ArticleslgStudy

computer science

IL (network protocol)

IL (network protocol) is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand IL (network protocol) rather than just read about it. In short: The Internet Link protocol or IL is a connection-based transport-layer protocol designed at Bell Labs originally as part of the Plan 9 operating system and is used to carry 9P. It is assigned the Internet Protocol number of 40.

Key takeaways

  • IL (network protocol) belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect IL (network protocol) to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of IL (network protocol) from memory before moving on to harder problems.

Reference excerpt

The Internet Link protocol or IL is a connection-based transport-layer protocol designed at Bell Labs originally as part of the Plan 9 operating system and is used to carry 9P. It is assigned the Internet Protocol number of 40. It is similar to TCP but much simpler. Its main features are:

Reliable datagram service In-sequence delivery Internetworking using IP Low complexity, high performance Adaptive timeouts As of the Fourth Edition of Plan 9, 2003, IL is deprecated in favor of TCP/IP because it doesn't handle long-distance connections well.

Header

See also Fast Local Internet Protocol

References

Further reading Dave Presotto; Phil Winterbottom. "The IL protocol".—The original paper describing IL

Worked examples

Example 1 — a first encounter with IL (network protocol)

Start with the simplest possible case. Write down what IL (network protocol) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to IL (network protocol) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about IL (network protocol) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of IL (network protocol)

In research
IL (network protocol) appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses IL (network protocol) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
IL (network protocol) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Inferno (operating system), Internet Protocol based network software, Network protocols, so understanding it makes those chapters shorter.
In everyday life
Look for IL (network protocol) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study IL (network protocol) in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what IL (network protocol) means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain IL (network protocol) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is IL (network protocol) in simple terms?

The Internet Link protocol or IL is a connection-based transport-layer protocol designed at Bell Labs originally as part of the Plan 9 operating system and is used to carry 9P. It is assigned the Internet Protocol number of 40.

Why does IL (network protocol) matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study IL (network protocol)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on IL (network protocol).

Tags

  • Inferno (operating system)
  • Internet Protocol based network software
  • Network protocols
  • Plan 9 from Bell Labs
  • Telecommunication infrastructure stubs
  • Transport layer protocols

Keep exploring