Transport layer services

Question 1

What transport service does an app need?

Answer 1

It depends on the apps data loss, needed bandwidth and needed timing

Question 2

What transport services does file transfer, e-mail and web documents need?

Answer 2

No loss, elastic bandwidth and no time sensitive

Question 3

What transport services does real time audio/video and stored audio/video need?

Answer 3

loss tolerant, audio bandwidth: 5kbps - 1Mbps video bandwidth: 10 kbps-5Mbps. yes to time sensitivity

Question 4

What are the features of TCP service?

Answer 4

Connection oriented
Reliable transport
Flow control
Congestion control

Question 5

What does TCP service not provide?

Answer 5

Timing
Minimum bandwidth guarantees

Question 6

What are the features of UDP service?

Answer 6

Unreliable data transfer between sending and receiving process

Question 7

What does UDP service not provide?

Answer 7

Connection setup
Reliability
Flow control
Congestion control
Timing
Throughput guarantees

Question 8

What application uses SMTP and TCP?

Answer 8

E-mail

Question 9

What application uses Telnet and TCP?

Answer 9

Remote terminal access

Question 10

What application and transport protocols does Web application use?

Answer 10

HTTP and TCP

Question 11

What application uses FTP and TCP?

Answer 11

File transfer

Question 12

What application and transport protocols does Internet telephony (VoIP) use?

Answer 12

Session Initiation Protocol (SIP) and typically UDP