CISCO Wireless Technology and Standards 2019 Answers

Other answers
  1. Which of the following statements are not correct with regards to the transmission of electromagnetic waves? (Choose 2)
    • Similar to IEEE 802.15-1, the IEEE 802.15-4 standard define transmission of data over long distances.
    • Global System for Mobile communication is one of the standard for wired communications available in the world.
  2. Which statement is not correct?

    • Frequency is measured in Hertz(Hz) or in seconds(s).
  3. Which of the following answers describes a frequency that is seen 1 million times per second?

    • 1MHz
  4. Which of the following conditions are significant problems experienced with wireless networks? (Choose 2)

    • Signal refraction
    • Signal reflection
  5. Which 802.11 standard uses the 5GHz range? (Choose 3)

    • 802.11ac
    • 802.11n
    • 802.11a
  6. Which of the following statements are correct? (Choose 3)

    • Wireless is always half duplex because of communication environment.
    • High modulation technique is required for high bandwidth.
    • It is free to transmit in ISM (Industrial Scientific Medical) Band.
  7. Which is a characteristic of 2.4GHz?

    • Each channel has 22 MHz band.
  8. Which modulation techniques are use in Wireless LANs? (Choose 3)

    Wireless Technologies and Standards Quiz 005

    Wireless Technologies and Standards Quiz 005

    • MIMO
    • DSSS
    • OFDM
  9. Which of the following is true with regards to CSMA/CA? (Choose 3)

    • To avoid collisions on a wireless network, CSMA/CA is used.
    • Collision Avoidance implies that when a device wishes to send, it must listen first.
    • The RTS/CTS mechanism is used to avoid collision in wireless networks.
  10. What advantages does Multi-User MIMO offer to wireless networks? (Choose 3)

    • Support data speed beyond 1 Gbps.
    • Eliminate collisions
    • Support full-duplex communications over wireless networks.
  11. What is the capability in a 802.11n wireless NIC that takes all the electro-mangetic waves and composes them to one high-quality wave, resulting in a throughput increase?

    Wireless Technologies and Standards Quiz 002

    Wireless Technologies and Standards Quiz 002

    • MRC
  12. Whenever Joe brings his tablet into the kitchen that has a microwave oven, cordless phone and other home appliances, his internet connection is affected. Which Wireless LAN standard might his tablet be set to? (choose 3)Wireless Technologies and Standards Quiz 003

    Wireless Technologies and Standards Quiz 001

    Wireless Technologies and Standards Quiz 004

    • 802.11b
    • 802.11g
    • 802.11n