Term
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Definition
a. Simple, datagram-oriented, transport layer protocol.
b. Doesn't provide:
i. Error correction
ii. sequencing
iii. duplicate elimination
iv. flow control
v. congestion control |
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Term
| Describe the UDP header format. |
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Definition
a. 2-byte source port number.
b. 2-byte destination port number.
c. 2-byte length field - header & payload in bytes.
d. 2-byte checksum field.
e. variable payload (if any). |
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Term
| What are invalid values for the UDP Length field? |
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Definition
| 1-7. The minimum value for IPv4/UDP is 8 (header only). 0 can be used for IPv6/UDP jumbograms. |
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Term
| Describe the UDP Checksum. |
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Definition
a. End-to-end.
b. Not modified in transit, unless NAT'd.
c. Optional IPv4, mandatory IPv6.
d. Covers UDP header, UDP data and pseudo header. |
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Term
| List the IPv4 fields used in the 12-byte IPv4/UDP Checksum pseudo header. |
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Definition
a. source IP address
b. destination IP address
c. Protocol number (17) |
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Term
| List the IPv6 fields used in the 40-byte IPv6/UDP Checksum pseudo header. |
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Definition
a. source IP address
b. destination IP address
c. next header field (17) |
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