Physical Network Layer Concepts

Powerful Essays
Topics: Ethernet
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 sending data from the PC to the switch. Which of the following tasks is a function done by the transmitter? (Choose two answers)
A. Completes the electrical circuit by looping two wires together on its end
C. Creates current on the circuit
4. A PC NIC and a switch port create one electrical circuit to use when sending data from the PC to the switch. The transmitter uses a higher amplitude to encode 1 and a lower amplitude to encode 0, sending 1 bit in each bit time. The bit rate is 2000 bits per second (2000 bps). Which of the following is true on this circuit?
C. The transmitter must change the amplitude 2000 times per second.
5. Two nodes use an encoding scheme that cannot use one circuit to both send and receive data at the same time. The link physically contains two wires. Which of the following is a possible option to allow both nodes to send data?
B. Create one circuit, and take turns sending over the circuit.
6. UTP cables can have up to eight wires inside the cables. Which of the following is the most likely reason why EMI from one wire does not affect the electrical behavior of another wire inside the same cable?
B. Twisting the pairs together.
7. Which of the following facts are in common between both of the

You May Also Find These Documents Helpful

  • Good Essays

    Role of the Physical Layer, Data Link Layer and Network layer for the in Network Transmissions for DotCom The Role of the Physical Layer, Data Link Layer and Network layer for the in Network Transmissions for DotCom As the Network Manager of NotCom, my goal is to plan and implement the corporate network services strategy that is the best fit for the future needs of the organization as the growth from 20 to 150 employees is realized. To reiterate, all employees have PCs that are a part…

    • 1069 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    cycle. Bit time - the time it takes for one bit to be ejected from a Network Interface Card at a standard speed. Encoding scheme - used by computers to represent data as characters. unshielded twisted-pair (UTP) - Copper wiring used in small-to-large networks to connect host devices to hubs and switches. Core - the central part of an optical fiber that provides the transmission region for an optical signal. Cladding - A layer of optical glass surrounding the light-carrying core of an optical…

    • 255 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Network Security at OSI Layers Muhammad Muzammil Syed Zeeshan Nasir Department of computer science FUUAST, Islamabad 1-OSI Model: In 1983, the International Organization for Standardization (ISO) and the International Telegraph and Telephone Consultative Committee (CCITT) merged documents and developed the OSI model, which is based on a specific hierarchy where each layer builds on the output of each adjacent layer. The OSI model is a protocol stack where the lower layers deal primarily…

    • 7615 Words
    • 31 Pages
    Good Essays
  • Good Essays

    Introductory Network Concepts, Network Standards, and the OSI Model 1. There are many reasons for a company to network its computers, some are as follows; Share software, information with others on networks, cheaper than buying individual software and hardware for each standalone especially if the software often offers deals for amount being purchased, e-mail between network users, and flexible access from any computer on the network. 2. Two fundamental network models are peer-to-peer(P2P)…

    • 845 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Network Security Concepts

    • 1883 Words
    • 8 Pages

    Network Security Concepts Name NTC 410 Instructor 's Name November 1, 2005 File security falls into two categories, encryption and access. Access to files can mean physical access to a computer with unsecured files or access via user permissions or privileges in the form of access control lists (ACLs) (Strengthen Your Users ' File Security, 2003). The files kept on a server with NTFS storage can be locked to prevent anyone who does not have the correct permissions from opening them. This is…

    • 1883 Words
    • 8 Pages
    Powerful Essays
  • Better Essays

    Final Exam of Computer Networks (ICE 1230) 2008.5. 27. Answer in English and Total 15 points 1. Why is it said that packet switching employs statistical multiplexing? Contrast statistical multiplexing with the multiplexing that takes place in TDM. (1 point) Answer: In a packet switched network, the packets from different sources flowing on a link do not follow any fixed, pre-defined pattern. In TDM circuit switching, each host gets the same slot in a revolving TDM frame. 2. In BitTorrent…

    • 955 Words
    • 3 Pages
    Better Essays
  • Good Essays

    the unit of data sent or received at each of the following layers? a. application layer:Message b. network layer:Datagram c. data-link layer:Frame Q2-12) When we say that the transport layer multiplexes and demultiplexes application layer messages, do we mean that a transport-layer protocol can combine several messages from the application layer in one packet? Explain. The TCP/IP protocol suite uses several protocols at some layers, we can say that we have multiplexing at the source and demultiplexing…

    • 524 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    ISO-OSI 7-Layer Network Architecture This lecture introduces the ISO-OSI layered architecture of Networks. According to the ISO standards, networks have been divided into 7 layers depending on the complexity of the functionality each of these layers provide. The detailed description of each of these layers is given in the notes below. We will first list the layers as defined by the standard in the increasing order of function complexity: 1. Physical Layer 2. Data Link Layer 3. Network Layer 4.…

    • 28210 Words
    • 113 Pages
    Powerful Essays
  • Good Essays

    Logical and Physical Network Design Logical and Physical Network Design Network design is a process that begins from the first thought on how to connect to computers together in order for them to communicate and pass needed data to each other. The process may seem simple on this level and may require little consideration, but in fact, there are many areas of the network that need to be examined before the process of networking should be undertaken. For the small network, these considerations…

    • 882 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Logical and Physical Network Design Logical and physical network designs are critical components in the successful development and implementation of today 's networks and allow for the proper planning and structuring bettering enhancing the concept associated with networks. In order to better understand how the two concepts of a logical design and physical design work hand-in-hand, let 's first look at what the concepts entail. A logical design is a concept, thought or theory as to how you…

    • 816 Words
    • 4 Pages
    Good Essays