Session 1, part 1. IP networking ethernet

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piwi2024
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165515
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Session 1, part 1. IP networking ethernet
Updated:
2012-08-10 02:07:48
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IP networking ethernet
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Description:
Ethernet fundamentals
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  1. How long is the FCS field in the Ethernet frame?

    a. 4 bytes
     b. 8 bytes
     c. 2 bytes
     d. 6 bits
    a. 4 bytes
  2. Which of the following are the properties of MAC addresses?

    A. Unique
    B. 8 bytes
    C. Unique and 48 bits (6 bytes) long
    D. 6 bytes
    C. Unique and 48 bits (6 bytes) long
    (this multiple choice question has been scrambled)
  3. What is used to prevent loops between switches if there are multiple paths between the switches?

    A. UTP
    B. VLAN
    C. STP
    D. FTP
    C. STP
    (this multiple choice question has been scrambled)
  4. How long is the VLAN header ?

    A. 10 Bytes
    B. 8 Bytes
    C. 2 Bytes
    D. 4 Bytes
    C. 2 Bytes
    (this multiple choice question has been scrambled)
  5. The VLAN header consists of which the following fields? (select 2)

    A. TCI
    B. TPID
    C. TOS
    D. DSCP
    TCI and TPID
  6. True or False: Serial communication offers a faster data rate as compared to parallel communication.

    A. True
    B. False
    B. False
  7. True or False: Asynchronous communication begins with a start flag and ends with a stop flag.

    A. True
    B. False
    A. True
  8. By how many bits is each character represented according to ISO-8859 standard? 

    A. 8 bits
    B. 4 bits
    C. 6 bits
    D. 12 bits
    A. 8 bits

    ISO 8859-1 es una norma de la ISO que define la codificación del alfabeto latino, incluyendo los diacríticos (como letras acentuadas, ñ, ç), y letras especiales (como ß, Ø), necesarios para la escritura de las siguientes lenguas originarias de Europa occidental: afrikáans, alemán, castellano, español, catalán, euskera, aragonés, asturiano, danés,escocés, feroés, finés, francés, gaélico, gallego, inglés, islandés, italiano, neerlandés, noruego, portugués y sueco.
    (this multiple choice question has been scrambled)
  9. What is maximum length supported by UTP per standards?

    A. 200 m
    B. 1km
    C. 100 m
    D. 500 m
    C. 100 m

    Unshielded twisted pair o UTP
    (this multiple choice question has been scrambled)
  10. To connect the PC to the LAN, what hardware is needed?

    A. PIC
    B. NIC
    C. NOC
    D. POC
    • B. NIC
    • Network Interface Card
  11. What is the bandwidth requirement for a voice call?

    A. 8 kbps
    B. 640 bps
    C. 64 kbps
    D. 64 bps
    C. 64 kbps
    (this multiple choice question has been scrambled)
  12. True or False: Parallel communication offers faster data rate as compared to serial communication.

    A. True
    B. False
    A. True

    Parallel comm transmits more bits per second than serial (bit by bit)
  13. What maximum data rate does USB 1.1 (version used in the course) support? 

    A. 1.2 Mbps
    B. 12 kbps
    C. 12 Mbps
    D. 10 Mbps
    C. 12 Mbps
    (this multiple choice question has been scrambled)
  14. Which of the following denote standard communication ports on a standalone PC?

    A. OPT, OLT, PRT
    B. COM, LPT, USB
    C. BGE, HME, MAC
    D.  MAC, NIC, PRT
    B. COM, LPT, USB
    (this multiple choice question has been scrambled)
  15. Which cable and connectors are used in standardized structured wiring system?

    A. UTP, RJ45
    B. OC3, LC
    C. Coaxial thinwire connectors, COM1, serial
    A. UTP, RJ45

    Cable UTP, connector RJ45
    (this multiple choice question has been scrambled)
  16. LANS are normally spread across which of the following?

    A. Building
    B. Metro area
    C. City
    D. All of the above
    B. Metro area
    (this multiple choice question has been scrambled)
  17. Which of the following are the functions/roles of the Network Interface Card at the MAC layer?

    A. Transmit correct signals eg.Voltage levels
    B. Hardware interface to the cable system and Transmit correct signals eg.Voltage levels
    C. Access method and Addressing
    D. Hardware interface to the cable system
    C. Access method and Addressing
    (this multiple choice question has been scrambled)
  18. Which of the following is an IEEE Ethernet standard ? 

    A. 802.16
    B. 802.3
    C. 802.11
    D. 802.15
    B. 802.3
    (this multiple choice question has been scrambled)
  19. IEEE 802.16 is also known by which of the following names? 

    A. VLAN
    B. WiMAX and Wireless MAN
    C. Wireless Personal Area Network
    D. WLAN
    B. WiMAX and Wireless MAN

    http://en.wikipedia.org/wiki/802.16 

    IEEE 802.16 is a series of Wireless Broadband standards authored by the IEEE.
    The IEEE Standards Board established a working group in 1999 to develop standards 
    for broadband for Wireless Metropolitan Area Networks.
    The Workgroup is a unit of the IEEE 802 local area network and
    metropolitan area network standards committee.
    (this multiple choice question has been scrambled)
  20. In CSMA/CD the purpose of random back off is to

    A. Reduce the number of Broadcasts
    B. Increase the number of Broadcasts
    C. Reduce the number of collisions
    D. Increase the number of collisions
    C. Reduce the number of collisions

    Carrier sense multiple access with collision detection (CSMA/CD) is a Media Access Control method in which:

    (1) A carrier sensing scheme is used.
    (2) A transmitting data station that detects another signal while transmitting a frame, stops transmitting that frame, transmits a jam signal, and then waits for a random time interval before trying to resend the frame.
    (this multiple choice question has been scrambled)
  21. What is the maximum payload size supported by a single Ethernet frame? 

    A. 150 Bytes
    B. 1500 Bits
    C. 1500 Bytes
    D. 1000 Bytes
    C. 1500 Bytes

    The minimum payload is 42 octets when 802.1Q tag is present and 46 octets when absent and the maximum payload is 1500 octets. Non-standard jumbo frames allow for larger maximum payload size.
    (this multiple choice question has been scrambled)
  22. HIPERLAN/2 provides high speed access to which of the following?

    A. UMTS core Network
    B. ATM networks
    C. IP networks
    D. Ethernet
    E. All of the above
    E. All of the above

    HiperLAN (High Performance Radio LAN) is a Wireless LAN standard.[1] It is a European alternative for the IEEE 802.11 standards (the IEEE is an international organization). It is defined by the European Telecommunications Standards Institute (ETSI). In ETSI the standards are defined by the BRAN project (Broadband Radio Access Networks). 

    • HiperLAN/1
    • HiperLAN/2

    http://en.wikipedia.org/wiki/Hiperlan/2
  23. In which frequency band does IEEE 802.11a operate?

    A. 5GHz
    B. 2.4 GHz
    C.  17 GHz 
    D. All of the above
    A. 5GHz

    It operates in the 5 GHz band with a maximum net data rate of 54 Mbit/s, plus error correction code, which yields realistic net achievable throughput in the mid-20 Mbit/s
    (this multiple choice question has been scrambled)
  24. What is a wireless LAN mode operating with an AP called ?

    A. Infrastructure mode
    B. None
    C. Ad hoc Network
    D. Both
    A. Infrastructure mode
    (this multiple choice question has been scrambled)
  25. How long is the FCS field in the Ethernet frame? 

    A. 2 Bytes
    B. 4 Bytes
    C. 6 Bytes
    D. 8 Bytes
    B. 4 Bytes
    (this multiple choice question has been scrambled)
  26. True or False: HIPERLAN/2 provides a quality of service feature.

    A. True
    B. False
    A. True
  27. True or False: Every port of a switch is an independent collision domain.

    A. True
    B. False
    A. True
  28. In 10 base 2 what does 10 signify? 

    A. Speed of 100 Mbps
    B. Speed of 10 Mbps
    C. Speed of 10 kbps
    D. Distance of 100 meters
    B. Speed of 10 Mbps

    The common names for the standards derive from aspects of the physical media. The leading number (10 in 10BASE-T) refers to the transmission speed in Mbit/s. BASE denotes that baseband transmission is used. The T designates twisted pair cable, where the pair of wires for each signal is twisted together to reduce radio frequency interference andcrosstalk between pairs. 
    (this multiple choice question has been scrambled)
  29. IEEE 802.15 specializes in which of the following? 

    A. Wireless Personal Area Network
    B. WiMAX
    C. Wireless MAN
    D. None of the above
    A. Wireless Personal Area Network

    IEEE 802.15 is a working group of the IEEE 802 standards committee which specifies Wireless Personal Area Network (WPAN) standards. It includes seven task groups.
    Task Group 1: WPAN / Bluetooth
    Task Group 2: Coexistence
    Task Group 3: High Rate WPAN
    Task Group 4: Low Rate WPAN
    Task Group 5: mesh networking
    Task Group 6: Body Area Networks
    Task Group 7: visible light communication
    (this multiple choice question has been scrambled)
  30. What access technique is used in Wireless LAN?

    A. Carrier sense Multiple Access / Collision Detect
    B. Carrier Sense Multiple Access / Collision avoidance
    B. Carrier Sense Multiple Access / Collision avoidance
  31. What protocol is used to prevent loops between switches if there are multiple paths between the switches?

    A. UTP
    B. STP
    C. FTP
    D. VLAN
    B. STP
    (this multiple choice question has been scrambled)
  32. HIPERLAN/2 operates in which frequency band?

    A. 5GHz
    B. 2.4 GHz
    C. 17 GHz
    D. All of the above
    A. 5GHz
    (this multiple choice question has been scrambled)
  33. Which of the following are disadvantages of WLAN compared to that of wired line?

    A. Less capacity
    B. Security issues
    C. Expensive equipment
    D. All of the above
    D. All of the above
  34. Which of the following are characteristics of Bluetooth

    A. Open standard
    B. A & B
    C. Low energy consumption
    D. High energy consumption
    B. A & B

    Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. Created by telecoms vendor Ericsson in 1994,[1] it was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization.
    (this multiple choice question has been scrambled)

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