Untitled Quiz
37 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is a characteristic of wide area networks?

  • They have minimal costs associated with their use.
  • They are only used for voice communications.
  • They operate primarily on a local telephone network.
  • They can suffer from high data error rates. (correct)
  • What is one of the primary functions of a wide area network (WAN)?

  • To facilitate voice and data communications across large distances. (correct)
  • To connect different local area networks (LANs) within a building.
  • To ensure high-speed internet access for all organizational members.
  • To provide unlimited long-distance phone service to all users.
  • What does Direct Distance Dialing (DDD) primarily provide?

  • Unlimited data transfer across a private network.
  • Local network connections between two offices.
  • High-speed data transmission exclusively.
  • Voice and data communication over the public telephone network. (correct)
  • What is an example of a vendor that provides hardware for WANs?

    <p>Cisco Systems</p> Signup and view all the answers

    What is typically true about the speed of data transmission in WANs?

    <p>It is often limited to around 56 kbps.</p> Signup and view all the answers

    What type of topology does the original Ethernet design utilize?

    <p>Contention bus topology</p> Signup and view all the answers

    What was the main reason General Motors opted for a deterministic token bus LAN design?

    <p>To avoid delays that could halt assembly line operations</p> Signup and view all the answers

    Which protocol is central to the Manufacturing Automation Protocol (MAP)?

    <p>Token bus</p> Signup and view all the answers

    What is a common application of Wi-Fi LANs mentioned in the content?

    <p>Providing Internet access in cafes and airports</p> Signup and view all the answers

    In what type of environments is the token ring topology particularly utilized?

    <p>Older buildings and confined spaces</p> Signup and view all the answers

    Which technology is suggested as a potential basis for wide-area wireless networks?

    <p>WiMAX</p> Signup and view all the answers

    What aspect of the assembly line influenced the design decision for the LAN used in manufacturing?

    <p>The fixed rate of movement on the assembly line</p> Signup and view all the answers

    What is a distinguishing feature of wireless LANs mentioned in the context provided?

    <p>They allow for enhanced mobility and flexibility.</p> Signup and view all the answers

    What is the typical transmission speed range for coaxial cable?

    <p>10 mbps – 150 mbps</p> Signup and view all the answers

    Which of the following best describes the main advantage of broadband coax over baseband coax?

    <p>Multiple channel support</p> Signup and view all the answers

    What is the typical speed range for twisted pair cables used for LAN applications?

    <p>10 mbps – 100 gbps</p> Signup and view all the answers

    What material typically covers the cylindrical conductor in coaxial cable?

    <p>Plastic</p> Signup and view all the answers

    Which of the following transmission mediums has the slowest typical speed range?

    <p>Twisted pair—voice telephone</p> Signup and view all the answers

    What is the main frequency band used by the 802.11a standard?

    <p>5 GHz</p> Signup and view all the answers

    Which Wi-Fi standard is known for having the greatest range?

    <p>802.11n</p> Signup and view all the answers

    Broadband coax has largely replaced which type of transmission medium in certain applications?

    <p>Fiber-optic cabling</p> Signup and view all the answers

    What is the maximum data rate achievable by the 802.11n standard?

    <p>300 mbps</p> Signup and view all the answers

    What is a key feature of broadband coax compared to baseband coax?

    <p>Higher capacity</p> Signup and view all the answers

    How does the range of the 802.11b standard compare to that of the 802.11a standard?

    <p>802.11b has a longer range than 802.11a.</p> Signup and view all the answers

    Which of the following is NOT typically a characteristic of baseband coax?

    <p>High-speed data transfer</p> Signup and view all the answers

    What technology does Fast Ethernet use to achieve its speed?

    <p>Twisted-pair cabling</p> Signup and view all the answers

    In which frequency bands does the 802.11n standard operate?

    <p>Both 2.4 GHz and 5 GHz</p> Signup and view all the answers

    What is the typical data rate range for the 802.11b standard?

    <p>5.5 to 11 mbps</p> Signup and view all the answers

    Which of the following statements about 802.16e is correct?

    <p>It provides access to mobile users.</p> Signup and view all the answers

    What is a primary advantage of fiber-optic technology over other transmission mediums?

    <p>Higher transmission speeds</p> Signup and view all the answers

    What is used to enable dense wave division multiplexing in fiber optics?

    <p>Prisms</p> Signup and view all the answers

    What type of light source is commonly used in fiber-optic systems?

    <p>Laser diodes</p> Signup and view all the answers

    What is the approximate outside diameter of single-mode fiber-optic cable?

    <p>125 microns</p> Signup and view all the answers

    Which of the following statements is true about the security of fiber optics?

    <p>Fiber optics are very difficult to tap due to lack of radiation emission</p> Signup and view all the answers

    What is one of the components required for an optical transmission system?

    <p>Light source</p> Signup and view all the answers

    How does fiber optics compare in size to typical coaxial cables?

    <p>Significantly smaller in diameter</p> Signup and view all the answers

    What telecommunication technologies competed with fiber optics before the technology was fully deployed?

    <p>Cell phones, DSL, and cable</p> Signup and view all the answers

    Study Notes

    Coaxial Cable

    • Baseb'and coax is commonly used for LANs and long-distance transmissions in the telephone network
    • Baseband coax consists of a central wire surrounded by an insulator, a braided mesh cylinder, and an outer protective plastic covering
    • Broadband coax is the standard cable for television signals and uses digital transmission
    • A single broadband coax can be divided into multiple channels for simultaneous transmission of data, voice, and television
    • Broadband coax has a wider capacity than baseband coax, making it more durable
    • Broadband coax continues to be used for cable television and LANs

    Fiber-Optic Cabling

    • Fiber-optic cabling is a true medium, not a broadcast technology
    • Data is transmitted through pulses of light using fiber-optic cable
    • Key components include a light source (LED or laser diode), fiber-optic cable, and a detector (photodiode)
    • Fiber-optic cables are significantly faster than other media and require less space due to their small diameter
    • Compared to coaxial cables, single-mode fiber-optic cables have a smaller outside diameter and support higher transmission speeds (up to 800 gbps)

    Telecommunications Transmission Speeds

    • Transmission speeds vary depending on the medium
    • Twisted pair for voice telephones typically range from 14.4 kbps to 56 kbps
    • Twisted pair for digital telephones typically range from 128 kbps to 24 mbps
    • Twisted pair in LANs typically range from 10 mbps to 100 gbps
    • Coaxial cable typically range from 10 mbps to 150 mbps
    • Wireless LAN typically range from 6 mbps to 600 mbps
    • Microwave typically range from 256 kbps to 1 gbps
    • Satellite typically range from 256 kbps to 1 gbps

    Network Topologies

    • All telecommunications networks employ one or more of the transmission media discussed
    • Shared Ethernet uses a contention bus as its logical topology

    Wireless LAN

    • Wi-Fi LAN are becoming increasingly popular
    • Wi-Fi is ideal for mobile users, offering access in airports, restaurants, hotels, university campuses, and homes
    • The 802.11a Wi-Fi standard operates in the 5 GHz band with data rates up to 54 mbps but has a limited range of 150 feet
    • The 802.11b standard operates in the 2.4 GHz band with data rates of 5.5 to 11 mbps and a range of 300 to 500 feet
    • The 802.11g standard uses multiplexing in the 2.4 GHz band to achieve data rates up to 54 mbps with a range of 300 to 500 feet
    • The 802.11n standard uses both 2.4 GHz and 5 GHz frequency ranges, achieving data rates up to 300 mbps and a range of up to 1,000 feet

    Higher-Speed Wired Local Area Networks

    • Traditional Ethernet has a top speed of 10 mbps
    • Fast Ethernet operates at 100 mbps and is the most prevalent form of Ethernet in new LANs
    • Fast Ethernet uses the same CSMA/CD architecture and wiring as traditional Ethernet
    • Fast Ethernet is implemented with 100 Base-T for twisted-pair cabling (Category 5) and 100 Base-F for multimode fiber-optic cable

    Wide Area Networks

    • WANs (Wide Area Networks) are called long-haul networks and are used for communication between geographically dispersed entities
    • WANs rely on the public telephone network
    • Direct Distance Dialing (DDD) offers voice and data communication between any two points served by the telephone network but has limited speeds, high data error rates and high cost
    • Wide Area Telephone Service (WATS) provides unlimited long-distance telephone service but uses traditional voice circuits
    • SONET circuits offer varying data transmission rates depending on the SONET level.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    More Like This

    Untitled Quiz
    19 questions

    Untitled Quiz

    TalentedFantasy1640 avatar
    TalentedFantasy1640
    Untitled Quiz
    55 questions

    Untitled Quiz

    StatuesquePrimrose avatar
    StatuesquePrimrose
    Untitled Quiz
    18 questions

    Untitled Quiz

    RighteousIguana avatar
    RighteousIguana
    Untitled Quiz
    50 questions

    Untitled Quiz

    JoyousSulfur avatar
    JoyousSulfur
    Use Quizgecko on...
    Browser
    Browser