Chapter 4
Where is a demarc located in relation to the structured cabling of an enterprise environment? a. at the entrance facility b. at the Intermediate Distribution Frame (IDF) c. between the MDF and the IDF d. in the Main Distribution Frame (MDF)
d. in the Main Distribution Frame (MDF)
Each type of cable has a prescribed bend radius , which is the radius of the maximum arc into which you can loop a cable without impairing data transmission. True False
True
What cable type comes in two different modes, single mode and multimode? a. Fiber optic b. Coaxial c. UTP d. STP
a. Fiber optic
If the use of a pre-existing Ethernet infrastructure is desired for a SAN, what Transport Layer protocol should be utilized? a. iSCSI b. PATA c. Fibre Channel d. SAS
a. iSCSI
What type of power converter changes the voltage of an AC current, such as when power over the main line from an electric company is changed before being delivered to a home? a. transformer b. inverter c. rectifier d. voltage regulator
a. transformer
Which of the following options is not a likely source of electromagnetic interference? a. microwaves b. fiber optic cables c. power lines d. motors
b. fiber optic cables
During termination of twisted pair cabling, what should be done to ensure minimal cross talk is introduced? a. Each pair should be twisted around another pair to reduce cross talk. b. No less than 1 inch of the cable should be exposed. c. No more than 1 inch of the cable should be exposed. d. Each pair should be stripped of insulation so that it doesn't get caught in the jack.
c. No more than 1 inch of the cable should be exposed.
Select the component of enterprise level structured cabling that serves as the location where an incoming network interface enters a building and connects with the building's backbone cabling: a. main distribution frame b. network interface device c. entrance facility d. intermediate distribution frame
c. entrance facility
In order to simplify console access to computers in a rack, what device is typically used to provide a central portal for all devices on the rack? a. terminal server b. AVR switch c. multi-monitor breakout cable d. KVM switch
d. KVM switch
What type of power flaw involves a fluctuation in voltage levels caused by other devices on the network or by EMI? a. brownout b. blackout c. surge d. noise
d. noise