Consider the following statements on ‘firewall’

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ESE (IES) EE 2017 (Non Technical)
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Engineering aptitude

83

M: +2.00/-0.66

Consider the following statements on ‘firewall’ used in computing systems:
1. It controls and monitors the data traffic flow between inside and outside network.
2. It protects and secures the inside network from any outside network
3. It can be implemented in software or hardware or a combination of both
Which of the above statements are correct?

[ESE (IES) EE 2017 (Non Technical)]

A 1 and 2 only

B 1 and 3 only

C 2 and 3 only

D 1, 2 and 3