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Redis Certified Developer - Exam Practice Tests
Redis Certified Developer - Exam Practice Tests
Redis Certified Developer - Exam Practice Tests
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Redis Certified Developer - Exam Practice Tests

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About this ebook

This book contains two original and high-quality practice tests of 80 questions each - with answers and explanations - to help you pass the Redis Certified Developer exam.

* Just like the real exam, each practice test has 80 questions, for 90 minutes, with a 72% (500/700) passing score.

* Same domains as in the actual exam: General, Keys, Data Structures, Data Modeling, Debugging, Performance, Clustering.

* All questions closely emulate most from the actual exam, without duplicating them.

* Unlike the real exam, you'll know right away what questions you missed, and what the correct answers are.

* Detailed explanations with external references for any possible choice, in each practice test question.

* Just like the actual exam, all questions have four choices, and most are single-select.

 

Same e-book as LIVE practice tests on Udemy: "Become a Redis Certified Developer: Practice Exams".

LanguageEnglish
PublisherCristian Scutaru
Release dateOct 4, 2024
ISBN9798227239471
Redis Certified Developer - Exam Practice Tests

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    Book preview

    Redis Certified Developer - Exam Practice Tests - Cristian Scutaru

    About this Book

    Who this course is for

    People preparing for the Redis Certified Developer exam.

    Developers willing to acquire a certification in most popular key-value store.

    Those looking to pass with minimal risk the $120 Redis certification exam.

    This is not an introduction to Redis, as you should already have some prior basic knowledge on the product. Follow the previous link and use also the Redis recommended materials for this exam.

    The live interactive version of this e-book has been implemented on Udemy as a course, with the Become a Redis Certified Developer: Practice Exams title.

    This book contains two original and high-quality practice tests of 80 questions each, to help you become a Redis Certified Developer. You must pass a required proctored exam, maintained by Redis University, a department of Redis Labs.

    All questions are closely emulated from those currently found in the actual exam, so you'll not waste time on anything else.

    Unlike the real exam, you'll know right away what questions you missed, and what the correct answers are.

    Detailed explanations with external references for any possible choice, in each practice test question.

    Specifics of the real exam:

    80 questions

    90 minutes time limit

    72% passing score (500/700, max 22 questions wrong)

    $120 US per exam trial

    4 choices per question: most are single-choice, a few with multiple-selections.

    Domains or categories: General, Keys, Data Structures, Data Modeling, Debugging, Performance, Clustering. The large majority of questions test your knowledge on Data Structures and Data Modeling, through Redis commands.

    How you should use these tests

    Try first practice test. And do not worry about any time limit or if you fail. You are expected to fail, this is how you learn...

    Stop the exam anytime, if you're not patient enough to go over all 80 questions.

    The passing score is at 72%. Once you are done, go to the Answers and Explanations section for your test, and check both the right and wrong choices for each individual question (remember these!).

    Read the detailed Explanation for each question. This is something else you don't have at the actual exam...

    Repeat with the second practice test. Don't skip it, as both these tests together cover most  types of actual exam questions.

    Repeat these tests again and again, until you score at least 90% on each. And then go for the real deal. Good luck!

    Practice Test 1

    Question 1:

    Which features are included in all Redis editions? (check all that apply)

    Question 2:

    Which data is directly changed by the execution of the following command? (select one)

    SET mykey myvalue

    Question 3:

    Based on its computational complexity, which is the most performant algorithm? (select one)

    Question 4:

    How do you interpret the following CLI command: (select one)

    $ redis-cli --raw incr mycounter

    Question 5:

    What configuration technique allows you to hide Redis commands from the CLI tools? (select one)

    Question 6:

    How do you check if a key exists, in the most efficient way? (select one)

    Question 7:

    What is the final value of a? (select one)

    INCR a

    INCR A

    DECR a

    Question 8:

    You execute an INCR command on a non-existent key.

    What will INCR return? (select one)

    Question 9:

    Rename a key, but only if it does not already exist: (select one)

    RENAME NX key newkey

    RENAMENX key newkey

    RENAME key newkey

    MOVE key newkey

    Question 10:

    What are the Redis modules? (select one)

    Question 11:

    What will be the value of k3? (select one)

    SET k1 1000

    SET k2 1011

    BITOP AND k3 k1 k2

    GET k3

    Question 12:

    What is NOT true about the GETSET command? (select one)

    Question 13:

    If a key is renamed with RENAME: (select one)

    Question 14:

    What kind of values return check commands like EXISTS or SISMEMBER? (select one)

    Question 15:

    Which AOF journal approach is the most durable, but least performant? (select one)

    Question 16:

    Which command has a logarithmic complexity? (select one)

    Question 17:

    Which BITFIELD OVERFLOW option sets the value to either the minimum or maximum integer value, depending on the underflow or overflow status? (select one)

    Question 18:

    What is a Bloom Filter? (check all that apply)

    Question 19:

    Which of the following multi-key operations are still allowed in a Redis Cluster? (select one)

    Question 20:

    Which of the following operations does NOT end up with an error? (select one)

    Question 21:

    You call SADD several times in a row to add members to a set.

    What's wrong with this approach? (select one)

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