chapter 3 - Network & Security Overview

IP address 126.110.98.212 is classified under class

• A

• B

• C

• D

Which network topology where the last node is connected to the first node?

• Bus

• Ring

• Star

• Tree

Which network topology where cable that is used to connect to all computers is terminated at both end?

• Bus

• Ring

• Star

• Tree

How many hosts can a class C network have?

• approximately 4.2 billion

• approximately 16 million

• 65534

• 254

Which type of firewall operates at session layer?

• Packet filter

• circuit level

• stateful

• proxy

Which network zone is used to give organization extra protection in detecting and mitigating security breaches before they reach the internal network.

• production zone

• controlled zone

• demilitarized zone

• secured zone

Switch support _____ .

• simplex

• half-duplex

• semi-duplex

• full duplex

Which of the following is the function of a layer 2-switch?

I. learn address

II. forward and filter packets within same network

III. forward packets to another network

IV. avoid broadcast loop

• I, II

• I, II, III

• II, III, IV

• I, II, IV

Which of the following is used to group network devices and nodes logically?

• switch

• router

• VLAN

• VPN

A good way to protect your password in a database is through ____.

• encryption

• digital signature

• message digest

• authentication