172만명의 커뮤니티!! 함께 토론해봐요.
해결됨
서버개발자 과제전형 완벽가이드 - 1편
학습관련 질문을 남겨주세요! 상세히 작성주시면 더 좋아요 🙂 안녕하세요, 재밌는 강의 만들어주셔서 감사합니다! 저는 먼저 구현 후, 강사님의 강의를 보며 리팩토링을 진행하고 있습니다. 제가 궁금한 것은 강사님은 external 모듈에서 naver/kakao 를 하위 모듈로 분리하셨는데, 저는 external 하위에 kakao 패키지, naver 패키지로 분리했었습니다. 그래서, 모듈로 분리하신 이유가 무엇인질 고민하다가 naver 와 kakao 의 수정되는 주기가 달라서 빌드/배포에 이점이 있겠다는 생각이 들었는데 강사님은 어떤 기준으로 모듈과 패키지를 선택하시는지 질문 드립니다.
해결됨
(2026 최신!) 일주일만에 합격하는 정보처리기사 실기
for문과 if문을 통해 가장 첫번째 달성하는 순간 return(i,j)까지는 이해 했는데요. 해당 코드를 봤을때, 첫번째 i for문과 두번째 j for문이 있는데 가장 밖에 return -1은 첫번째 i for문에 return이 아닌 함수 fp(arr)의 return으로 봐야하는건가요? i for문과 j for문에 해당하는 리턴값이 없을경우에 영향을 미치는 걸까요? return(i,j) 값을 받아 함수를 탈출할때, return -1은 영향이 없는지 궁금합니다.
미해결
실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발
[질문 템플릿] 1. 강의 내용과 관련된 질문인가요? (예) 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예) 3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예) [질문 내용] 안녕하세요. 영한님. 프로젝트 환경설정 - JPA와 DB 설정, 동작확인 오탈자 제보합니다. 강의에서는 Spring을 사용하고 있기 때문에 Spring의 org.springframework.transaction.annotation.Transactional 을 사용하셨지만 수업자료는 jakarta.transaction.Transactional 을 사용하고 있습니다. [1. 프로젝트 환경설정 | JPA와 DB 설정, 동작확인] import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.annotation.Rollback; import org.springframework.transaction.annotation.Transactional; import 문 수정 내용입니다. 감사합니다.
해결됨
(2026 최신!) 일주일만에 합격하는 정보처리기사 실기
지금 7강 조건문 듣고 있는데 파일에 문제가 있는지 수업자료를 열면 pdf 프로그램이 cpufmf 80% 가까이 잡아먹으면서 실행이 되지 않습니다. 파일 크기가 2mb 밖에 안되는데도 저렇게 잡아먹는거 보면 파일에 문제가 있는거 같아요
미해결
백엔드 개발을 위한 필수 강의 - 스프링 부트3
'섹션 1. 1장 스프링 부트 개발 준비하기' - '1. JDK와 STS설치, 웹 서비스의 동작 원리, Spring Boot Devtools과 롬복 설치 등' 관련된 내용 입니다. 'LiveReload++'가 '이 확장 프로그램은 Chrome 확장 프로그램 권장사항을 준수하지 않으므로 더 이상 지원되지 않습니다.'라고 뜨면서 '크롬에 추가' 버튼이 비활성화 되네요. 혹시 LiveReload++와 비슷한 대체할만한 게 있나요?
해결됨
기초 탄탄! 독하게 시작하는 Java - Part 2 : OOP와 JVM
String은 equals 함수를 기본적으로 제공하는데 compareTo를 이용하는 이유가 궁금합니다. 강의에서 말씀하신 동등성을 표현하려면 equals를 사용하는게 오히려 맞는거 아닐까요??
해결됨
6주 완성! 백엔드 이력서 차별화 전략 4가지 - 똑같은 이력서 속에서 돋보이는 법
안녕하세요. 인덱스를 활용한 조회 성능 개선을 공부하던 중 궁금한 점이 생겨 질문드립니다. 현재 저는 OFFSET 기반 pagination을 사용하는 서비스 를 개발하고 있으며, 다음과 같은 환경에서 성능 테스트를 진행했습니다. 데이터: 약 1,000만 건 서버: EC2 t3.small DB: RDS t4g.micro k6 vus100 1. 문제 상황 초기에는 OFFSET 제한 없이 마지막 페이지까지 이동 가능하도록 구현했습니다. 하지만 데이터가 1,000만 건 수준으로 증가하자, 깊은 페이지로 갈수록 조회 속도가 급격히 느려지는 문제 를 확인했습니다. 2. 고민 및 제약 일반적으로 이 문제는 Keyset Pagination(커서 기반) 으로 해결하라고 많이 알려져 있습니다. 하지만 제 서비스는 👉 네비게이션 바를 통한 페이지 직접 이동 (ex. 1, 10, 100 페이지 클릭) 이 필요하기 때문에 Keyset 방식만으로는 요구사항을 만족시키기 어렵다고 판단했습니다. 3. 적용한 개선 방법 다음과 같은 방식으로 성능 개선을 진행했습니다. OFFSET 최대 범위를 제한 (최대 10,000 페이지 / OFFSET 100,000) 커버링 인덱스 적용 조회 방식 개선 먼저 ID만 조회 → 이후 필요한 10건만 상세 조회 전체 게시글 수(count)는 캐싱 처리 4. 성능 개선 결과 [Page 10] avg: 1.4s → 700ms p95: 4.5s → 1.8s [Page 100] avg: 17s → 1.18s p95: 24s → 3.3s [Page 1000] avg: 32.1s → 1.7s p95: 59s → 4.27s 5. 추가 제약사항 로그인 사용자와 비로그인 사용자의 조회 결과가 다름 (사용자별 구독 게시글이 포함됨) 따라서 캐시는 비로그인 사용자에만 적용 위 성능 수치는 로그인 사용자 기준 6. 현재 고민 위와 같이 개선했지만, 👉 여전히 성능이 충분하지 않다고 느끼고 있습니다. 특히 궁금한 점은 다음과 같습니다. 7. 질문 OFFSET 기반 pagination을 유지하면서 👉 추가로 성능을 개선할 수 있는 방법이 있을까요? 다음과 같은 방법들을 고려했는데, 방향성이 맞는지 궁금합니다. RDS를 2개를 사용하여 조회 성능 데이터를 각각 2개의 db가 처리하도록 한다? Keyset + OFFSET 혼합 방식 ( 일반적인 페이지 이동은 Keyset Pagination을 사용하고, 사용자가 특정 페이지를 직접 입력하거나 점프하는 경우에만 제한적으로 OFFSET 기반 조회를 사용하는 혼합 방식) RDS 스펙 업그레이드 또한 에펨코리아( https://www.fmkorea.com/ )와 같은 대형 커뮤니티는 제가 원하는 페이지 네이션 방식을 사용하면서 깊은페이지(최대 1만)도 지원하고 동시접속자 수십만 페이지 수천~수만 대량 데이터 환경에서도 빠른 조회 성능을 유지하는데 👉 이러한 서비스들은 어떤 방식으로 pagination 및 조회 성능을 처리하는지 궁금합니다.
미해결
자바 ORM 표준 JPA 프로그래밍 - 기본편
select o from Order o where o.orderAmount > ALL(select p.stockAmount from Product p) ALL 예제가 강의록에 위와같이 되어있던데요. 이게 아래 sql 문처럼 서브쿼리에 MAX 적용한 거랑 동일한 결과를 내는 걸까요?? select o from Order o where o.orderAmount > (select MAX(p.stockAmount) from Product p)
해결됨
2026 벼락치기 합격! 기출문제 집중 정보처리기사 실기
현재 다운로드 파일 압축이 안풀립니다. 잘못된 파일로 나와요. 혹시 해결방안이 있을까요? 메일로 보내주신다면 hiu001045@naver.com 으로 부탁드립니다
해결됨
(2026 최신!) 일주일만에 합격하는 정보처리기사 실기
안녕하세요 24년 2회 1:11:35 질문입니다. 응집도에 관해 영상으로 올리셨다고 하셨는데 영상 제목이 무엇일까요??
미해결
AI 에이전트 개발 오리엔테이션
Why Businesses Need a Mobile App Development Company in UAE The demand for a reliable mobile app development company in uae has grown fast as businesses shift toward digital platforms. From startups to established enterprises, companies now depend on mobile apps to reach customers, manage operations, and stay competitive. In a market like the UAE, where users expect smooth, fast, and user friendly digital experiences, choosing the right development partner is not optional anymore. A strong mobile presence helps brands connect with their audience in real time. Whether it is eCommerce, fintech, healthcare, or logistics, mobile apps play a direct role in user engagement and revenue growth. This is why businesses are actively searching for experienced mobile app developers who understand both technology and the regional market. DXB APPS and Its Role in UAE’s App Development Industry DXB APPS has positioned itself as a trusted name in the app development uae ecosystem by focusing on practical business needs rather than just technical delivery. The company works closely with clients to understand their goals, then builds applications that solve real problems. Their approach is simple but effective. They do not just build apps, they build solutions that perform under real conditions. This includes user behavior analysis, performance optimization, and ongoing support after launch. In a competitive region like Dubai, where expectations are high, this level of attention makes a clear difference. Understanding the UAE Mobile App Market The UAE is one of the most digitally connected regions in the world. High smartphone penetration and strong internet infrastructure have created an environment where mobile apps are part of daily life. This has increased the need for a capable mobile app development agency that can deliver quality across platforms. Businesses here are not just looking for basic apps. They want scalable systems, secure integrations, and designs that match global standards. That is why many organizations choose a custom mobile app development company instead of going for generic solutions. Custom apps allow businesses to control features, performance, and user experience more effectively. What Makes DXB APPS Stand Out DXB APPS focuses on delivering tailored solutions that align with business goals. Instead of using a one size fits all method, they build apps based on specific client requirements. This includes everything from UI design to backend architecture. The team combines technical expertise with market insight. They understand what users in Dubai expect from mobile apps, which helps them design better user journeys. Their process includes research, planning, development, testing, and deployment, all handled with close client involvement. Another factor that sets them apart is their focus on long term value. They ensure that apps remain functional and relevant even after launch by offering updates and maintenance support. iOS App Development in Dubai - A Growing Demand With a large portion of high income users relying on Apple devices, ios app development in dubai has become a priority for many businesses. iOS users tend to expect polished design and high performance, which requires experienced developers. DXB APPS has worked extensively on iphone app development dubai projects, building apps that meet Apple’s strict guidelines. Their experience as an ios app development company dubai allows them to create apps that are not only visually appealing but also technically sound. From enterprise apps to customer facing platforms, iOS development remains a key area for businesses targeting premium users in the UAE. The Importance of Custom Mobile App Development Generic apps often fail to meet business expectations because they lack flexibility. This is where a custom mobile app development company becomes valuable. Custom apps are designed to match specific workflows, user needs, and business goals. DXB APPS focuses heavily on customization. They build apps that integrate with existing systems, support business operations, and provide a better user experience. This approach helps businesses scale without facing technical limitations later. Customization also allows companies to add unique features that differentiate them from competitors. In a crowded market like the UAE, this can be a major advantage. Choosing the Right App Development Companies in UAE There are many app development companies in uae, but not all offer the same level of expertise. Businesses need to evaluate factors like experience, portfolio, communication, and post launch support before making a decision. DXB APPS stands out because of its balanced approach. They focus on both technical quality and business outcomes. Their team of app developers uae works closely with clients, ensuring transparency and clear communication throughout the project. This reduces risks and helps businesses stay on track with timelines and budgets. Future Trends in Mobile App Development UAE The app development uae market is evolving quickly. Technologies like artificial intelligence, machine learning, and cloud integration are becoming part of modern apps. Businesses are also focusing more on user experience, data security, and performance optimization. Companies like DXB APPS are adapting to these changes by updating their development practices. They invest in new tools and frameworks to ensure that their apps remain competitive in the long run. Another growing trend is cross platform development, which allows businesses to reach both Android and iOS users efficiently. However, native development still plays a strong role, especially in ios app development company in uae projects where performance and design quality are critical. Final Thoughts on Mobile App Development in UAE Choosing the right development partner can shape the success of your digital strategy. A reliable mobile app development company in uae will not just build your app but also guide you through the entire process, from idea to launch and beyond. DXB APPS continues to prove its value by delivering practical, scalable, and user focused applications. With a strong understanding of the local market and a skilled team of mobile app developers , they remain a solid choice for businesses looking to build impactful mobile solutions in the UAE.
미해결
AI 에이전트 개발 오리엔테이션
Why Real Scenarios Matter for Cisco 500-443 Preparation If you are preparing for the Cisco 500-443 exam, you already know this is not a theory-heavy test. It checks how well you can think through real AppDynamics situations. Many candidates read documentation but still struggle when a question describes a slow application, a spike in response time, or an unexpected business transaction issue. The exam expects you to connect metrics, events, and configurations in a practical way. That is where scenario-based preparation becomes critical. In real exam questions, you are often placed in the role of an engineer who needs to identify the root cause of performance issues. You are not just recalling features. You are interpreting data from dashboards, understanding baselines, and deciding what action makes sense. Understanding Application Performance Baselines and Deviations One common scenario in the exam focuses on baselines. You might be shown a normal performance pattern and then asked to analyze a deviation. Many candidates miss the detail that AppDynamics uses dynamic baselines, not fixed thresholds. If you treat every spike as an issue without comparing it to historical behavior, you will likely choose the wrong answer. A typical question may describe increased response times during peak hours. The trap here is assuming it is always a problem. In reality, the system might already account for that pattern. You need to check if the deviation is outside the learned baseline range. This is where hands-on familiarity helps. You start to see how AppDynamics distinguishes normal variation from real anomalies. Business Transactions and Flow Maps in Troubleshooting Another area where candidates lose marks is business transaction analysis. The exam often presents a scenario where a transaction is slow, and you must trace it through multiple tiers. This is where flow maps come in. You need to understand how AppDynamics maps calls between services and how delays propagate. A slowdown in a database call can affect the entire transaction chain. Many questions test your ability to pinpoint where the delay starts, not just where it is observed. When practicing with Cisco 500-443 questions, especially realistic ones, you begin to see patterns. That is why many candidates look for buy cisco cceaar 500-443 questions by certprep.io to get exposure to these scenario-driven problems that mirror the exam style closely. Metrics, Snapshots and Root Cause Analysis The exam also places strong emphasis on metrics and transaction snapshots. You may be given a snapshot with detailed timing breakdowns and asked to identify the issue. This is not about memorizing metric names. It is about understanding what each metric represents in context. For example, if you see high CPU usage along with increased response time, you need to decide whether CPU is the cause or just a symptom. Similarly, slow database queries might appear as backend call delays. The key is to correlate metrics instead of looking at them in isolation. Candidates often rush through these questions. A better approach is to pause and mentally reconstruct the system behavior. Ask yourself what changed, where the delay started, and what data supports that conclusion. Health Rules, Alerts and Policy Actions Health rules and alerting policies are another core part of the exam. You might be asked how to configure alerts for specific conditions or how to reduce noise from false positives. Many candidates fail here because they focus only on default configurations. Real scenarios test whether you can fine-tune health rules based on application behavior. For example, setting a static threshold for all environments rarely works. You need to align rules with baselines and business impact. Policy actions also come into play. The exam may describe a situation where an alert should trigger a specific response. You need to know how AppDynamics connects health rule violations to automated actions. Preparing with the Right Practice Approach At this stage, the biggest gap for most candidates is not knowledge but application. You might understand each feature individually, but the exam combines them into layered scenarios. That is why targeted practice matters. Using cisco prep materials by certprep.io can help bridge this gap. Their approach focuses on realistic exam-style questions that reflect how AppDynamics problems appear in the actual test. Instead of random practice, you get structured exposure to full syllabus coverage, which helps reduce exam stress and builds confidence. If your goal is to pass quickly without second guessing your answers, this kind of focused preparation can make a clear difference.
해결됨
(2026 최신!) 일주일만에 합격하는 정보처리기사 실기
3주 정도 남았는데 방향성이 안잡히는거 같아요 문법 강의를 다 듣자니 기억에 남는 것은 별로 없고.. 새로운 지식들만 있네요. 차라리 기출 강의부터 먼저 보는게 나을까요?
해결됨
(2026 최신!) 일주일만에 합격하는 정보처리기사 실기
다차원 배열과 문자열 배열 21:45 다차원 문자열 배열에서 포인터 변수 관련으로 질문이 있습니다. *arr[2][2]={{"Hello", "World"}, {"app", "dev"}} 이렇게 2차원 문자 배열이 있을 때 printf("%c\n", arr);의 답은 arr의 초기값으로 H인지 아니면 Hello인지 궁금합니다. 그리고 arr+1 또는 arr ++ 하면 다음 주소로 이동하는 값을 나타내는 것이라고 하는데 그러면 답이 e인지 아니면 World인지 궁금합니다.
해결됨
(2026 최신!) 일주일만에 합격하는 정보처리기사 실기
다차원 배열과 문자열 배열 1:14 예를 들어, {2, 4, 8, 10, 12} 라는 배열이 있을 때 포인터 p 변수 경우 *(p+4)를 하면 12가 답이 됩니다. 하지만 아래와 같이 다차원 배열 일 때 {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}} *(p+4)를 하면 답이 어떻게 되는지 궁금합니다.
미해결
포트폴리오 어나더레벨 | 합격하는 이력서 작성법
안녕하세요! 좋은 강의 감사합니다! 제가 1년 동안 기획하고 개발해서 플레이 스토어에 출시한 커뮤니티 앱이 있습니다. 그 후 6개월동안 꾸준히 업데이트하고 관리해서(코드 13만줄, 앱 계속 운영중) 현재 1300다운로드, 리뷰 80개를 달성했는데, 이제 취업을 하려고 하니 차라리 적당히 하고, 다른 스펙 쌓는 게 나았을까 생각이 드네요 저의 성과가 어느 정도 가치가 있는지 솔직한 평가가 궁금합니다. 앱 개발에 너무 몰두하다 보니 다른 팀 프로젝트나 자격증이 부족하다고 느껴져서 만약 그렇게 큰 가치가 없다고 하면 부트캠프를 지원하거나 해서 팀 프로젝트를 쌓고, 가치가 있다고 하면 코테에 몰두하려고 합니다 정말 솔직한 말씀 부탁드립니다!
해결됨
(2026 최신!) 일주일만에 합격하는 정보처리기사 실기
함수와 재귀함수(v2) 38:23 return res; 구문은 의미가 없이 그냥 있는건가요?
해결됨
(2026 최신!) 일주일만에 합격하는 정보처리기사 실기
함수와 재귀함수(v2) 22:15 void printString(char *str){ printf("입력된 문자열: %s\n", str); } int main(){ char myString[] = "this is string"; printString(myString); return 0; } 위 구문에서 void 구문 중 char *str 부분에서 설명으로 myString을 가리키는 주소 값 중 1번째를 가리킨다고 하는데 t가 아니라 왜 this is string 배열 전체를 의미하는지 이해가 되지 않습니다.
미해결
코테의 바이블 [java]
섹션[6] 66.[출제유형] 거리측정, 최단거리 페이지 오타 방법 2) 큐에 거리 정보까지 함께 저장하는 방식 ✔ visited를 사용한 구현 코드 설명에 visited 코드 예시가 아니라 아래 설명되어있는 distance와 동일한 코드 예시로 되어있습니다. visited로 활용하는 코드로 변경 필요할 것 같습니다. 현재 노션도 이와 동일하게 되어있습니다..!
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AI 에이전트 개발 오리엔테이션
Mastering Information Security Governance for ServiceNow CIS-SPM Exam Success For professionals preparing for the CIS-SPM exam, mastering Information Security Governance (ISG) is critical for both exam success and practical career application. The CIS-SPM exam evaluates candidates on their understanding of governance frameworks, risk management strategies, regulatory compliance, and best practices for safeguarding enterprise information systems. Developing a strong foundation in these areas ensures that you are not only prepared for the exam but also capable of applying governance principles effectively in real-world scenarios. Understanding Information Security Governance Information Security Governance is the framework by which organizations direct, manage, and monitor information security to support their overall business objectives. Within the CIS-SPM exam, candidates must understand how governance aligns with corporate strategy, risk management, and compliance requirements. Governance goes beyond day-to-day security operations; it involves strategic alignment with organizational goals, efficient allocation of security resources, performance measurement using KPIs, and demonstrating value delivery to stakeholders. Exam questions frequently assess your ability to differentiate between governance and management and to interpret governance principles in practical situations. Key Frameworks and Standards in CIS-SPM A deep understanding of established frameworks is a cornerstone of CIS-SPM exam preparation. ISO/IEC 27001 and 27002 are essential standards defining the requirements for an Information Security Management System (ISMS) and outlining specific controls to manage risks effectively. The NIST Cybersecurity Framework (CSF) emphasizes core functions such as Identify, Protect, Detect, Respond, and Recover, which are often referenced in exam scenarios. Candidates should also be familiar with COBIT, which focuses on aligning IT governance with business objectives, and ITIL security management practices that integrate security into IT service management. A practical grasp of these frameworks allows candidates to confidently address scenario-based questions that test governance, policy creation, and compliance alignment. Governance Policies and Compliance Developing and enforcing security policies is a critical topic in the CIS-SPM exam. Policies form the foundation of governance and ensure consistency across organizational processes. Candidates should understand how to create, maintain, and implement acceptable use policies, data protection policies, and incident response procedures. Regulatory compliance knowledge, including GDPR, HIPAA, and ISO standards, is also essential, as exam scenarios often involve aligning policies with legal requirements. Additionally, understanding accountability and the distinction between executive responsibility and operational execution is frequently tested in CIS-SPM exam questions, particularly in scenarios involving audits or security incidents. Risk Management and Strategic Decision-Making Risk management is central to information security governance and a major focus of the CIS-SPM exam. Candidates are expected to identify threats, vulnerabilities, and potential impacts, evaluate risks using qualitative or quantitative methods, and recommend mitigation strategies. The exam often presents scenarios requiring judgment in prioritizing risks, allocating security resources, and communicating findings to senior management. A successful candidate demonstrates the ability to make strategic decisions grounded in governance principles, rather than simply applying technical solutions. Measuring and Reporting Security Effectiveness Effectively measuring and reporting on information security programs is another key area for CIS-SPM exam success. Candidates should understand how to utilize key performance indicators (KPIs) such as incident resolution times, audit compliance results, and the number of detected security incidents. Key risk indicators (KRIs) help identify potential vulnerabilities or regulatory exposures. The ability to interpret these metrics and use them to refine policies, controls, and security posture is frequently tested in exam questions. CIS-SPM emphasizes continuous improvement and governance iteration, requiring candidates to demonstrate analytical and strategic thinking. Effective ServiceNow CIS-SPM Exam Preparation and Practice Taking a CIS-SPM exam is a crucial step for exam success, as it helps candidates identify knowledge gaps, improve time management, and get familiar with scenario-based questions that test governance, risk management, and compliance skills. Practice exams allow you to apply theoretical concepts to real-world situations, such as evaluating policies for regulatory compliance or recommending risk mitigation strategies. By reviewing results and focusing on weak areas, candidates can refine their decision-making and strategic thinking. P2PExams offers high-quality CIS-SPM Practice Exams with detailed explanations and real-world case studies, helping learners build confidence, reinforce key concepts, and enter the exam fully prepared to succeed.
