Term
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Definition
connection oriented
1:1 communication
sequence of individual bytes
arbitrary length transfer
used by most apps
built on TCP protocol |
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Term
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Definition
connectionless
M:N communication
sequence of individual messages
each message limited to 65kbytes
used for multimedia apps
built on UDP protocol |
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Term
| General algorithm that connection oriented system uses |
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Definition
1. Paire of apps request a connection
2. pair uses the connection to exchange data
3. pair request connection to be terminated |
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Term
| When two applicants communicate over the internet, which one is the server? |
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Definition
| The server is the app that starts first and awaits contact |
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Term
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Definition
1. starts 1st and awaits contact
2. does not need to know which client will contact it
3. communicates with client by both sending and receiving |
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Term
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Definition
starts 2nd and initiates contact
must know which server to contact
initiates a contact whenever communication is needed
may terminate after interacting with a server |
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Term
| Can data flow from a client to server? |
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Definition
| Yes, communication can flow in with er direction |
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Term
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Definition
| 32 bit identifier for computer |
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Term
| List steps a client can use to contact a server after a user specifies a domain name for the server? |
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Definition
1. Use DNS to translate name to IP address
2. Specify that the service uses port N
3. Contact server and interact |
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Term
| Name 2 OS that offer the socket API |
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Definition
Microsoft windows systems
UNIV systems |
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Term
| What are the main features of socket API? |
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Definition
IP address of remote computer
Protocol Port #
whether app will act as a client or server |
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Term
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Definition
Pros-many functions with 3 or less parameters
Cons- programmers must remember to call multiple functions when using sockets |
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Term
| Sequence of socket calls used by client |
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Definition
| Connect, send receive, close |
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Term
| Sequence of socket calls used by a server |
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Definition
| Bind, listen, accept, receive, send, close |
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Term
| What socket functions do read and write correspond? |
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Definition
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Term
| Is sendto a stream or message? |
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Definition
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Term
| What are the two key aspects of application protocols? |
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Definition
Private Communication
Standardized Service |
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