step in physical design that ensures proper distribution of power (VDD) and ground (GND) across the chip. It is necessary to maintain stable voltage supply to all components and avoid performance degradation.
Proper power planning helps in reducing issues such as IR drop (voltage drop), electromigration, and overheating. Along with this, reliability considerations focus on ensuring long-term operation of the circuit by...
1.what is netwoks hardware and network software?
1. Network Hardware
Network hardware refers to the physical devices used to connect computers and other devices in a network and enable communication.