Engineer Information Communications study guide
Engineer Information Communications · Work through your exam, one topic at a time.
The Engineer Information Communications (정보통신기사) is a Korean national technical certification for engineers who design, build, and operate communication systems and networks. Candidates typically work in telecom carriers, network integration, broadcasting and transmission, or public-sector IT, and many take it to strengthen a technical portfolio or satisfy employer requirements. The Engineer Information Communications study guide has 7 sections and about 2,329 words.
01Information and Communication Systems
This domain tests how signals carry information: time- and frequency-domain representation, sampling and quantization, analog and digital modulation, noise, capacity limits, and basic error-control coding. Numerical items often combine decibels, bandwidth, and bit rate, so unit discipline matters as much as the formulas.
339 words, about 2 min02Communication Networks and Protocols
This domain examines how data is encapsulated, addressed, routed, and delivered across LANs and WANs. Expect questions on layered models, Ethernet switching, IPv4/IPv6 addressing and subnetting, routing, transport protocols, and core Internet services.
307 words, about 2 min03Wireless and Mobile Communications
This domain covers radio propagation, cellular reuse, multiple access, antenna techniques, link budgets, mobility, and modern systems such as LTE and 5G NR. Questions often require converting between power, path loss, and interference ratios.
322 words, about 2 min04Optical and Transmission Systems
This domain tests optical fibre transmission: attenuation, dispersion, optical sources and detectors, WDM, amplification, noise, receiver sensitivity, and digital transport hierarchies. Numerical power-budget questions are common.
328 words, about 2 min05Information Security
This domain tests confidentiality, integrity, authentication, and availability controls, together with the cryptographic primitives and protocols that implement them. Expect conceptual questions plus small RSA or key-management calculations.
373 words, about 2 min06Software and Programming
This domain tests program design and implementation: data structures, algorithm complexity, programming paradigms, testing, development process, and basic database and concurrency concepts. Questions may ask for output tracing or complexity comparison.
316 words, about 2 min07Communication Law and Standards
This domain tests the legal and standards framework around communications: which body produces which standard, how spectrum is allocated, what equipment approval and privacy obligations apply, and how standards interact with regulation. Jurisdiction-specific rules vary, so identify the governing authority before applying a rule.
344 words, about 2 min