MCQOPTIONS
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MCQOPTIONS
This section includes 32 Mcqs, each offering curated multiple-choice questions to sharpen your Data Structures and Algorithms knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Morse Code is named after which scientist? |
| A. | Samuel F. B. Morse |
| B. | Karl Morse |
| C. | Judea Pearl |
| D. | Daniel C. Morse |
| Answer» B. Karl Morse | |
| 2. |
Poly alphabetic cipher harder to decipher than mono alphabetic cipher. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 3. |
Vigenere cipher is an example of ______________ |
| A. | mono-alphabetic cipher |
| B. | poly-alphabetic cipher |
| C. | transposition cipher |
| D. | additive cipher |
| Answer» C. transposition cipher | |
| 4. |
Which of the following ciphers are created by shuffling the letters of a word? |
| A. | substitution cipher |
| B. | transposition cipher |
| C. | vigenere cipher |
| D. | hill cipher |
| Answer» C. vigenere cipher | |
| 5. |
Which of the following is a type of substitution cipher? |
| A. | Mono alphabetic cipher |
| B. | transposition cipher |
| C. | transportation cipher |
| D. | transforming cipher |
| Answer» B. transposition cipher | |
| 6. |
In which of the following cipher the plain text and the ciphered text does not have same number of letters? |
| A. | keyword cipher |
| B. | vigenere cipher |
| C. | transposition cipher |
| D. | additive cipher |
| Answer» C. transposition cipher | |
| 7. |
Which of the following is not a type of mono alphabetic cipher? |
| A. | additive cipher |
| B. | multiplicative cipher |
| C. | afffine cipher |
| D. | hill cipher |
| Answer» E. | |
| 8. |
Which of the following is not a type of poly alphabetic cipher? |
| A. | Auto key cipher |
| B. | Hill cipher |
| C. | Playfair cipher |
| D. | Additive cipher |
| Answer» E. | |
| 9. |
What will be the plain text corresponding to cipher text 'PROTO' if vigenere cipher is used with keyword as 'HELLO'? |
| A. | SANFOUNDRY |
| B. | WORLD |
| C. | INDIA |
| D. | AMERICA |
| Answer» D. AMERICA | |
| 10. |
Which of the following is a type of traditional cipher? |
| A. | transportation cipher |
| B. | transposition cipher |
| C. | transforming cipher |
| D. | vigenere cipher |
| Answer» C. transforming cipher | |
| 11. |
Which word tells a word rate of Morse code's shorter code durations for common characters such as “e” and “t”.? |
| A. | PARIS |
| B. | CODEX |
| C. | PARCOD |
| D. | SPACE |
| Answer» B. CODEX | |
| 12. |
What is the basic unit of time measurement in Morse code transmission? |
| A. | Dot duration |
| B. | Dash Duration |
| C. | Numeric Duration |
| D. | Space Duration |
| Answer» B. Dash Duration | |
| 13. |
Vigenere cipher is harder to decipher than keyword cipher. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 14. |
The dash duration is how many times the dot duration? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 15. |
Which of the following correctly defines poly alphabetic cipher? |
| A. | a substitution based cipher which uses multiple substitution at different positions |
| B. | a substitution based cipher which uses fixed substitution over entire message |
| C. | a transposition based cipher which uses multiple substitution at different positions |
| D. | a transposition based cipher which uses fixed substitution over entire message |
| Answer» B. a substitution based cipher which uses fixed substitution over entire message | |
| 16. |
What is the length of the dot in Morse code? |
| A. | 1 Unit |
| B. | 7 Units |
| C. | 5 Units |
| D. | 3 Units |
| Answer» E. | |
| 17. |
What is the meaning of cipher in cryptography? |
| A. | an algorithm that performs encryption |
| B. | an algorithm that generates a secret code |
| C. | an algorithm that performs encryption or decryption |
| D. | a secret code |
| Answer» D. a secret code | |
| 18. |
Vigenere table consists of _________ |
| A. | 26 rows and 26 columns |
| B. | 26 rows and 1 column |
| C. | 1 row and 26 columns |
| D. | 27 rows and 27 columns |
| Answer» B. 26 rows and 1 column | |
| 19. |
In which of the following cipher the plain text and the ciphered text does not have a same number of letters? |
| A. | affine cipher |
| B. | vigenere cipher |
| C. | columnar cipher |
| D. | additive cipher |
| Answer» C. columnar cipher | |
| 20. |
Encryption in Vigenere cipher is done using _________ |
| A. | vigenere formula |
| B. | vigenere cycle |
| C. | vigenere square |
| D. | vigenere addition |
| Answer» D. vigenere addition | |
| 21. |
Which of the following is used as signal duration in Morse Code? |
| A. | Dash |
| B. | Forward Slash |
| C. | Apostrophe |
| D. | Ampersand |
| Answer» B. Forward Slash | |
| 22. |
Which of the following is a type of transposition cipher? |
| A. | Rail Fence cipher |
| B. | Hill cipher |
| C. | Rotor cipher |
| D. | One time pad |
| Answer» B. Hill cipher | |
| 23. |
Which letter of the English alphabet has the shortest code in Morse Code? |
| A. | A |
| B. | C |
| C. | B |
| D. | E |
| Answer» E. | |
| 24. |
The letters of a word are separated by a space of how many units? |
| A. | 1 Unit |
| B. | 2 Units |
| C. | 3 Units |
| D. | 4 Units |
| Answer» D. 4 Units | |
| 25. |
What is meant by the single dot in Morse code? |
| A. | A |
| B. | C |
| C. | B |
| D. | E |
| Answer» E. | |
| 26. |
Is Morse code speed measured in characters per minute (cpm)? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 27. |
Is Morse code speed measured in words per minute (wpm). |
| A. | True |
| B. | False |
| Answer» B. False | |
| 28. |
Who is the creator of Modern International Morse Code? |
| A. | Samuel F. B. Morse |
| B. | Karl Morse |
| C. | Alexander Morse |
| D. | Friedrich Clemens Gerke |
| Answer» E. | |
| 29. |
What is the name of special procedural signals that are used to indicate changes in communications protocol status? |
| A. | Prosigns |
| B. | Aldis |
| C. | BIT |
| D. | Asterisk |
| Answer» C. BIT | |
| 30. |
In Morse Code, each dot or dash within a character is followed by a period of signal absence. What is the name of that signal? |
| A. | Slash |
| B. | Space |
| C. | Ampersand |
| D. | Asterisk |
| Answer» C. Ampersand | |
| 31. |
Space signal is of how many unit? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 32. |
Which word offers a word rate that is typical of 5-letter code groups? |
| A. | PARIS |
| B. | CODEX |
| C. | PARCOD |
| D. | SPACE |
| Answer» C. PARCOD | |