Channel Talk interviewers will directly analyze the difference between failing and passing answers to the same question and help you prepare for actual follow-up questions.
257 learners
Level Basic
Course period Unlimited
Reviews from Early Learners
5.0
황규운
This is seriously so helpful ㅜㅜ
5.0
또르빗슈
It’s a course designed to help you prepare for interviews, but it’s also very useful for people who have been assigned to a new team. You can quickly build a solid foundation focusing on terms frequently used in practical work. Highly recommended.
5.0
모깅
Compact Network Interview Prep
A perfect model answer evaluated by the interviewer
The same question: The decisive difference between a failing answer and a passing answer
Full set of actual interview questions and follow-up question pedigrees for Na-Ka-Ra-Ku-Bae-Dang-To / Unicorn companies (over 100 questions)
Answering skills that make you say "I nailed the interview" instead of "I blew the interview"
I am Jayon, currently working as a backend engineer and interviewer at Channel Talk, after completing the Woowa Tech Course and working as a backend engineer at various companies. I wasn't someone who was good at interviews from the start either. In fact, I ranked near the bottom in the Woowa Tech Course mock interviews and even had to have a separate private meeting with the CEO.
The working principle of DNS? I knew it. The concept of JWT? Of course, I had it organized. But everything changed once I sat down in the interview room.
"Explain the structure of JWT and why access tokens and refresh tokens are separated." Up to this point, it was fine. I said everything exactly as I had prepared. But the moment the interviewer picked out one of my answers and asked, "Then how do you respond when a JWT is stolen, and how do you determine if it has been stolen?" my mind went blank. I had definitely seen it somewhere. I had even organized it. But I just didn't know what to say right then and there.
When I searched on my phone after the interview and realized, "Ah, it was this..." that feeling of emptiness... I'm sure many of you can relate.
From then on, I started recording and reviewing my interviews. I created a "wrong answer note" and compared my previous answers with my current ones for the same questions. As I accumulated hundreds of questions and answers, patterns began to emerge. I started to see which answers convinced the interviewers and which ones invited unnecessary follow-up questions.
It was only after going through this trial and error hundreds of times that I realized: knowing the theory and speaking in an interview are completely different skills. That's why I decided to create a lecture focused solely on "how to answer the questions."
This is not a theoretical summary lecture. Lectures that summarize topics like "What is HTTP" are already abundant on blogs. This lecture teaches you, "If an interviewer asks this, answer like this." Each lecture corresponds to a single interview question, breaking down step-by-step how you should answer that specific question.
We provide a comparative analysis of three levels of answers—Bronze, Silver, and Gold—for the same question.Bronze is a 50-point answer out of 100, Silver is an 80-point answer, and Gold is a 100-point answer. We show you specifically why the outcome can differ between passing and failing, even when using the same keywords.
The content is based on actual interview questions from major corporations and unicorn startups. It includes not only the main questions but also the follow-up questions that actually follow them. From the main question to the follow-up and the follow-up to that, the lectures are structured exactly the way questions flow in a real interview.
Frequently asked questions are provided as an appendix PDF and are continuously updated.Frequently asked questions not covered in the lecture are provided in a separate PDF, and we plan to keep adding more in the future. Once purchased, you can continue to receive all updated appendices.
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Those who can answer the initial question but find their mind going blank when follow-up questions start.
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Those who want to know the interviewer's inner thoughts, like "What would they think if they heard this answer?"
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Those who want to get hired by IT service companies like Kakao, Naver, LINE, and Toss
Network & Web basic theory is assumed to be known for this class. The effectiveness of the lecture will be maximized only if you have encountered concepts such as HTTP and REST API at least once.
If there is any part you don't understand while studying, please feel free to ask questions right away by using the Q&A board😊
If you meet the wrong doctor, you may face death because your illness cannot be cured at that moment. However, death ends with the pain of that moment. But if you meet the wrong teacher and receive a poor education, you will suffer throughout your entire life.
Due to poor education, you may end up at a company you don't want to work for, receive a lower salary than expected, and suffer for the rest of your life as a result. Not only that, but the poor education you received can even be passed down to your children.
I believe that education can change a person's life very positively, but on the other hand, it can also completely ruin a person's life. That is why I believe education carries such a heavy responsibility.
Therefore, please check who the educator is, what kind of person they are, and what path they have taken, and make a careful judgment.
Hello!
I am Jayon, a 5th-year developer working as a backend engineer at Channel Corp.
I completed the Woowa Tech Course 3rd Backend program and started my career at a small SI company. My salary was at the minimum level. To escape that situation, I spent a tremendous amount of time preparing for coding tests and interviews. As a result, after passing through Chai Corporation (PortOne), I am currently earning several times my initial salary while managing Channel Talk's core systems, which handle billions of records.
Going through this process, I realized that it is incredibly difficult to find the right direction when preparing for a job alone. That is why I served as a backend mentor at F-Lab, JSCODE, and Fast Campus, and also took on the role of a reviewer for the 5th Woowa Tech Course. Through mentoring, I have helped students successfully land jobs at major tech companies (Naver, Kakao, Line, Coupang, Baemin, Danggeun, Toss), unicorn startups, and large corporations, and the know-how accumulated during that process is fully captured in this course.
Just as I received a lot of help when I was going through difficult and challenging times, I wanted to become someone who could help many others as well. I felt most proud and happy when the value I created through development had a positive impact on other people.
I also run a technical blog, steady-coding, so if you're curious about what kind of developer I am, please feel free to stop by!
Thank you!
➡ CS Interview Preparation directly from a Channel Talk Interviewer
Who is this course right for?
Those who want to get hired by IT service companies like Kakao, Naver, LINE, and Toss
For those who want to cram for Network & Web in under 3 hours right before an interview.
Those who are curious about frequently asked interview questions and the scoring criteria.
Those who want to know the inner thoughts of an interviewer, such as "What would they think if they heard this answer?"
Those who have never done a CS interview before and have no idea what kind of questions will be asked.
Those who can answer the initial question but find their mind going blank when follow-up questions are asked.
Inflearn Verified
Career Verified
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Learners
141
Reviews
15
Answers
5.0
Rating
5
Courses
[Contact]
[Career]
Present) Channel Corporation - Lv 4. Backend Engineer
Formerly, Chai Corporation (PortOne) - Backend Engineer
[Education]
Current) F-Lab Backend Mentor
Current) JSCODE Backend Mentor
Former) Woowa Tech Course 5th Cohort Backend Reviewer & 3rd Cohort Backend Graduate
Co-instructor
All
49 lectures ∙ (3hr 29min)
Course Materials:
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20 reviews
5.0
20 reviews
Reviews 35
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Average Rating 5.0
5
Compact Network Interview Prep
Hello, Moging! Thank you for leaving such a great course review😊 We’ll continue working to provide even better courses!
Reviews 2
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Average Rating 5.0
5
This is seriously so helpful ㅜㅜ
Hello, Hwang Gyu-un! Thank you for leaving such a wonderful course review 😊 We’ll continue working hard to provide even better courses in the future!
Reviews 9
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Average Rating 5.0
Edited
5
It’s a course designed to help you prepare for interviews, but it’s also very useful for people who have been assigned to a new team. You can quickly build a solid foundation focusing on terms frequently used in practical work. Highly recommended.
Hello, Torbitsu! Thank you for leaving such a great course review 😊 We’ll continue to repay you with even better courses!
Reviews 112
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Average Rating 4.5
5
I realized that this is how I should prepare for network interviews. Since you also covered interview questions based on experience, I feel confident that I can prepare for technical interviews. Additionally, it made me think that if I become an interviewer someday, I could evaluate candidates in this way as well.
Hello, Burce Han! Thank you for completing the course and leaving such a great review 😊 I’ll continue working hard to provide even better courses in the future!
Reviews 1
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Average Rating 5.0
5
When studying Network and Web CS, I felt like I understood the concepts, but it was difficult to structure my answers immediately when asked during an actual interview. I have been continuously preparing for interviews recently, and this lecture was very helpful because it focused on how to actually answer in an interview rather than just summarizing simple concepts. In particular, I liked the method of comparing poor answers with good ones, and it was useful for real-world preparation as it also covered follow-up questions. Also, I am reinforcing my interview preparation by following the way Jayon structured the overall lecture and applying it to other technology stacks as well. Thank you always!
Hello, Sangyeon Min! Thank you for leaving such a great review😊 I will repay your support with even better lectures in the future!
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