Network +

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Author:
krisirene
ID:
216818
Filename:
Network +
Updated:
2013-04-30 18:34:02
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network
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Description:
N10-005 exam
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  1. What are the 7 layers of the OSI Model?
    • Layer 7 - Application
    • Layer 6- Presentation
    • Layer 5 - Session
    • Layer 4 - Transport
    • Layer 3 - Network
    • Layer 2 - Data Link
    • Layer 1 - Physical
  2. What are the 4 layers of the TCP/IP model?
    • Application Layer
    • Transport Layer
    • Internet Layer
    • Network Interface Layer (also link layer)
  3. What layer of the OSI model does the MAC address operate at?
    Layer 2 - Data Link
  4. What layer of the OSI model does the IP address operate at?
    Layer 3 - Network
  5. What layer of the OSI model does EUI-64 operate at?
    Layer 2 - Data Link
  6. What layer of the OSI model do Frames operate at?
    Layer 2 - Data Link
  7. What OSI layer do packets operate at?
    Layer 3 - Network
  8. What layer of the OSI model does a switch function at?
    Layer 2 - Data Link
  9. What layer of the OSI model does a router operate at?
    Layer 3 - Network
  10. What layer of the OSI model does a multilayer switch function at?
    Layer 2 Data Link and Layer 3 Network
  11. What layer of the OSI model does a hub operate at?
    Layer 1 - Physical
  12. What layer of the OSI model do encryption devices operate at?
    Layer
  13. What layer of the OSI model does a cable operate?
    Layer 1 - physical
  14. What layer of the OSI model does a NIC operate?
    layer 1 - physical
  15. What layer of the OSI model does a bridge operate at?
    Level 2 - data link
  16. How many bits is a IPv4 address?
    32 bits
  17. What is the range of the first octect for a class A address?
    0-127
  18. What is the range of the first octect for a class B address?
    128-191
  19. What is the range of the first octect for a class c address?
    192-223
  20. What are class D addresses used for?
    multicasting
  21. How many bits are in a IPv6 address?
    128 bits
  22. What is the address range of an APIPA address?
    169.254.x.x
  23. What is CIDR?
    classless inter-domain routing
  24. What are private address ranges?
    • 10.0.0.0-10.255.255.255
    • 172.16.0.0-172.31.255.255
    • 192.168.0.0-192.168.255.255
  25. What is a unicast address?
    sends information to one system.
  26. What is a broadcast address?
    sends information to all systems on the network
  27. what is a multicast address?
    sends information to a selected group of systems
  28. in IPv6 what is a global unicast address?
    public address that is routable on the internet and is the equivalent to a public ip address in IPv4
  29. In IPv6 what is a site-local unicast address?
    a private address and is similar to a private address in IPv4 and used for local communication only.  A IPv6 site local unicast address always starts with FECo
  30. In IPv6 what is a link-local address?
    similar to an APIPA address in IPv4 and can ony be used to communicate with other nodes on the link.  A link-local unicast address starts with FE8o
  31. What is EIGRP?
    • Enhanced Interior Gateway Protocol
    • shares routing table information with other routers located inside your network
  32. What is OSPF?
    Open shortest path first is a link state protocol. has an unlimited hop count, can share between dissimilar routers and supports VLSM
  33. what is RIP?
    routing information protocol.  it is distance vector and responsible for sharing its routing table information with neighboring routers by broadcasting the information over UDP every 30 seconds
  34. what are distance vector protocols?
    routing protocols that measure the best route to use based on the lowest hop count examples are RIP and IGRP
  35. What is a link state protocol?
    link state protocols monitor the state of the link between routers.  The link state is then used to determine the optimal route to a destination network. OSPF and IS-IS are examples of link state protocols
  36. What is a hybrid protocol?
    combines distance vector and link state protocol traits.  An example of a hybrid protocol is EIGRP, supports VLSM, IPv4 and IPv6 and has a max hop count of 255  hops
  37. What is the command on a cisco router to add a static route?
    ip route
  38. What is the command on a cisco router to display the routing table?
    show ip route
  39. What is the command for displaying the routing table of your local system?
    route print
  40. In windows to add a route what command do you use?
    route add
  41. What is convergence?
    also known as steady state, is when the routes on each router are shared with all other routers and merged into each router's routing table.
  42. What are 4 routing metrics used when placing values of a route?
    • hop count
    • MTU or bandwidth
    • Costs
    • Latency
  43. What is IGP?
    interior gateway protocol, shares routing table information with other routers located inside your network
  44. What is EGP?
    exterior gateway protocol and shares routing tables to routers outside of your network.
  45. What is port mirroring?
    also known as port monitoring. It is a feature that allows the switch to send a copy of data that reaches certain ports to the mirrored or monitored port.
  46. What is 802.1q?
    When a switch assigns the VLAN identification information to a packte, this is known as tagging.  Two protocols used for tagging are 802.1q and ISL.  ISL is the cisco branded protocol while 802.1q is the IEEE standard for VLAN trunking
  47. What is STP?
    spanning-tree protocol runs at layer 2 and is designed to prevent loops on a network that could occur if you connect a number of switches together.
  48. What port does SMTP use?
    port 25
  49. What port does HTTP use?
    port 80
  50. what port does HTTP use?
    port 443
  51. What ports does FTP use?
    ports 20,21
  52. What port does TELNET use?
    port 23
  53. What port does IMAP use?
    port 143
  54. What port does RDP use?
    port 3389
  55. What port does SSH use?
    port 22
  56. What port does DNS use?
    port 53
  57. What ports does DHCP use?
    ports 67,68
  58. What are the 8 steps to troubleshooting?
    • identify the problem
    • establish a theory or probable cause
    • test the theory to determine the cause
    • establish a plan of action to resolve the problem and identify potential effects
    • implement the solution or escalate as necessary
    • verify full system functionality and if applicable implement preventative measures
    • document findings, actions and outcomes
  59. What is the difference between NAT, PAT and SNAT?
    SNAT is when you have private addresse inside the network translated to a single public IP address and creates a one-to-one mapping. PAT is when you overload the public address with multiple private addresses, the port address translation (PAT).
  60. what is VTP?
    VLAN trunking protocol developed by Cisco that allows a network administrator to create a list of VLANs on one switch and then have the list of VLANs delivered to other switches within the VTP domain.  It is a management protocol.
  61. What is packet switching?
    The process of breaking a transmission down into multiple packets, each potentially taking a different route to the destination network.  The packets can be received out of order and are assembled at the destination.
  62. What are the properties of ATM?
    • circuit-switching
    • uses packets size of 53 bytes called a cell
    • WAN technology
    • 622 Mbps
    • good for voice or video
  63. What is SONET?
    • Synchronous Optical Network
    • North American Standard
    • Fiber
    • SHD is the European standard for SONET
  64. What is the SDH Level and Bandwidth for STS-1?
    • level:  none
    • 51.84 Mbps
    • OC-1
  65. What is the SDH Level and Bandwidth for STS-3?
    • level:  STM-1
    • 155.52 Mbps
  66. What is the SDH Level and Bandwidth for STS-9?
    • level:  STM -3
    • 466.56 Mbps
  67. What is the SDH Level and Bandwidth for STS-12?
    • level: STM-4
    • 622.08 Mbps
  68. What is the SDH Level and Bandwidth for STS-18?
    • STM-6
    • 933.15 Mbps
  69. What is the SDH Level and Bandwidth for STS-24?
    • Level: STM-8
    • 1244.16 Mbps
  70. What is the SDH Level and Bandwidth for STS-36?
    • level: STM-12
    • 1866.24 Mbps
  71. What is the SDH Level and Bandwidth for STS-48?
    • level STM-16
    • 2488.32 Mbps
  72. What is the SDH Level and Bandwidth for STS-96?
    • level: STM-32
    • 4976.64 Mbps
  73. What is the SDH Level and Bandwidth for STS-192?
    • level: STM-64
    • 9953.28 Mbps
  74. What is DWDM?
    dense wavelength division multiplexing is a technology to increase the bandwidth over existing fiber-optic cabling
  75. What is PON?
    Passive Optical Network, is a technology involving the service provider installing a splitter at their location to split a single-fiber link to multiple customer locations
  76. What is X.25?
    packet switched network that uses a devices called a packet assembler/dissembler (PAD) to connect a system to the x.25 network.  The PAD connects to serial ports of a device and is therefore considered RS-232 compliant transfer rates of 2 Mbps
  77. What is Frame Relay?
    digital version of x.25. Runs at layers 1 and 2 of the OSI with transfer rates up to 50 Mbps and has QoS
  78. What is FDDI?
    uses a fault-tolerant ring topology and fiber optic cabling of speeds of 100 mbps or more
  79. What is the bandwidth of a T1?
    1.544 Mbps
  80. What is the bandwidth of a T3?
    44.736 Mbps
  81. What is POTS/PSTN?
    plain old telephone service/public switched telephone network provides access through conventional telephone lines using a modem to recieve transfer rates of 56 kbps
  82. What is HSPA+?
    Evolved High-Speed Packet Access is a broadband solution based on wireless technology.  Offers broadband speeds of 84 Mbps downloads and 22 Mbps uploads
  83. What is WiMax?
    microwave. old version runs at 40 Mbps and the 2011 version is expected to run at 1 Gbps
  84. What is LTE?
    Long Term Evolution.  wireless technology designed to give broadband services to mobile users through the phone.  100 Mbps
  85. What are the specifications of 10BaseT?
    • Star
    • Cat 3
    • 10 Mbps
  86. What are the specifications of 100BaseT?
    • Star
    • Cat 5
    • 100 Mbps
  87. What are the specifications of 1000BaseTX?
    • Star
    • Cat 5, 5e 6
    • 1 Gbps
  88. 1000BaseSX
    • MMF
    • 550 meters
    • 1 Gbps
  89. 1000BaseLX
    • SMF
    • 3km
    • 1 Gbps
  90. What is IEEE 802.3z
    1000BaseX 1 Gbps Fiber
  91. 1000BaseCX
    • Coax
    • 1 Gbps
    • Coax
  92. IEEE 802.3b
    1000BaseT defines GB ethernet over twisted pair
  93. 10GBaseSR
    • short range
    • MMF
    • 100 meters
    • 10 Gbps
  94. 10GBaseLR
    • long range
    • SMF
    • 10 km
    • 10 GB
  95. 10GBaseER
    • extra long range
    • SMF
    • 40 km
    • 10 Gbps
  96. 10GBaseT
    • Cat 6
    • 100 meters
    • 10 Gbps
  97. 10GBaseSW
    • SONET
    • short range
    • MMF
    • 100 meters
  98. 10GBaseLW
    • SONET
    • long range
    • SMF
    • 10km
  99. 10GBaseEW
    • SONET
    • extended range
    • SMF
    • 40 km

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