Chapter 4 Quiz

1. A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?

• presentation
• network
• physical
• data link

2. What type of cable is used to connect a workstation serial port to a Cisco router console port?

• crossover
• rollover
• straight-through
• coaxial

3. Why are two strands of fiber used for a single fiber optic connection?

• the two strands allow the data to travel for longer distances without degrading
• they prevent crosstalk from causing interference on the connection
• they increase the speed at which the data can travel
• they allow for full-duplex connectivity

4. Which procedure is used to reduce the effect of crosstalk in copper cables?

• requiring proper grounding connections
• twisting opposing circuit wire pairs together
• wrapping the bundle of wires with metallic shielding
• designing a cable infrastructure to avoid crosstalk interferences
• avoiding sharp bends during installation

5. What is one advantage of using fiber optic cabling rather than copper cabling?

• it is usually cheaper than copper cabling
• it is able to be installed around sharp bends
• it is easier to teminate and install than copper cabling
• it is able to carry signals much farther than copper cabling

6. A network administrator is designing a new network infrastructure that includes both wired and wireless connectivity. Under which situation would a wireless connection be recommended?

• the end-user device only has a Ethernet NIC
• the end-user device requires a dedicated connection because
• the end-user device needs mobility when connecting to the network
• the end-user device area has a high concentration of RFI

7. Which type of UTP cable is used to connect a PC to a switch port?

• console
• rollover
• crossover
• straight-through

8. What is the definition of bandwidth?

• the speed of bits across the media over a given period of time
• the speed at which bits travel on the network
• the amount of data that can flow from one place to another in a given amount of time
• the measure of usable data transferred over a given period of time

9. Which statement correctly describes frame encoding?

• it uses the characteristic of one wave to modify another wave
• it transmits data signals along with a clock signal which occurs at evenly spaced time durations
• it generated the electrical, optical, or wireless signals that represent the binsay numbers of the frame
• it converts bits into a predefined code in order to provide a predictable pattern to help distinguish data bits from control bits

10. What is a characteristic of UTP cabling?

• cancellation
• cladding
• immunity to electrical hazards
• woven copper braid or metallic foil