Question
A Â ............ Â protects a computer from
unauthorized access, by blocking all unnecessary network ports, which prevents a network program from communicating with another computer.Solution
A firewall is a network security system, either hardware- or software-based, that uses rules to control incoming and outgoing network traffic. A firewall acts as a barrier between a trusted network and an untrusted network. A firewall controls access to the resources of a network through a positive control model. This means that the only traffic allowed onto the network is defined in the firewall policy; all other traffic is denied.
Read the directions carefully and answer the following question.
Seven persons A, B, C, D, E, F and G are sitting in the straight horizontal li...
Eight persons, R, S, T, U, V, W, X and Y, sit around a square table and faces towards the centre of the table. Four of them sit at the corner of the tab...
Six persons J, K, L, M, N, and O are sitting in a straight row facing north direction but not necessarily in the same order. Two persons sit between L a...
Statements:
B ≥ L = C; N ≤ L < O; Q ≥ N < R
Conclusions:
I. B > N
II. N = B
Six girls G, N, O, V, X and Z are sitting around a circular table, facing the centre. Z is sitting third to the left of X. V is sitting to the immediate...
Four among the following five are alike in a certain way and hence form a group. which of the following does not belong to the group?
Who among the following sits at extreme left end of the row?
Which of the following is true?
Five people are standing in a line facing north R, L, P, J and C, not necessarily in this order. R is standing at one of the extreme ends. Two people ar...
Who amongst the following likes Indore?
