Network+ Study Guide

2017-07-07 02:10:07

1.	Which piece of software allows the computer’s operating system to access the NIC hardware? NIC driver Operating system driver System driver Protocol driver
2.	Which component of a NIC can store the settings like IRQ, I/O address, and DMA address? CPU Software driver ISA interface EEPROM
3.	Which cable type’s primary use is 100BaseT networks? UTP Twinax Fiber-optic Coax
4.	You are running UTP cable in an Ethernet network from a workstation to a hub. Which of the following items is/are included in the total length measurement of the cable segment (as needed in determining the longest segment length)? (Choose all that apply.) Workstation patch cable Main cable run Hub internal network Hub patch cable
5.	If you were going to make a 10BaseT patch cable, which tool would you use? Screwdriver Punchdown tool Wire crimper Tone generator
6.	SCSI connections can use which of the following connectors? (Choose all that apply.) BNC DB-25 Centronics-50 RJ-11 IBM Data Connector
7.	Depending on the Windows client operating system version, which command can you use to find out what is installed on a system? netstat MSD Ping utility All of the above
8.	Which network connectivity device is specifically designed to extend the maximum reach of a network segment? Bridge Router Repeater Brouter
9.	A bridge can increase network efficiency by _____________________. Copying packets of data sent to storage and resending them as requested without rereading the needed data Learning and storing the MAC address for each NIC on each side of the bridge and then, based on this information, forwarding packets only to the appropriate segment Defining traffic order by using Quality of Service (QoS) All of the above
10.	What is the result of updating an old NIC driver on a system? It can correct bugs. It can be a good way to look like you are doing useful work. It can act as a protocol converter. All of the above.
11.	EEPROM is short for ________________________________________. Electronically erasable programmable read-only memory Electrically erasable programmable read-only memory Electronically erasable periodical only memory Electrically erasable powered read-only memory
12.	Plug and Play expansion cards sometimes have problems working correctly with ___________________ expansion cards. PCI Token Ring Legacy ISA EISA
13.	A brouter combines which functions? (Choose all that apply.) Router Bridge Gateway Repeater
14.	The 10Base2 implementation of Ethernet, for the most part, uses which type of connector? RJ-11 BNC RJ-45 All of the above
15.	You are a consultant. You have been asked to find out where a particular “mystery jack” originates and what path the cable takes to get there. Which network installation tool would you most likely use? Wire crimper Punchdown tool Media tester Tone generator/tone locator
16.	You are installing an Ethernet network and have two workstations located 150 meters apart. You are on an extremely limited budget. Which type of network cable would be the best choice to run between the two workstations? UTP STP Coax Fiber-optic
17.	Which network component “shares out” a printer so that printing services can be provided to the entire network? Print server Print facilitator PCONSOLE.EXE Print manager
18.	Which of the following power conditions occurs when the voltage level increases quickly and falls just as quickly? Surge Spike Brownout Blackout
19.	Which power condition occurs when the voltage level increases quickly and remains at the high level for an extended period of time (several seconds)? Surge Spike Brownout Blackout
20.	Which power condition occurs when the voltage level drops below 120 volts and stays below for an extended period of time? Surge Spike Brownout Blackout

Answers

1.	A. The NIC driver is a software component that an operating system uses to interface with the NIC hardware.
2.	D. The EEPROM is the part of some (but not all) NICs that can store card resource settings that are made or changed with configuration software.
3.	A. The “T” in 100BaseT stands for twisted-pair (short for unshielded twisted-pair, or UTP). Although 100-Megabit Ethernet can run over fiber-optic, 100BaseT runs only over UTP.
4.	A, B, D. The total length of the segment is measured from the hub port to the workstation NIC interface. So, the workstation patch cable, the main cable run (from wall port to cabling closet), and the hub patch cable (from hub to main cable run) are all considered part of this distance measurement. For a 10BaseT Ethernet network, this total distance cannot be longer than 100 meters.
5.	C. A 10BaseT patch cable is a piece of cable with an RJ-45 connector on each end. These connectors must be crimped, and the only tool that can do that is a wire crimper.
6.	B, C. Although there are other connectors used for SCSI, of those listed, the only connectors that are currently used for SCSI connections are the DB-25 and Centronics-50.
7.	B. The only command listed that will tell you what hardware or software is installed on a system is the MSD utility (normally supplied with DOS versions after 6).
8.	C. Although many of these devices can extend the maximum reach of a network, the only one listed that was specifically designed to extend the maximum segment length of a network is a repeater.
9.	B. A bridge learns the MAC addresses of stations on both sides of the bridge and keeps track of which side individual stations are on. Then, when the bridge intercepts a packet, the bridge examines the destination field of the packet and compares the destination address to its list of MAC addresses. The bridge then forwards or rejects the packet based on whether or not the destination station is on the local segment.
10.	A. Updating older drivers on a system can correct various bugs. When a hardware manufacturer detects a bug in a driver, it develops and releases a new version to correct the problem.
11.	B. The correct expansion for EEPROM is electrically erasable programmable read-only memory.
12.	C. Because Plug and Play expansion cards automatically assign a computer’s resources, they can be set to a resource that conflicts with a Legacy ISA card (which doesn’t always register itself with the Plug and Play software).
13.	A, B. As its name suggests, a brouter combines certain functionalities of both a bridge and a router.
14.	B. 10Base2 Ethernet normally uses BNC connectors for making its connections.
15.	D. A tone generator puts a signal on the particular cable being located and the tone locator contains a very sensitive sensor and speaker. When the tone locator is passed near the signal-carrying cable, it emits a sound, indicating that the cable is near. Although a media tester tests cable, it tests only the possible transmission quality of the cable; you would have to find the cable first in order to use it.
16.	C. Although both coax and fiber-optic would work, because the budget is extremely limited and there are only two stations, the best choice to run between the two stations would be coax cable. UTP and STP would not work because they’re limited to a maximum of 100 meters for Ethernet.
17.	A. The only network component listed that actually provides network printing service to network clients is the print server.
18.	B. Spikes are an overvoltage condition in which the power level quickly increases and then decreases just as quickly. A brownout is an inverted surge, and a blackout is a total loss of power for several seconds, several minutes, or several hours.
19.	A. Surges are an overvoltage condition in which the power level increases quickly and stays at a higher level for several seconds. A brownout is an inverted surge, and a blackout is a total loss of power for several seconds, several minutes, or several hours.
20.	C. Brownouts are an undervoltage condition in which the voltage level drops and stays low for several seconds. During a brownout, the lights usually dim and then become bright again.

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