Quiz 3 - PROFE5 313 - Final

What does a public key certificate do?

• Proves a website is real and secure
• Blocks pop-up ads
• Stores passwords
• Provides search rankings

Answer explanation

A public key certificate ensures the site is verified and secure.

A public key is mainly used to:

• Encrypt or lock data
• Open browser tabs
• Change passwords
• Speed up loading time

Answer explanation

A public key encrypts data for secure transmission.

What does the green lock in the browser address bar indicate?

• That the site is trendy
• That the site has a valid certificate
• That the site has no content
• That the site is under construction

Answer explanation

The green lock means the site has a valid SSL/TLS certificate.

PKI stands for:

• Private Key Initiative
• Public Knowledge Info
• Public Key Infrastructure
• Portal Key Info

Answer explanation

PKI stands for Public Key Infrastructure.

Who issues public key certificates?

• Certificate Authorities
• Google
• Social media
• Antivirus companies

Answer explanation

CAs like DigiCert issue public key certificates.

A Certificate Authority is like:

• A delivery driver
• A librarian
• A school principal
• A bus driver

Answer explanation

CAs are like principals who verify and issue certificates.

What happens after a certificate is issued?

• The browser ignores it
• The browser checks it
• It expires immediately
• It blocks the site

Answer explanation

The browser checks the certificate before loading the site.

Which of these is a real-world example of a secure site?

• http://bdo.com.ph
• https://www.bdo.com.ph
• ftp://bdo.com.ph
• www.bdo.com

Answer explanation

The HTTPS in the URL shows that the site uses a secure certificate.

Which of the following is a real CA?

• DigiCert
• Facebook
• Microsoft Word
• Wikipedia

Answer explanation

DigiCert is a well-known Certificate Authority.

Why is PKI important?

• It builds secure connections
• It runs websites faster
• It increases font size
• It sends emails faster

Answer explanation

PKI enables secure connections like HTTPS.