What is difference between baseband and broadband transmission
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Difference between bit rate and baud rate.
What are the different types of vpns?
What is utm firewall?
What is an arp?
explain how do we do authentication with message digest(md5)? (Usually md is used for finding tampering of data)
Why do we use virtual private network?
What is udp flood?
how secure is SAP applications?
What is remote access vpn?
WHAT IS DATA EXECUATION PREVANTION
How does ransomware work?
What is Firewall? I saw in one website Firewall is software and hardware and combination of software and hardware.It is used to protect user information or avoiding crackers.how it is?Whether it is hardware?If not then why the images are like that?(a wall ).Please help me by answering this question.Advance thanks.