MCQ on digital signature

What is a digital signature?

• A handwritten signature on a digital document

• A unique identifier for a digital file

• An encryption method used to protect data

• A cryptographic technique to verify the authenticity and integrity of a digital document

In a digital signature system, which key is shared publicly?

• Public key

• Private key

• Session key

• Master key

In a Kerberos authentication system, what is the primary function of the Key Distribution Center (KDC)?

• To store user passwords

• To distribute encryption keys

• To manage network resources

• To handle email communications

What is the purpose of a Kerberos realm?

• To identify a specific network or domain

• To create a virtual reality environment for users

• To manage file permissions

• To store user credentials

In a Kerberos authentication process, what does a TGT (Ticket Granting Ticket) grant access to?

• Network resources

• User's personal files

• Internet browsing

• System settings

Which of the following is NOT a component of the Kerberos authentication protocol?

• Authentication Server (AS)

• Ticket Granting Server (TGS)

• Domain Controller (DC)

• Client

What is the primary purpose of an X.509 certificate?

• To store private keys

• To verify the integrity of a digital document

• To establish a secure connection between two parties

• To bind a public key to an individual or entity

In the context of X.509 certificates, what does the Common Name (CN) field typically represent?

• The certificate issuer's name

• The certificate's serial number

• The subject's name or entity's name

• The certificate's expiration date

What is the purpose of the X.509 certificate's "Key Usage" extension?

• To specify the certificate's validity period

• To indicate the certificate's public key

• To define the cryptographic algorithms used in the certificate

• To specify how the certificate's key can be used

In a certificate chain, what is the role of the Root Certificate Authority (Root CA)?

• To issue end-user certificates

• To sign intermediate certificates

• To provide timestamping services

• To issue certificates for internal use only