MCQs

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What is the primary goal of authentication in networking?
a. Encrypting data at rest
b. Verifying user identity
c. Configuring network topology
d. Monitoring network traffic
Answer: b. Verifying user identityexamradar+1
Which of these is considered a factor in Multi-Factor Authentication (MFA)?
a. Something you know
b. Something you are
c. Something you have
d. All of the above
Answer: d. All of the abovelinkedin+1
Which protocol uses tickets for secure network authentication?
a. LDAP
b. Kerberos
c. RADIUS
d. OAuth
Answer: b. Kerberostutorialspoint+2
Biometric authentication verifies identity using:
a. IP address
b. Physical traits
c. Password
d. Security questions
Answer: b. Physical traitsloginradius+2
Which method eliminates the use of traditional passwords?
a. Passwordless authentication
b. Captcha
c. Two-step authentication
d. Replay attack
Answer: a. Passwordless authenticationemudhra+2
What is the function of RADIUS protocol?
a. Encrypt files
b. Centralize authentication and authorization
c. Detect malware
d. Segment networks
Answer: b. Centralize authentication and authorizationnilesecure+2
What does SSO stand for in networking?
a. Single Secure Operation
b. Secure Switch Option
c. Single Sign-On
d. Shared Security Organization
Answer: c. Single Sign-Onlinkedin+1
Which protocol is commonly used for authenticating Wi-Fi access?
a. SNMP
b. EAP
c. FTP
d. POP3
Answer: b. EAPnilesecure+1
Which authentication method assesses contextual factors such as device or location?
a. Dictionary attack
b. Adaptive authentication
c. Static token authentication
d. Plaintext login
Answer: b. Adaptive authenticationemudhra+2
LDAP is primarily used for:
a. Encryption
b. Directory and authentication services
c. File transfer
d. Packet inspection
Answer: b. Directory and authentication servicestrustbuilder+3
Which authentication type is most vulnerable to replay attacks if not properly secured?
a. Token-based
b. Password-based
c. Kerberos
d. Biometric
Answer: b. Password-basedloginradius+1
What combination is NOT a valid factor for MFA?
a. Password and OTP
b. Password and username
c. Biometrics and security token
d. Smartcard and fingerprint
Answer: b. Password and usernamestrongdm+1
Which method uses a ‘magic link’ sent via email for login?
a. Biometric authentication
b. Passwordless authentication
c. Token ring authentication
d. Role-based authentication
Answer: b. Passwordless authenticationlinkedin+1
Which protocol is designed to prevent the sharing of login credentials between users?
a. Kerberos
b. SAML
c. Telnet
d. HTTP
Answer: a. Kerberosgeeksforgeeks+2
What is the main advantage of biometric authentication?
a. Requires no hardware
b. Difficult to steal or replicate
c. Relies on shared secrets
d. Allows anonymous access
Answer: b. Difficult to steal or replicateigmguru+2
Single Sign-On (SSO) offers which benefit?
a. One set of credentials for multiple services
b. Different passwords per service
c. Decentralizes access management
d. Increases network latency
Answer: a. One set of credentials for multiple servicesloginradius+1
SAML is used primarily for:
a. Encrypting files
b. Single Sign-On (SSO) in web applications
c. Database queries
d. Packet sniffing
Answer: b. Single Sign-On (SSO) in web applicationsokta+2
Which of these is NOT an example of physical authentication?
a. Password
b. Fingerprint
c. Retinal scan
d. Facial recognition
Answer: a. Passwordigmguru+2
The purpose of Kerberos is to:
a. Create encryption keys
b. Provide secure authentication using tickets
c. Scan for viruses
d. Manage network policies
Answer: b. Provide secure authentication using ticketstutorialspoint+2
What protocol is preferred for centralized Wi-Fi authentication in enterprises?
a. SMTP
b. RADIUS
c. HTTP
d. ICMP
Answer: b. RADIUStrustbuilder+2
Which protocol allows for federated identity across different domains?
a. DNS
b. SAML
c. FTP
d. POP3
Answer: b. SAMLnilesecure+2
What is a passkey?
a. Hardware that generates encryption keys
b. A credential that replaces passwords for authentication
c. An unencrypted password
d. Server authentication software
Answer: b. A credential that replaces passwords for authenticationstrongdm+1
In 2025, which method is considered the default secure authentication for enterprises?
a. Password-based login
b. Passwordless authentication
c. Static PIN authentication
d. Clear text authentication
Answer: b. Passwordless authenticationemudhra+1
Which protocol is often paired with LDAP for user authentication in enterprises?
a. SSH
b. Kerberos
c. SNMP
d. SMTP
Answer: b. Kerberosokta+2
What does MFA add to the authentication process?
a. Encryption
b. Multiple types of credentials
c. One-time passwords only
d. Only biometrics
Answer: b. Multiple types of credentialslinkedin+2
OAuth 2.0 is best described as:
a. File transfer protocol
b. Authorization framework for delegating access
c. Old authentication protocol
d. Secure router protocol
Answer: b. Authorization framework for delegating accessokta+1
A smart card used in authentication represents which factor?
a. Something you have
b. Something you are
c. Something you know
d. Something you see
Answer: a. Something you haveigmguru+2
Which authentication method is most resistant to phishing attacks?
a. Static password
b. Passwordless authentication with biometrics
c. Security question
d. Username-based authentication
Answer: b. Passwordless authentication with biometricsemudhra+2
Which service supports authentication, authorization, and accounting (AAA)?
a. FTP
b. RADIUS
c. SMTP
d. ARP
Answer: b. RADIUStrustbuilder+1
Passkeys are compliant with which industry standard?
a. FIDO2
b. DES
c. FTP
d. IPSec
Answer: a. FIDO2strongdm+2
Adaptive authentication responds to:
a. User’s metabolic rate
b. Contextual risks and login behavior
c. Device serial number only
d. Packet size
Answer: b. Contextual risks and login behaviorloginradius+2
Which protocol uses ‘tickets’ for authenticating service requests?
a. RADIUS
b. Kerberos
c. SSL
d. OAuth 2.0
Answer: b. Kerberosgeeksforgeeks+1
What is NOT a characteristic of passwordless authentication?
a. Eliminates need for passwords
b. Uses biometrics or device authentication
c. Always requires SMS OTP
d. Reduces phishing risk
Answer: c. Always requires SMS OTPemudhra+1
LDAP directories are commonly used for:
a. Software licensing
b. Centralizing authentication within enterprises
c. Email scheduling
d. Packet inspection
Answer: b. Centralizing authentication within enterprisestutorialspoint+2
Which authentication factor relates to “something you know”?
a. Password
b. Badge
c. Face scan
d. Retinal scan
Answer: a. Passwordigmguru+2
Which technology is becoming standard for browser-based authentication in 2025?
a. Static password
b. Passkey
c. Paper token
d. Color captcha
Answer: b. Passkeystrongdm+1
EAP is extensible in that:
a. It supports different authentication methods
b. It provides free storage space
c. It compresses network data
d. It manages DNS records
Answer: a. It supports different authentication methodsnilesecure+1
Single Sign-On (SSO) minimizes:
a. Repeated logins for different applications
b. Need for encryption
c. Firewall configurations
d. VLAN setup
Answer: a. Repeated logins for different applicationslinkedin+1
Which authentication method uses behavioral patterns for verification?
a. Static password
b. Adaptive authentication
c. Token authentication
d. Email-only login
Answer: b. Adaptive authenticationloginradius+2
The acronym AAA in network authentication stands for:
a. Authentication, Authorization, and Accounting
b. Active Address Administration
c. Automated Access Application
d. Assigned Administrative Account
Answer: a. Authentication, Authorization, and Accountingtrustbuilder+1
What is a common risk linked with password-only authentication?
a. Easy interoperability
b. Phishing and credential theft
c. Multi-device support
d. Instant revocation
Answer: b. Phishing and credential theftlinkedin+2
FIDO2 enables:
a. Multi-step packet routing
b. Passwordless strong authentication
c. Email encryption
d. Address translation
Answer: b. Passwordless strong authenticationstrongdm+2
Which method authenticates both client and server identities?
a. One-way authentication
b. Mutual authentication
c. Static identifier mapping
d. Token obfuscation
Answer: b. Mutual authenticationloginradius+1
A time-based one-time password (TOTP) is an example of:
a. Static authentication
b. Dynamic token-based authentication
c. Manual authentication
d. Access control list
Answer: b. Dynamic token-based authenticationstrongdm+1
The use of digital certificates for authentication suggests which method?
a. Certificate-based authentication
b. Knowledge-based authentication
c. MAC address filtering
d. Social login
Answer: a. Certificate-based authenticationloginradius+1
What is the core benefit of using SSO in corporate environments?
a. Reduces password reuse across services
b. Opens all network ports
c. Enhances MAC address filtering
d. Encrypts every data packet
Answer: a. Reduces password reuse across serviceslinkedin+1
Which form of authentication uses a challenge-response technique?
a. CAPTCHA
b. Kerberos protocol
c. Security badge
d. VLAN assignment
Answer: b. Kerberos protocolgeeksforgeeks+1
The rise of passwordless authentication in enterprise is attributed to:
a. Weakness of passwords
b. Mandates for faster login
c. Need for improved phishing resistance
d. All of the above
Answer: d. All of the aboveemudhra+1
OAuth 2.0 provides:
a. Authentication with local passwords
b. Delegated access using tokens
c. Biometric-only authentication
d. Simple key exchange
Answer: b. Delegated access using tokensokta+1
The least secure authentication method is typically:
a. Retinal pattern
b. Fingerprint
c. Password
d. Key card
Answer: c. Passwordsanfoundry+2

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