What RFC 2119?

IETF RFC 2119 defines conformance keywords (MUST, SHOULD.), that are often used in specifications. RFC Keywords are better used with well-defined conformance objects (aka classes of products) using RFC Keywords to describe semantics has some use cases (e.g. different level of requirement)

What does RFC mean in history?

By The Editors of Encyclopaedia Britannica | View Edit History. Reconstruction Finance Corporation (RFC), U.S. government agency established by Congress on January 22, 1932, to provide financial aid to railroads, financial institutions, and business corporations.

What is RFC and its purpose?

An RFC (Request for Comments) is a pure technical document published by the Internet Engineering Task Force (IETF). Almost all network protocols for the internet are built based on RFCs. Some RFCs are informational and others are published Internet standards.

What is RFC explain requirements level of on RFC?

RFCs are classified into 5 Requirement Levels: required, recommended, elective, limited use and not recommended. Required. An RFC is labeled required if it must be implemented by all Internet systems to achieve minimum conformance. For example, IP and ICMP are required protocols.

Shall VS must in RFC?

Definitions. RFC 2119 gives the following definitions: MUST This word, or the terms “REQUIRED” or “SHALL”, mean that the definition is an absolute requirement of the specification. MUST NOT This phrase, or the phrase “SHALL NOT”, mean that the definition is an absolute prohibition of the specification.

What was the problem with the RFC?

The RFC lending program failed to prevent the worst financial crisis in American history. The effectiveness of RFC lending to March 1933 was limited in several respects. The RFC required banks to pledge assets as collateral for RFC loans.

Why did Hoover’s RFC fail?

The publication of the identity of banks receiving RFC loans, which began in August 1932, reduced the effectiveness of RFC lending. Bankers became reluctant to borrow from the RFC, fearing that public revelation of a RFC loan would cause depositors to fear the bank was in danger of failing, and possibly start a panic.