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24 Cards in this Set
- Front
- Back
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What are the characteristics of a connection-oriented service? |
-virtual circuit (3-way-handshake) -sequencing -acknowledgements -flow control |
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At what layer does flow control function? |
Layer 4: Transport Layer 2: Data Link |
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What types of flow control are there? |
buffering, windowing, and congestion avoidance |
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At what layer are communication resources and availability identified? |
Layer 7: Application |
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At what layer is data translated into a standard format, often with encryption or compression? |
Layer 6: Presentation |
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At what layer does dialogue control manage the association of data to applications and devices? |
Layer 5: Session |
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What are the steps to create a connection-oriented virtual circuit? |
1: sender request synchronization (SYN) 2: recipient acknowledge the request and set connection parameters (SYN/ACK) 3: sender acknowledge acceptance (ACK) |
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What is a transmission window? |
the segment of data in bytes allowed to send without acknowledgement from the recipient |
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At what layer does session multiplexing manage the association of data to applications and devices? |
Layer 4: Transport |
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At what layer does logical addressing, routing, and location tracking function? |
Layer 3: Network |
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What does a router do if it does not have an entry for a packet's destination network? |
drop the packet |
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What types of packets are used at the network layer? |
data and route update
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What are the three primary pieces of information kept in a routing table? |
address, interface, metric |
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At what layer is hardware addressing used for data transmission? |
Layer 2: Data Link |
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What control defines how packets are placed on physical media? |
media access control |
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What control identifies and encapsulates network layer protocols? |
logical link control |
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What kind of table maps hardware addresses to ports? |
filter table |
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What functionality maintains that frames are only sent to the segment where the destination hardware address is located? |
transparent bridging |
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How many collision domains does a switch create? |
one per port |
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How many broadcast domains does a switch create? |
one by default with a single default vlan |
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What are possible causes of network congestion? |
-too many hosts in a broadcast domain -broadcast storms -multicast -low bandwidth |
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What is the difference between a collision domain and a broadcast domain? |
all devices in a collision domain will hear all traffic of all kinds sent in their segment; devices in a broadcast domain will only hear all traffic that is broadcast traffic in their segment |
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What are the functions of routers? |
-packet switching -filtering -path selection -internetwork communication |
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By default, routers will not forward what type of packets? |
broadcast, multicast |
