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53 Cards in this Set

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OSI Layer Review:Which layer provides an interface for a service to operate
Application
OSI Layer Review:What protocols does the application layer use.
http,telnet,ftp,tftp,snmp
OSI Layer Review:What layer provides data format, encryption,translation and compression
Presentation
OSI Layer Review:What protocols file formats operate at the presentation layer.
jpeg, bmp, tiff, mpeg,ascii,wav
OSI Layer Review:What layer keeps data streams separate using session id and sets up tears down and maintains sessions
session layer
OSI layer review: What protocols are used at the session layer
sql, x window, asp, nfs, rpc
OSI Layer Review: what layer provides reliable and unreliable communications, end to end flow control, port and socket numbers and segmentation/sequencing/combination
transport
OSI Layer Review: What protocols are used at the transport layer
tcp, udp
OSI Layer Review: What layer provides logical addressing,path determination and the routing of packets
network
OSI Layer: Which layer is concerned with moving bits across the media, cables, connectors and pin positions
physical
OSI Layer: Which layer is concerned with the physical topology of the network
physical
define:encapsulation
the process of breaking a message down into packets, adding information and transmitting the message through the media.
define: physical topology
the mapping of nodes of a network and the physical connections between them, such as the layout of wiring cables and nodes
define:logical topology
is the way messages are sent through a network
Ethernet supports what topologys?
physical bus, logical bus
physical star, logical bus
physical star, logical star
ethernet uses csma/cd to control access to what?
transmission medium
cat3 is rated to
cat4 is rated to
cat5 is rated to
cat 5e is rated to
10Mbps
16Mbps
100Mbps
1000Mbps
4 fiber optic cable connectors are
st,sc,lc, mt-rj
what is the size range of an ethernet frame
64-1518
what are max segment lengths for the following ethernet standards
10Base5
10Base2
10BaseT
500m
185m
100m
maximum segment lengths for each ethernet standard
10base5
10base2
10baseT
500 meters
185meters
100 meters
maximum segment lengths for each ethernet standard
100BaseTX
100BaseT4
100BaseFX
100m
100m
412m
What is thte datalink layer physical device address?
mac address
True or False:The mac address is guaranteed to be unique
True
The mac address is in what base and how many digits is it?
12 digit and it is a hexadecimal number.
To solve the half duplex issue networks now use ____ _____ cable.
twisted pair
To eliminate collisions network commonly deploy what?
switches.
Fill in the blank:Bridges connect two media _______ that use the same protocol.
segments
How does a bridge determine whic media segment a network device resides?
Examines the source address in the frame.
What layer in the OSI model does a bridge reside.
datalink layer
Fill in the blank:A bridge uses a table to track device _____ and their corresponding ______.
addresses,segment
True or False:Bridges waste bandwidth by allowing unnecessary traffice between network segments.
false
Bridges can foward packets for multiple upper layer protocols.
true
true or false:bridges filter broadcast traffic
false
true or false:bridges can translate upper layer protocols
false
bridges can forward traffic packets to different networks based on the network address
false
what is the 80/20 rule for bridges
80% of network traffic should stay within a segment.
fill in the blank: A switch is a multiport ______.
bridge
How does a switch make packet forwarding decisions?
It uses a mac address table to maintain packet forwarding information.
True or False:switches enable full duplex communication.
true
What are the contents of the forwarding database maintained by a bridge or switch
the mac address of a device and the port it is connected to.
True or False:the forwarding database in a switch is built automatically.
true
fill in the blank:When a switch recieves a packet it examines the forwarding database, if the destination address is present the packet is ______ to the correct port.
fowarded
fill in the blank:When a switch recieves a packet it examines the forwarding database, if the destination address is not present the packet is ______ to all ports except the one it is received on.
flooded
Describe the Store and Forward switching method.
Receive the entire frame, verify frame integrity CRC,Forward the frame.
Corrupt frames are not forwarded
True or False:Store and forward switching method introduces latency.
True
Describe the cut through switching method
read the destination device address in the frame, forward packet without verifying integrity.
True or false:The cut through switching method is faster than store and forward?
true
Describe the Fragement Free switching method?
read first 64 bytes, verify packet is not a fragment,forward non-fragmented frames.
true or false:Fragment free switching method is faster than store and foward?`
true.
Fill in the blank: A router is a device that sends_____ from one network to another.
packets
What are 6 things that are tracked in a routing table?
addresses of all known networks.
interface
routing path
next hop
route metric
route timeout
What 3 things do routing protocols determine.
What info is in the routing table.
How messages are routed from one network to another.
How topology changes are communicated between routers.