কোনটি ভুল?

Created: 4 years ago | Updated: 11 months ago

Updated: 11 months ago

ক

SAARC- South Asian Association for Regional Co-operation
খ

EEC- East European Countries
গ

ASEAN- Association of South East Asian Nations
ঘ

WHO- World Human Organisation

448

ব্যাখ্যাঃ

Topic: Web Architecture & RESTful APIs

Question: Which of the following HTTP methods is guaranteed to be idempotent according to the official HTTP/1.1 specification (RFC 7231)?

Context: An HTTP method is considered idempotent if making multiple identical requests has the same intended effect on the server as making a single request.

Options:

[A] POST
[B] PUT
[C] PATCH
[D] CONNECT

Correct Answer: [B] PUT

Detailed Explanation:

An operation is idempotent if the side-effects of N > 0 identical requests are the same as for a single request.

PUT (Correct): It is defined as idempotent. Sending the same representation multiple times consistently replaces the target resource with that exact state.
POST (Incorrect): It is not idempotent. Multiple identical POST requests typically result in multiple distinct resources being created.
PATCH (Incorrect): It is not guaranteed to be idempotent. While certain patch instructions can be idempotent, operations such as appending data or incrementing a value produce different results on repeated executions.
CONNECT (Incorrect): It is used to establish a bidirectional tunnel and is not categorized as an idempotent request method.

Key Takeaway: Safe methods (such as GET, HEAD) and modifying methods like PUT and DELETE are idempotent, whereas POST and PATCH are not.

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1 week ago

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ABM- Anti-Ballistic Missile

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ACD- Asia Cooperation Dialogue.

AFC- Asian Football Confederation.

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AIDS- Acquired Immune Deficiency Syndrome

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ECG- Electro Cardio Gram

FM- Frequency Modulation.

GMT- Greenwich Mean Time.

HDC- Human Development Centre.

HDI- Human Development Index.

HIV- Human Immunodeficiency Virus.

IBA- Institute of Business Administration.

ICC- International Conference Center.

ICC- International Chamber of Commerce.

ICC- International Cricket Council.

ICC- International Criminal Court.

ICDDRB- International Centre for Diarrhoeal Diseases Research Bangladesh.

ICI- Imperial Chemical Industries.

ICJ- International Court of Justice.

IJC- International Jute Corporation.

IIT- Islamic Institute of Technology.

ILO- International Labour Organization.

IMO- International Maritime Organization.

IMO- International Mathematical Olympiad.

IMO- International Meteorological Organization

IPO- International Police Organization.

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IRRI- International Rice Research Institute.

ISI- Inter-Services Intelligence.

ITU- International Telecommunication Union

JP- Justice of the Peace.

LLB- Bachelor of Law.

LMG- Light Machine Gun

MA- Master of Arts

MBBS- Bachelor of Medicine and Bachelor of Surgery.

MP- Member of Parliament.

M. Phar- Master of Pharmacy.

MSC- Master of Science.

NDI- National Democratic Institute

NP- Notary Public

PC- Personal Computer.

PHD- Doctor of Philosophy

PM- Prime Minister

PNC- Palestine National Council

PTO- Please Turn Over

RA - Royal Academy

RAW- Research and Analysis Wing

RMS- Railway Mail Service

SDI- Strategic Defence Initiative

SEATO- South East Asian Treaty Organization

SIM- Subscriber Identity Module

SIS - Secret Intelligence Service

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UK- United Kingdom

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