Unit 4 Assignment 1: Computer Basics Review
Chapter 4 Review Activities
Questions
Answers
1. You have created a simple electrical circuit with a battery, wires, and a light bulb. Which of the following is true about this circuit? (Choose two answers)
B. The battery’s positive lead pulls current toward that lead.
C. The circuit creates a direct current
2. A PC NIC and a switch port create one electrical circuit to use when sending data. The sender creates a (maximum) 1-volt electrical signal with a frequency of 1000 hertz. Which of the following facts are also true? (Choose two answers)
B. The phase changes over time
C. The amplitude changes over time.
3. A PC NIC and a switch port create one electrical circuit to use when
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The cabling pinouts used
8. Which of the following answers best describes the definition of a cabling pinout?
C. The color of the wires and the pin numbers to which they connect on both ends of a cable.
9. A PC NIC connects to a switch port using 100BASE-T. Which of the following is true about what happens on that link?
A. The switch receives data on a circuit that includes the wire at the switch’s pin 2.
10. With a fiber-optic cable, the core of the cable, through which light passes, is made of which of the following?
C. Glass
11. Which of the following is the type of transmitter used on fiber-optic links that provides the longest maximum distances?
C. Laser
12. Which one answer lists the most likely place to find a fiber-optic link in a campus Ethernet LAN?
D. Between two switches in different buildings in the same office park
13. This chapter describes SONET, a family of physical layer standards used in telco networks over the last few decades. Which of the following are true about the slow and fast end of the optical carrier (OC) standards mentioned in this book: OC-1 and OC-192? (Choose two answers)
A. OC-1 runs at approximately 52 Mbps
D. OC-192 runs at approximately 10,000 Mbps (10Gbps)
14. What physical medium/media do radio waves need to move from one place to another?
B. The Earth’s ionosphere
15. Fred has a smart phone and a contract with SlateRock mobile. He uses his smart phone to call his friend Barney, on Barney’s
A network interface card is already present in the computers. The purpose of the network card is to enable the computers to connect together using a protocol in order to transfer packets of data. In order to connect the computers, a form of connection is required that links the computers. In this case the form of connection used will be ethernet (Science - Opposing Views, 2014).
7. What is the piece of hardware that allows a device to physically access a network?
10/ You cheat on an exam. Your classmate reports this to the department chair. Which of the following is correct?
E 6. B 7. E 8. B 9. A 10.
Use the network diagram below and the additional information provided to answer the corresponding questions. [15 points]
The whole thing is usually wrapped in another layer of insulation and, finally, in an outer protective layer. (/coaxial_cable.html)
According to (Burke, 2004),A switch is a multiport bridge. When a switch receives a frame (A data packet with address and other protocol information embedded), it amplifies the signal, looks at the MAC address to determine which port should retransmit the frame to get it to the intended network device and sends it to that port. The switch can be configured to disconnect any attached device, to discard frames intended for an attached device, to send frames with a specific hardware address to another hardware address instead and to copy a frame to a mirror port which can send it to an attached traffic monitor.
The definition of a switch or network switch is a small device that joins multiple computers together, working on layer two of the OSI, to form a local
Held, G. (1999). Data communications networking devices: Operation, utilization, and LAN and WAN internetworking. Chichester: Wiley.
10. The letters S, SD, SO & STO represent cords which are designated for hard or extra-hard usage.
|potential to overload sockets. (Electricity Regs) |sockets/network connection under or on table centrally. |Immediate |
Which of the following is the unit of measurement by which a hub's bandwidth is usually
10. Generally speaking, the ______ should focus mainly on clarity and the ______ should focus mainly on accuracy. A.
B. True/False. Encircle T if the statement is correct and F if it is incorrect.
The proposed network is designed for the UMUC new building in Rockville. This new building will have some administrative offices, lecture rooms, library, and computer labs with an open Wi-Fi. This new building will have total six computer labs that will be used for instruction. Each of these labs will have 25 computers, 23 student computers and one instructor computer, one server in the closet and in addition to the six computer labs, there will also be a Student Computer Lab that will provide computer access to students for doing their own purpose like homework. In Student Computer Lab there will be 30 computers and a server in the closet. There will be 10 computers for student’s use and 5 computers for Library staff in the library so they can access to the library resources for staff use, with the exception of the admissions office, which will have five computers. There will be six class room which will have a computer for instructor’s use. Finally, there will be 7 offices in the building and each of these offices will have one computer. There will be two server rooms, one on the first floor and another one on the second floor. There should be at least 3 separate networks: Administrative, Instructional, and Public. All staff-accessed computers will be on the