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84 Cards in this Set
- Front
- Back
What does OSI stand for? As in OSI seven layer model
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Open Systems interconnection
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What are the 7 layers of the OSI 7 layer model in order?
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Layer 1 Physical
Layer 2 Data Link Layer 3 Network Layer 4 Transport Layer 5 session Layer 6 presentation Layer 7 Application |
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What does UDP stand for?
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Unshielded twisted pair
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Anything that moves data from one system to another, such as copper cabling, fiber optics even radio waves is part of the ___________ Layer, or the __#__ layer.
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Physical layer or the 1st layer
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The NIC is the ___________.
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Network interface Card
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The NIC operates on the ____________ layer which is layer #__________.
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Data link layer which is layer number 2.
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Every NIC contains a ____address.
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MAC
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What does mac Stand for, as in mac address.
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Media access control address
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A mac address is _____bits or ___ hex characters
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48 bits or 12 hex
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The first 6 digits of a mac address represent the number of _________________.
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The manufacturer
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What does OUI stand for? and what is it used for
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Organizationally unique identifier and it is used for mac addresses
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Which digits are the Device id?
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the last 6 digits of the mac address.
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Generally a single frame holes ____bytes.
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1500
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Frames are sent to ____ on the network.
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Everyone, but only the mac address that its addressed to receives it.
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The receiving system used ___________to verify that the data arrived intact.
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CRC Cyclic redundancy check
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The mac Address FF-FF-FF-FF-FF-FF is? and what does it do?
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The broadcast address, it sends out a frame requesting the other systems on the networks mac address and all the nic on the network reply
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Any device that deals with the mac address is part of the ________layer or # layer.
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Data link layer, or 2nd
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What is the LLC?
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Logical link controller
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What does the LLC do? t
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talks to the operating system, places data coming form the software into frames and creates the CRC on each frame. It is also responsible for incoming frames: processing the ones that are addressed to this NIC and erasing the ones that arent.
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The only layer that has sublayers is? and what are the sublayer?
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The data link layer has the sub layers LLC and the MAC.
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You can break a large network up into smaller networks called ___________.
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subnets
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What does TCP/IP stand for?
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Transmission control protocol/internet protocol
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An NIC's Logical address is its _____________.
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Ip address
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Anything that has to do with logical addressing work on the _____________layer or the # layer.
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Network layer or 3rd layer
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The _________layer is the last layer that deals directly with hardware.
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Network
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This layer has only one big job, it is the assembler/disassembler, it also initializes requests for packets that werent received in good order.
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The transport layer or layer 4
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What does layer 5 or the session layer do?
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The session layer initiates sessions, accepts incoming sessions, and opens and closes existing sessions.The session layer also keeps track of computer naming conventions.
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The ______ layer or # layer is incharge of converting data into formats that are readable by the system.
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Presentation layer or 6th layer
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Layer #, or __________layer, refers to the code built into all operating systems that enables network-aware applications.
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Layer 7 or application layer
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The way that cables and other pieces of hardware connect to one another.
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topology
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a single cable that connects all of the computers in a line is a _________ topology.
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Bus
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A _______topology connects all the computers on the network with a central ring of cable.
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Ring
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a network using bus topology needs a _______________ at each end of the cable to prevent a signal sent from one computer reflecting at the ends and creating unnecessary traffic
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termination
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Bus and ring topology worked well but suffered from the same flaw, which is.....
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The entire network stopped working if the cable broke at any point.
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_______topology uses a central connection for all computers on the network.
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Star
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Signalling topology is often known as ____________
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logical topology
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Any form of networking technology that combines a physical topology witha signalling topology is called a ______________________.
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Hybrid Topology
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Almost all wireless networks use 1 of 2 different topologies: __________ or _______________.
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Mesh or point to multi-point
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What is the formula for calculating the number of connections needed to make a fully meshed network given a certain number of computers.
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y(y-1)/2
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In a ____________topology a single system acts as a common source through which all members of the network converse.
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Point to multipoint
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In a _____________ topology 2 computers connect directly together with no need for a central hub or box of any kind.
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point-to-point
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All cables used in the networking industry can be catagoriezed in three distinct groups: ________,__________, and _________.
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Coaxial, twisted pair, and fiber optic.
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_____________cable contains a central conductor wire surrounded by an insulating material, which in turn is surrounded by a braided metal shield.
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Coaxial
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Cable modems usually connect using _______cable.
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RG6
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STP stands for
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Shielded twisted pair
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UTP stands for
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Unshielded twisted pair
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Cat ratings are officially rated in ___________ indicating the highest frequency the cable can handle
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Megahertz (MHz)
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The maximum amount of data that goes through the cable per second is called the _____________.
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Bandwidth
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Telephones use __________ connectors and networks use ____________connectors.
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Phones= RJ-11 Networks= Rj-45
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Fiber optic cables that use LEDs are known as _______.
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Multimode
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Fiber optics that use layers are known as _________
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single mode
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The 3 main connector types for fiber optics are:
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ST, SC. LC
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The IEEE 802.3 standard is for what?
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Ethernet
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The IEE 802.11 Standard is for what?
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Wireless LAN/WLAN/wifi
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An electronic repeater- it interprets the ones and zeros coming in from one port and repeats the same signal out to the other connected ports.
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Hub
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Frames can carry up to ________ bytes.
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1500
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The frame check sequence is ethernets term for ________.
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CRC
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What does csma/cd stand for?
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Carrier access, multiple access collision detection
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A properly running average ethernet network has a maximum of ______% collisions.
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10
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In the name 10Base T the 10 Refers to?
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The speed 10mbps
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In the name 10Base T the word Base Refers to?
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They signalling type, baseband
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In the name 10BaseT the T Refers to?
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The type of cabling used, twisted pair
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10BaseT introduced the networking world to the ____________connector.
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RJ45
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What are the two ways to connect Hubs?
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an uplink port of a Crossover cable
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___________ enable you to connect 2 hubs together using a straight through cable.
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uplink Ports
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To connect more than 2 hubs you must ____________ you hubs.
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Daisy chain
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You can not daisy chain more than _____hubs.
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4
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A __________ reverses the sending and receiving pairs on one end of the cable.
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Crossover
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When using a crossover cable never connect 2 hubs by ______________.
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Their uplink ports
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A ____________ acts like a repeater or hub to connect 2 ethernet segments, but it goes one step beyond - it filters and forwards traffic between those segments based on the mac addresses of the computers on those segments.
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Bridge
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Bridges operate on which lvl of the osi networking model?
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2, the data link layer
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Whats the difference between a switch and a hub?
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switches forward packets based on mac addresses. hubs forward the frame to everyone
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True or false: when you use switches instead of hubs you still need to worry about csma/cd?
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False
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True or False: you can connect switches however you want.
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true
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There are only 4 Ethernet speeds what are they?
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10 megabit, 100 megabit, 1 gigabit, 10 gigabit
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only 10- and 100 megabit Ethernet may use a __________. Gigabit and 10 gigabit must use a ___________.
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hub, switch
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10 Base t4 uses _________ cable.
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cat 3
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100 base tx uses _________ cable.
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cat 5
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100BaseFX uses ________ cable.
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fiberoptic
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Most installations will use _______ in a place where UTP wont cut it.
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Fiber optic
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1000basecx uses __________ cable.
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twinaxial
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SFF connectors are
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Small form factor
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The first SFF connector was the ____________.
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MT-rj
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The second most popular SFF connector is the _____.
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LC
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