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Flashcards

CompTIA Network+ - Ch_1

Amber Saxon CompTIA Network+ English 156 cards

CompTIA Network+ - Ch_1

Cards in this deck (156)

  1. 1Which Topology (star, bus, ring) would utilize a switch?Star
  2. 2With which topology does every node have a direct connection to every other node?Mesh Topology
  3. 3Name some types of topologies?Bus
    Ring
    Star
    Mesh
    Wireless
  4. 4Bus Topology* Backbone
    * T connectors (taps) connect to Backbone
    * Hub or Switch not needed
    * Each physical bus must be TERMINATED (avoid signal reflection)
  5. 5—Bus TopologyBus Topology
  6. 6IEEE 802.3 is?Ethernet Standard
  7. 7Advantages of Bus Topology*Cheap and Easy
    *Less Cable
    *No specialized Network Equipment
  8. 8Disadvantages of Bus Topology*Network disruption if devices added or removed.
    *A break in the backbone cable means all systems are disconnected fro network
    *Hard to Troubleshoot
  9. 9Ring Topology*logical ring
    *data travels in a circular manner
    *Hub or Switch NOT needed.
  10. 10—Ring TopologyRing Topology
  11. 11MSAUMultistation Access Unit
  12. 12What is a Multistation Access Unit (MSAU)?In a Ring Network
    The MSAU acts as a
    Hub or Switch on an
    Ethernet Network
  13. 13RI RORing-In
    Ring-Out
    MSAUs are connected to one another in a ring configuration using RI and RO.
  14. 14Advantages of a Ring Topology*Cable faults easily located
    *Troubleshooting easier
    *Moderately easy to install
  15. 15Disadvantages of Ring Topology*Expansion of Network can cause disruption
    * A Single cable break can disrupt the entire network.
  16. 16Star Topology Features*Hub/Switch
    is used as a central device for all devices to connect to.
    *Point-to-point connection between hub and device
  17. 17—Star TopologyStar Topology
  18. 18Advantages of Star Topology*Easily expanded
    *Cable failure only affects one user
    * easy to troubleshoot
    *most common topology
  19. 19Disadvantages of Star Topology*More cable required
    *Central device = single point of failure
    *More Networking Equipment needed.
  20. 20Wired Mesh Topology*Each Device connected to the other
    *Point to Point connection with each device
    *High Level of Redundancy
    *Alternative paths available
    *Wiring can be complicated
    *Troubleshooting can be hard
    *Cabling costs high
    *Popular with Servers/Routers
  21. 21—Wired Mesh TopologyWired Mesh Topology
  22. 22The redundant connections of the mesh Topology offers better.....?Fault Tolerance
  23. 23Advantages of Wired Mesh Topologies*Redundant paths between LAN topologies
    *Network can be expanded
  24. 24Disadvantages of Wired Mesh Topologies*More cables required
    *Complicated
  25. 25Name the three Wireless Topologies*Infrastructure
    *ad hoc
    *Mesh
  26. 26What is an AP?Access Point (AP)
    or
    Wireless Access Point (WAP)
  27. 27Infrastructure Wireless Topology*Extend a LAN to include Wireless Devices
    *Wireless Devices communicate to WAP
    *WAP(AP) forms a bridge to wired LAN.
    *WAPs are part of the wired network.
    *There can be several WAPs
  28. 28Ad Hoc Wireless Topology*Peer-to-peer network
    *eg: laptops in a boardroom
    *eg: printer to mobile device via Bluetooth
    *Does not use WAP
    *AKA
    Unmanaged Wireless Topology
  29. 29—Ad Hoc Wireless TopologyAd Hoc Wireless Topology
  30. 30—Infrastructure Wireless TopologyInfrastructure Wireless Topology
  31. 31Wireless MESH Topology*Common
    *Each node interconnected to other nodes
    *WAP attached to wired network.
    *Relays the signal
    *Inexpensive
  32. 32—Wireless Mesh TopologyWireless Mesh Topology
  33. 33Wireless Mesh*Data can travel multiple paths
    *Adding a node improves network performance and decreases congestion
  34. 34Wireless Mesh Topologies are: * Self-Healing *Scalable *Reliability *CostSelf-Healing
    *Adapt to network failure
    if node removed.
    Scalable
    Reliable - Redundant Nodes
  35. 35Hybrid Topologies examples*Star Bus
    A combination of star topology and bus topology
  36. 36—Hybrid Topology
    STAR BUS    Hybrid Topology STAR BUS
  37. 37You have been asked to install a network that will give the network users the greatest amount of fault tolerance. Which of the following network topologies would you choose? a) Star b) Ring c) Mesh d) Busc) Mesh
  38. 38Which of the following topologies allows for network expansion with the least amount of disruption for the current network users? a) Bus b) Ring c) LAN d) Stard) Star
  39. 39Which Topology is this? a) Star b) Star Bus c) Ad Hoc d) Infrastructured) InfrastructureWhich Topology is this? a) Star b) Star Bus c) Ad Hoc d) Infrastructure
  40. 40Which network topology offers the greatest level of redundancy but has the highest implementation cost? a) Wireless Mesh b) Wired Mesh c) Hybrid Star d) Bus Networkb) Wired Mesh
  41. 41Which of the following statements are associated with a bus LAN network? (Choose all) a) A single cable break can cause complete network disruption b) All devices connect to a central device c) It uses a single backbone to connect all network devices d) It uses a dual-ring configurationa) A single cable break can cause complete network disruption
    c) It uses a single backbone to connect all network devices
  42. 42As a network administrator, you are called in to troubleshoot a problem on a token ring network. The network uses two MSAUs connected using the ring-in ports on bot devices. All network cards are set at the same speed. What is the likely cause of the problem? a) Bad network card b) Faulty Cabling c) MSAU configuration d) Network Card Configurationc) MSAU configuration
    To create the complete right, the ring-in(RI) port on each MSAU is connected to the ring-out (RO) port on another MSAU. The last MSAU in the ring is then connected to the first to complete the ring.
  43. 43Half-Duplex TransmissionDevices can send and receive data.
    Not at the same time.
  44. 44CollisionA collision occurs when two devices send data at the same time, on a half-duplex system and the data collides.
  45. 45Full-Duplex TransmissionData can be sent and received at the same time.
  46. 46CSMA/CDCarrier Sense Multiple Access with Collision Detection
  47. 47How does CSMA/CD work?Manages Device transmission to avoid collisions:
    * listens until there are no transmissions
    *Send a RTS (Request To Send)
    *Waits for CTS
    *Begin transmitting data (ethernet frame). Continues to listen.
    *If another transmission is detected, a collision has occurred
    *Waits and resends.
  48. 48Ethernet frames (data) sent: Unicast addressOne to One
    The destination address represents a single device
  49. 49Ethernet frames (data) sent: Multicast addressOne to Many
    Address represents a group of chosen devices.
  50. 50Ethernet frames (data) sent: Broadcast addressOne to All
    A special multicast address that all devices must subscribe to.
  51. 51Which topologies utilize half-duplex?Bus
  52. 52Which topologies utilize full-duplex?Star, Mesh etc
  53. 53BridgeForward Frames from one line to an alternative line, aka
    Store and Forward.
  54. 54Store and ForwardUsed by a Bridge to Forward Frames from one line to an alternative line, aka
  55. 55Bridge Advantages* Saves bandwidth
    *Increases Speed
  56. 56Bridge Functionality*Corrupted frames are discarded before bridge (forwarded)
    *Collisions do not extend across bridge
    *Learns which side devices are on.
    *The mechanism for the forwarding of frames on the outbound line is entirely independent of the mechanism for receiving on the inbound line, allowing different speeds to be used.
  57. 57BPDUBridge Protocol Data Units (BPDUs).
  58. 58BPDU functionalityswitches communicate with each other by exchanging Bridge Protocol Data Units (BPDUs).
  59. 59RTSRequest To Send
  60. 60CTSClear To Send
  61. 61data frameThe message
  62. 62You are implementing a 1000BaseT network. Which physical topology does the network use? a) Star b) Ring c) Bus d) Mesha) Star
    The 1000BaseT standard define an Ethernet network using a twisted-pair cable, which would be configured in a physical star configuration. When it comes to the logical topology, regardless of the physical configuration, an Ethernet network uses a bus topology.
  63. 63Bluetooth is a popular choice for creating personal area networks (PANs). On which IEEE 802 standard is it based? a) 802.11ac b) 802.15.1 c) 802.11g d) 802.11ib) 802.15.1
  64. 64Which of the following network types is easiest to add new nodes to? a) Star b) Ring c) Mesh d) Busa) Star
  65. 65Which of the following technologies uses a proximity reader for reading proximity cards, read when close to a reader and truly never needing to touch anything? a) 802.11 b) RFID c) FHSS d) DSSSb) RFID
  66. 66Which of the following is a wireless protocol often used to control lighting systems, television sets, and other indoor entities such as a line of fitness monitoring equipment licensed by Garmin? a) Z-Wave b) NFC c) ANT+ d) RFIDc) ANT+
    ANT+ is a proprietary wireless protocol often used to control lighting systems etc.
  67. 67MIMO (Multiple In, Multiple Out) was introduced with which 802.11 standard? a) 802.11g b) 802.11n c) 802.11b d) 802.11acb) 802.11n
  68. 68When a WAN isconfined to a certain geographic area, such as a university campus or city, it is sometimes known as which of the following? a) MAN b) NAS c) CRAN d) SANa) MAN
  69. 69The goal of which 802.11 standard is 500 Mbps with one link and 1.3 Gbps with mutliple links? a) 802.11n b) 802.11g c) 802.11b d) 802.11acd) 802.11ac
  70. 70Which of the following technologies has grown in popularity with phones being used as part of the payment systems? a) DSSS b) NFC c) IR d) FHSSb) NFC
  71. 71NFCNear Field Communication
  72. 72Which of the following topology types offers the greatest amount of redundancy? a) Star b) Mesh c) Ring d) Busb) Mesh
  73. 73Instead of being wholly dependent on wiring for your local network, which of the following provides a flexible and secure data communications system that augments an Ethernet LAN or, in some cases, replaces it altogether? a) PAN b) CAN c) WLAN d) WPANc) WLAN
  74. 74How many devices can be on a Z-Wave network? a) 24 b) 48 c) 232 d) 96c) 232
  75. 75The most common implementation of a linear bus is which IEEE Ethernet standard? a) 802.3 b) 802.2 c) 802.11 d) 802.5a) 802.3
  76. 76In what type of wireless topology do devices communicate directly among themselves without using an access point. a) Host b) Client c) Mesh d) Ad Hocd) Ad Hoc
  77. 77Because of the redundant connections, which topology offers better fault tolerance than other topologies? a) Bus b) Star c) Ring d) Meshd) Mesh
  78. 78What type of communication does ANT+ utilize? a) Unidirectional, parallel b) Unidirectional, serial c) Bidirectional, serial d) Bidirectional, parallelc) Bidirectional, serial
  79. 79How many Bluetooth channels are available? a) 32 b) 63 c) 16 d) 79 e) 127d) 79
  80. 80Which of the following is a computer network in a defined area that links buildings and consists of multiple LANs within that limited geographical area? a) PAN b) SAN c) DAN d) CANd) CAN
    A Campus Area Network
  81. 81Which network topology offers the greatest level of redundancy but has the highest implementation cost? a) Bus b) Wireless Mesh c) Wired Mesh d) Hybrid Starc) Wired Mesh
  82. 82Which of the following topologies allows for network expansion with the least amount of disruption for the current network users? a) LAN b) Ring c) Star d) Busc) Star
  83. 83When a WAN is confined to a certian geographical area, such as a city, it is known as: a) LAN b) VAN c) MAN d) VPNc) MAN
  84. 84You are installing a wireless network solution, and you require a standard that can operate using either 2.4 GHz or 5Ghz. Which of the following standards would you choose? a) 802.11b b) 802.11a c) 802.11ac d) 802.11n e)802.11gd) 802.11n
  85. 85You have been asked to install a network that will give the network users the greatest amount of fault tolerance. Which of the following topologies would you choice? a) Mesh b) Ring c) Bus d) Stara) Mesh
  86. 86You are called in to troubleshoot on a token ring network. The network uses two MSAUs connected using the ring-in ports on both devices. All network cards are set at the same speed. Whats up? a) Faulty cabling b) Network card config c) Bad network card d) MSAU configd) MSAU config
  87. 87Which of the following statements are associated with a bus LAN network? (Choose all) a) A dual-ring config b) A single cable break can cause complete network disruption. c) It uses a single backbone to connect all network devices d) All devices connect to a central device.b) A single cable break can cause complete network disruption.
    c) It uses a single backbone to connect all network devices
  88. 88You are installing a wireless network solution that uses a feature known as MU-MIMO. Which are you using? a) 802.11ac b) 802.11n c) 802.11a d) 802.11ba) 802.11ac
  89. 89Which of the following provides a flexible and secure data communications system that augments an Ethernet LAN or, in some cases, replaces it altogether? a) MAN b) CRAN c) PHLAN d) WLANd) WLAN
  90. 90hOW MNAY bLUETOOTH CHANNLES ARE AVAILABLE FOR USE? a) 109 b) 802 c) 79 d) 19c) 79
  91. 91Dustin is designing a new office building and wants to use a Z-Wave network to have all the heating and cooling devices communicate with each other. How many devices can be on a Z-Wave network? a) 256 b) 232 c) 128 d) 64b) 232
  92. 92Elijah has been charged with helping customize a software program to be used with phones as part of an NFC payment system. What is the common distance accepted for near field communication in this scenario? a) 14cm b) 1cm c) 4cm d) 1.4cmc) 4cm
  93. 93802.11g offers wireless transmission over distance of how far? a) 150 feet b) 500 feet c) 802 feet d) 185 feeta) 150 feet
  94. 94Which of the following statements regarding 802.11n is true? a) while 802.11n can transmit more than one spatial stream at the same time, the streams are directed to a single address. b) 802.11n allows for MUMIMO to let an AP send multiple frames to multiple clients at the exact same time c) 802.11n and 802.11ac are identical in every way, and the naming is dependent on the vendor. d) ANT+ requires 802.11n to be present.a) while 802.11n can transmit more than one spatial stream at the same time, the streams are directed to a single address.
  95. 95Which company governs the ANT+ STANDARD? a) apple b) novell c) microsoft d) garmind) garmin
  96. 96What transmission rates are common with IP-based wireless networking? a) 10Gbps to 12Gbps b) 10Mbps to 10Gbps c) 10Mbps to 16Mbps d) 10Kbps to 14Kbpsc) 10Mbps to 16Mbps
  97. 97What bandwidth is available to each Bluetooth channel? a) 2.1 MHz b) 11 MHz c) 1 MHz d) 5.4 MHzc) 1 MHz
  98. 98Mike is new to the job and has just encountered a problem with speed on an 802.11a network - a technology that he has no previous experience with. What is the max speed specified by 802.11a? a) 12 Mbps c) 24 Mbps c) 54 Mbps d) 6 Mbpsc) 54 Mbps
  99. 99In wireless networking, how wide is a single channel? a) 1 MHz b) 8 MHz c) 20 MHz d) 11 MHzc) 20 MHz
  100. 100Which of the following is a feature of wireless mesh networks referring to the network's capability to adapt to network failure and even function if a node is moved form one location to another? a) Scalable b) Translucent c) Self-healing d) Elasticc) Self-healing
  101. 101Karl is configuring the Z-Wave devices on his network. How many bits are used for the home IP on each device? a) 128 b) 64 c) 32 d) 56c) 32
  102. 102Which of the following is the max speed available on an 802.11ac network? a) 11 Mbps b) 600 Mbps c) 1.3 Gbps d) 54 Mbpsc) 1.3 Gbps
  103. 103True or False The biggest difference between a LAN and a WAN is usually the size of the network?True
  104. 104What network type is essentially a LAN created to share data among devices associated with you?A PAN
    Personal Area Network
    is essentially a LAN created to share data among devices associated with you.
  105. 105In what networking type is consolidated, block-level data storage made available to devices on the network?A SAN
    Storage-Area Network makes block-level data storage available to devices on the network.
  106. 106LANLocal Area Network
  107. 107WANWide-Area Network
  108. 108PANPersonal-Area Network
  109. 109SANStorage-Area Network
  110. 110RFRadio Frequency
  111. 111A WAP or Wireless Access Point is also known as, what?Wireless Transceiver (Transmitter/receiver)
  112. 112WLANWireless Local Area Network
  113. 113MANMetropolitan-Area Network
    Confined to a certain geographic area, eg: university campus or city
    A MAN is smaller than a WAN
  114. 114CANCampus-Area Network
  115. 115SANStorage-Area Network
    Networked shared storage devices.
    SANs are subsets of LANs and offer block-level data storage.
    It appears within the OS of the connected devices as a locally attached drive.
  116. 116PANsPersonal Area Network
    Usually ad hoc Bluetooth or NFC
  117. 117WPANWireless Personal Area Network
  118. 118When a WAN is confined to a certain geographic area, such as a city, it is known as: a) LAN b) MAN c) VAN d) VPNb) MAN
  119. 119Which of the following is a computer network in a defined area that links buildings and consists of multiple LANs within that limited geographic area? a) SAN b) PAN c) DAN d) CANd) CAN
  120. 120Which of the following provides a flexible and secure data communications system that augments an Ethernet LAN or, in some cases, replaces it altogether? a) PHLAN b) MAN c) WLAN d) CRANc) WLAN
  121. 121What is the access method employed by the 802.11 wireless standards?All the 802.11 wireless standards employ the CSMA/CA access method.
  122. 122What technologies are considered the biggest developments for 802.11n/802.11ac and the keys to the newer speeds?MIMO and MU-MIMO antenna technologies
  123. 123Name the 7 technologies currently used to connect IoT devices?Z-Wave
    Ant+
    Bluetooth
    NFC
    IR
    RFID
    802.11
  124. 124Z-WaveOffice/residential/automation market
    HVAC, automated window coverings, home cinema, home security/access.
    Up to 232 devices.
    US Frequancies include 908.4 and 916.
    32-bit Network ID.
    8-bit Node ID
  125. 125Ant+Garmin
    Lighting, TVs, fitness monitoring
    2.4GHz range
    MCU interface with chipset or chip.
    Bidirectional // Serial
    Each channel has a master and a slave
  126. 126Bluetooth2.4 to 2.485 GHz band.
    IEEE 802.15.1 standard
    standard now managed by SIG Bluetooth Special Interest Group.
    79 Channels available.
    1 MHz bandwidth for each channel.
    1 master to 7 slaves.
    Bluetooth versions: v1.0,v1.2,v2.0,v2.1,v3.0, v4.0, v4.1, v5.0
  127. 127Bluetooth 5IoT
    Double the speed (2 Mbps)
    4 x the range
    8 x data broadcasting capacity
    compare to BT v4.0
  128. 128NFCNear Field Communication
    Close verification (approx 4cm) thru:
    RFID or Wi-Fi
    Used for:
    payment systems
    send data between phones "bump"
  129. 129RFIDRadio Frequency Identification
  130. 130IRInfrared
    TV remote uses infrared light.
    Infrared Data Association (IrDA).
    Line of Sight Required.
    10 to 16 Mbps data transfer rates.
    3 feet range.
  131. 131Diffused InfraRedIs different to regular IR.
    Does not require Line of sight.
    Range no larger than a room.
  132. 132IR Advantages*data speeds 10-16 Mbps
    * Use less speeds
    *Secure Medium. Direct line. Short Range. Hard to eavesdrop or signal tamper.
    *No RFI (interference)
    *Replaces cables in keyboards, mice, other peripherals.
    *Direct Line-of-sight transmission (or diffused)
  133. 133RFIDRadio Frequency Identification
    Supplies power to unpowered and passive electronic tag using
    Radio Waves.
    Identification, Authentication and Tracking.
    Proximity Reader
    13.56 MHz smart cards
    125kHz proximity cards
    Turnstyles, Gates, physical security safeguards.
  134. 134802.11They all use CSMA/CA
    Carrier Sense Multiple Access / Collision Detection
  135. 135FHSSFrequency Hopping Spread Spectrum
    A method of data travelling through the RF medium
  136. 136DSSSDirect Sequence Spread Spectrum
    A method of data travelling through the RF medium
  137. 137IEEE 802.11aSpeeds up to 54 Mbps
    5GHz band
    6 Mbps, 12 Mbps or 24 Mbps
    Compatible with 802.11b and 802.11g
  138. 138IEEE 802.11bMax speed 11 Mbps
    1, 2 and 5.5 Mbps
    2.4 GHz
    Compatible with 802.11g
  139. 139IEEE 802.11gDistance - 150ft
    Max Speed - 54 Mbps
    Freq - 2.4 GHz
    Compatible - 802.11b
  140. 140IEEE 802.11nMax speeds - 600 Mbps (theoretical)
    Freq - 2.4 and 5 GHz
    MIMO introduced
  141. 141IEEE 802.11acAn extension of 802.11n
    Devices must support both 802.11n and 802.11a
    500 Mbps with one link
    1.3 Gbps with multiple links.
    5GHz only
    Up to 8 MIMO streams
    up to 4 MU-MIMO
  142. 142MIMOMultiple Input Multiple Output
    Antenna Technology
    Uses multiplexing - combines multiple signals for transmission over a single line.
    Channel Bonding doubles data rate. 2 channels used at same time.
  143. 143OFDMOrthogonal Frequency Division Multiplexing
    802.11n transmission strategy
  144. 144802.11ac channle bandwidth80MHz
    It supports, 20MHz, 40, 80 and 160 MHz
  145. 145802.11 channel bandwidth20 MHz
  146. 146802.11n Channel Bandwidth40 MHz
  147. 147—
  148. 148Spread Spectrum - Frequency Hopping - Direct Sequencethe manner data signals travel thru radio frequency.
    Datasignals alternate between carrier freqs
    OR
    constantly change their pattern.
    Increase reliability, integrity, security
  149. 149Narrowband TransmissionData travels thru single RF band in a straight line.
  150. 150FHSSFrequency Hopping Spread-Spectrum
    Data signals switch between RF bands.
    Strong resistance to interference.
  151. 151BWABroadband Wireless Access
  152. 152DSSSDirect-Sequence Spread-Spectrum
    Spread over full transmission frequency spectrum.
    For every bit sent, a redundant bit also sent
    32-bit pattern called a chip.
    Provide: Security and Delivery Assurance.
  153. 153OFDMOrthogonal Frequency-Division Multiplexing
    Transfers large amounts of data over 52 separate, evenly spaced frequencies.
    Reduces crosstalk.
    Multiuser vesion is
    OFDMA
    Orthogonal Frequency Division Multiple Access
  154. 154You are installing a wireless network solution, and you require a standard that can operate using either 2.4 GHz or 5 GHz. Which of the following standards would you choose? a) 802.11a b) 802.11b c) 802.11g d) 802.11n e) 802.11acd) 802.11n
  155. 155You are installing a wireless network solution that uses a feature known as MU-MIMO. Which wireless networking standard are you using? a) 802.11a b) 802.11b c) 802.11n d) 802.11acd) 802.11ac
  156. 156—

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CompTIA Network+ Flashcards on CompTIA Network+ - Ch_1, created by Amber Saxon on 25/05/2020.
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