COMPTIA SECURITY+ SY0-701 EXAM OBJECTIVES QUESTIONS & ANSWERS 2026-2027 | M… EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
CompTIA Security+ SY0-701
Exam Objectives Questions &
Answers 2026-2027 | Master
Certification Review
(Rationales)
Verified Answers Exam Ready With Rationales
100 QUESTIONS
DOCUMENT OVERVIEW
This document provides 100 CompTIA Security+ SY0-701 exam questions, each with its correct answer and
detailed rationale. It covers essential cybersecurity concepts, serving as a comprehensive study and review
tool for certification preparation. This resource directly aligns with mastering certification objectives
through focused learning and understanding.
CONTENTS
Cryptography Fundamentals Q1–Q21
Data Protection Techniques Q22–Q33
Key Management & Hardware Security Q34–Q38
Public Key Infrastructure (PKI) Q39–Q47
Zero Trust & Access Control Q48–Q59
Physical Security & Deception Q60–Q77
Security Controls & Operations Q78–Q100
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 100
Public key infrastructure (PKI)
CORRECT ANSWER
A system that manages the creation, distribution, and revocation of digital certificates.
RATIONALE
PKI provides the framework for verifying identities and securing communications through the lifecycle management of digital
certificates, encompassing their issuance, distribution, and revocation. This infrastructure underpins trust in digital interactions by
ensuring the authenticity and integrity of cryptographic keys.
Q2 QUESTION 2 OF 100
Public key
CORRECT ANSWER
A cryptographic key that is used for encryption and verifying digital signatures in asymmetric encryption.
RATIONALE
A public key is part of an asymmetric cryptographic system, enabling anyone to encrypt messages or verify signatures, but only the
corresponding private key can decrypt or create signatures. This asymmetry ensures secure communication and authentication
without needing to share a secret key.
Q3 QUESTION 3 OF 100
Private key
CORRECT ANSWER
A cryptographic key that is used for decryption and creating digital signatures in asymmetric encryption.
RATIONALE
The private key is uniquely paired with a public key in asymmetric cryptography and is kept secret by its owner to decrypt messages
encrypted with the corresponding public key and to generate digital signatures verifying authenticity. This principle underscores
asymmetric encryption's core function of secure communication and authentication through key pair management.
Q4 QUESTION 4 OF 100
Encryption
CORRECT ANSWER
The process of converting plaintext into ciphertext to protect data confidentiality.
Page 2
, RATIONALE
Encryption transforms readable data into an unreadable format, known as ciphertext, safeguarding information from unauthorized
access and ensuring confidentiality. This process is the core mechanism for protecting sensitive data in transit and at rest.
Q5 QUESTION 5 OF 100
Asymmetric encryption
CORRECT ANSWER
A cryptographic system that uses two different keys: a public key for encryption and a private key for decryption.
RATIONALE
Asymmetric encryption relies on a mathematically linked pair of keys, where the public key encrypts data, and only the
corresponding private key can decrypt it, enabling secure communication without prior key exchange. This public-key cryptography
principle underpins secure digital transactions and authentication.
Q6 QUESTION 6 OF 100
Symmetric encryption
CORRECT ANSWER
A cryptographic system that uses the same key for both encryption and decryption.
RATIONALE
Symmetric encryption, also known as secret-key cryptography, relies on a single shared secret key to transform plaintext into
ciphertext and back again, making key distribution the primary security challenge. This shared secret key ensures both
confidentiality and integrity through a reversible mathematical algorithm.
Q7 QUESTION 7 OF 100
Key exchange
CORRECT ANSWER
The process of securely sharing encryption keys between parties.
RATIONALE
Key exchange is the cryptographic process by which two parties establish a shared secret key over an insecure communication
channel. This shared secret can then be used for symmetric encryption to ensure confidentiality and integrity of subsequent
communications.
Q8 QUESTION 8 OF 100
Algorithms
CORRECT ANSWER
Mathematical functions used in encryption and decryption processes.
Page 3
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
CompTIA Security+ SY0-701
Exam Objectives Questions &
Answers 2026-2027 | Master
Certification Review
(Rationales)
Verified Answers Exam Ready With Rationales
100 QUESTIONS
DOCUMENT OVERVIEW
This document provides 100 CompTIA Security+ SY0-701 exam questions, each with its correct answer and
detailed rationale. It covers essential cybersecurity concepts, serving as a comprehensive study and review
tool for certification preparation. This resource directly aligns with mastering certification objectives
through focused learning and understanding.
CONTENTS
Cryptography Fundamentals Q1–Q21
Data Protection Techniques Q22–Q33
Key Management & Hardware Security Q34–Q38
Public Key Infrastructure (PKI) Q39–Q47
Zero Trust & Access Control Q48–Q59
Physical Security & Deception Q60–Q77
Security Controls & Operations Q78–Q100
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 100
Public key infrastructure (PKI)
CORRECT ANSWER
A system that manages the creation, distribution, and revocation of digital certificates.
RATIONALE
PKI provides the framework for verifying identities and securing communications through the lifecycle management of digital
certificates, encompassing their issuance, distribution, and revocation. This infrastructure underpins trust in digital interactions by
ensuring the authenticity and integrity of cryptographic keys.
Q2 QUESTION 2 OF 100
Public key
CORRECT ANSWER
A cryptographic key that is used for encryption and verifying digital signatures in asymmetric encryption.
RATIONALE
A public key is part of an asymmetric cryptographic system, enabling anyone to encrypt messages or verify signatures, but only the
corresponding private key can decrypt or create signatures. This asymmetry ensures secure communication and authentication
without needing to share a secret key.
Q3 QUESTION 3 OF 100
Private key
CORRECT ANSWER
A cryptographic key that is used for decryption and creating digital signatures in asymmetric encryption.
RATIONALE
The private key is uniquely paired with a public key in asymmetric cryptography and is kept secret by its owner to decrypt messages
encrypted with the corresponding public key and to generate digital signatures verifying authenticity. This principle underscores
asymmetric encryption's core function of secure communication and authentication through key pair management.
Q4 QUESTION 4 OF 100
Encryption
CORRECT ANSWER
The process of converting plaintext into ciphertext to protect data confidentiality.
Page 2
, RATIONALE
Encryption transforms readable data into an unreadable format, known as ciphertext, safeguarding information from unauthorized
access and ensuring confidentiality. This process is the core mechanism for protecting sensitive data in transit and at rest.
Q5 QUESTION 5 OF 100
Asymmetric encryption
CORRECT ANSWER
A cryptographic system that uses two different keys: a public key for encryption and a private key for decryption.
RATIONALE
Asymmetric encryption relies on a mathematically linked pair of keys, where the public key encrypts data, and only the
corresponding private key can decrypt it, enabling secure communication without prior key exchange. This public-key cryptography
principle underpins secure digital transactions and authentication.
Q6 QUESTION 6 OF 100
Symmetric encryption
CORRECT ANSWER
A cryptographic system that uses the same key for both encryption and decryption.
RATIONALE
Symmetric encryption, also known as secret-key cryptography, relies on a single shared secret key to transform plaintext into
ciphertext and back again, making key distribution the primary security challenge. This shared secret key ensures both
confidentiality and integrity through a reversible mathematical algorithm.
Q7 QUESTION 7 OF 100
Key exchange
CORRECT ANSWER
The process of securely sharing encryption keys between parties.
RATIONALE
Key exchange is the cryptographic process by which two parties establish a shared secret key over an insecure communication
channel. This shared secret can then be used for symmetric encryption to ensure confidentiality and integrity of subsequent
communications.
Q8 QUESTION 8 OF 100
Algorithms
CORRECT ANSWER
Mathematical functions used in encryption and decryption processes.
Page 3
