CMIT 265 practice exam Networking+ Preparation Questions With Complete Solutions

What topology connects each network device to a central hub? correct answer: Star Topology What is a short circuit? correct answer: When electrical signals take a path other than the intended path. In twisted pair wiring, a short means that a signal sent on one wire might arrive on a different wire. CAUSES: worn wire jackets, crushed wires that touch, and pierced wires that touch metal. What is CROSSTALK? correct answer: Interference that is caused by signals within twisted pairs of wires. What is attenuation? correct answer: The loss of signal strencth from one end of a cable to the other caused by distance. What is a split pair condition? correct answer: A condition where a single wire in two different pairs is reversed at both ends. EX: instead of matching the green and green/white wires in pins 1 and 2, you swap the solid green wire with the solid brown wire. What security improvements are added by SNMP v3? correct answer: 1) Authentication for agents and managers 2) Encryption of SNMP information 3) Message integrity to ensure that data is not altered in transit Must Class B addresses on all network nodes have the same network address? correct answer: Yes. EX: Class B address