25년 1회차

운영체제는 시스템 내 모든 자원에 번호를 지정한다. 낮은 번호의 자원을 점유한 프로세스가 높은 번호의 자원을 요청할 때, 이를 허용한다. 그러나 높은 번호의 자원을 점유한 프로세스가 낮은 번호의 자원을 요청할 때, 이는 허용하지 않는다.

셀 안에 표시하는 작은 차트(chart)로, 데이터의 추세를 시각적으로 확인할 수 있다. 선(꺾은 선형), 열(세로 막대형), 승패(음수 혹은 양수)의 방식으로 표현할 수 있다.

ㄱ. 레코드 개수가 $n$일 때 최악의 경우에 검색 시간 복잡도는 $O(n)$이다.
ㄴ. 충돌 해결을 위해 개방 주소 지정(open addressing) 기법을 사용할 수 있다.
ㄷ. 분할 해싱(partitioned hashing)은 범위 질의(range query)를 효율적으로 처리할 수 있다.
ㄹ. 확장성 해싱(extendible hashing) 함수는 레코드 키를 가변 길이 스트링으로 변환시킨다.

FD = {A → B, AB → C, C → D}

ㄱ. 시스템에 영향을 주는 제약 조건을 기술한다.
ㄴ. 시스템의 자료 구조에 대한 명세를 기술한다.
ㄷ. 사용자 인터페이스에 대한 명세를 기술한다.
ㄹ. 시스템 인수를 위한 테스트 기준을 제공한다.

A: So, when are you leaving for India?
B: This weekend. I’ve finished almost everything I had to do.
A: What did you do?
B: A lot. I bought a plane ticket, of course. And I got a visa.
A: ______________________________
B: Yes, it’s an e-visa. I also got a new passport and made a hotel reservation.

A: Hello! I need to send this package to my mom for her birthday. Can you help me with that?
B: Absolutely! Let’s take a look at what you’ve got. Where are you sending it and how quickly do you need it to arrive?
A: I’m sending it to Vancouver, and her birthday is in two weeks, so there’s no rush.
B: Got it. We have a few different shipping options depending on how quickly you want it to arrive. Let’s see what works best for you.
A: Sounds good. _____________________________, as long as it gets there in time for her birthday.
B: In that case, our standard ground shipping should do the trick. It’s the most cost-effective option for non-urgent deliveries.
A: Perfect! Let’s go with that.

Waste Medicine Pickup Service raised public awareness of the need to separately dispose of waste medicines and _______________ preventing environmental pollution by improving the recollection rate of unused medications.

We reconstructed 50 old post offices across the country to create a safe and comfortable environment for both employees and customers. We also _______________ exterior designs that reflect unique regional characteristics, helping the post offices serve as Social Overhead Capital (SOC) to improve residents’ convenience, promote local areas, and boost the local economy.

Prior to the marvels of the computer and its e-mail service, snail mail was the only economical way that foreigners in Korea could keep in touch with their families back home. Snail mail, as the name implies, was slow and letters to and from the United States frequently took a week or more to arrive. In the Joseon era, the first modern postal services in Korea were operated by the Japanese. In Seoul, the mail was delivered to the Japanese post office and then collected by an American and taken to the legation, where a certain flag was flown notifying the Americans that the mail had arrived. Sometimes the mail was merely placed in a sack and sent around to each house - “each person helping himself.” Of course, this was far from perfect and letters were occasionally lost. During the late 1880s, one American allegedly took letters from American advisors to the Korean government and printed the contents in newspapers in Hong Kong.

Genealogy, the study of family history, is certainly nothing new. Family trees have been used for thousands of years to demonstrate claims to wealth and power. But the rise of the Internet has led to the pursuit of new life. According to some sources, genealogy is now one of the most popular topics on the Internet. Modern genealogists have a huge amount of information available online, and are able to connect with people from all around the world with ease. One popular ancestry website provides access to approximately 16 billion historical records. But what’s behind our motivation to find out about our ancestors? Some people may have specific reasons. Tracing your family tree may help you reconnect with lost relatives. Others may want to discover a connection to a historical figure. Perhaps the most common motivation, though, is simple curiosity.

The Korea Stamp Exhibition 2023, highlighting the   (A)   of stamps with content incorporated with emerging technology, was held at the Sejong Center for the Performing Arts in Gwanghwamun for eight days from September 21 to 28, 2023. The exhibition showcased dynamic and realistic stamp content by using AI technology to accentuate the sentimentality of stamps and philately. The future value of stamps was stressed through encounters with the famous people on stamps using generative AI and experiential AI programs. A total of 201,316 people visited the exhibition, attracting not just the stamp collectors who submitted their collections but people from all walks of life who   (B)   beauty and culture.