Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Computer Networks Network Security
Eavesdropping attack can be prevented by using__.
1
Firewall
2
Virtual Private Network (VPN)
3
Changing the credentials frequently
4
More than one of the above
5
None of the above