No Acknowledgment
What is UDP No Acknowledgment?
UDP is a connectionless protocol that does not provide acknowledgments for received packets, meaning it sends data without confirming delivery.
Why is UDP No Acknowledgment useful?
It reduces communication overhead and latency, making UDP ideal for applications where speed is more important than guaranteed delivery.
How does UDP achieve No Acknowledgment?
UDP sends packets as datagrams without establishing a connection or waiting for confirmation, eliminating retransmissions and acknowledgment delays.
Where is UDP No Acknowledgment used?
Commonly used in real-time applications like live streaming, online gaming, and VoIP where timely delivery matters more than reliability.
Which OSI layer does UDP No Acknowledgment belong to?
UDP operates at the Transport Layer (Layer 4) and inherently does not use acknowledgments.
Is UDP No Acknowledgment Windows specific?
No, UDP no acknowledgment behavior is standard across all major operating systems.
Is UDP No Acknowledgment Linux specific?
No, it is universally supported as part of the UDP protocol in all OS network stacks.
Which Transport Protocol uses No Acknowledgment?
UDP (User Datagram Protocol) inherently sends data without acknowledgments.
Is UDP No Acknowledgment using client-server model?
Yes, UDP communication often follows a client-server model but without acknowledgment mechanisms.
In this section, you are going to learn
Terminology
Version Info
setup
No Acknowledgment - Testcases
S.No |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Send Packet |
Transmit UDP packet |
No ACK expected |
2 |
Receive Packet |
Receive UDP packet |
No ACK sent |
3 |
Packet Loss |
Drop packet |
No retransmission or ACK |
4 |
Packet Duplication |
Duplicate packet |
No ACK, both packets received |
5 |
Packet Reordering |
Reorder packets |
No ACK, order not guaranteed |
6 |
No Handshake |
Start communication |
No setup or ACK |
7 |
Stateless Server |
Server receives packet |
No session or ACK |
8 |
Stateless Client |
Client sends packet |
No ACK expected |
9 |
Broadcast Packet |
Send to all nodes |
No ACK from receivers |
10 |
Multicast Packet |
Send to group |
No ACK from group members |
11 |
Unicast Packet |
Send to one host |
No ACK from receiver |
12 |
Port Unreachable |
Send to closed port |
ICMP error may be returned, no ACK |
13 |
Packet with Delay |
Delay packet delivery |
No ACK, delay tolerated |
14 |
Packet with Jitter |
Vary packet timing |
No ACK, jitter handled |
15 |
Packet with Loss |
Drop packet randomly |
No ACK or retry |
16 |
Packet with Duplication |
Send same packet twice |
No ACK, both may be processed |
17 |
Packet with Reordering |
Change packet order |
No ACK, receiver handles |
18 |
Packet with TTL Expiry |
TTL expires mid-route |
No ACK, packet discarded |
19 |
Packet with Invalid Checksum |
Corrupt checksum |
Packet dropped, no ACK |
20 |
Packet with Valid Checksum |
Correct checksum |
Packet accepted, no ACK |
21 |
Packet to Invalid IP |
Send to wrong address |
No ACK, packet lost |
22 |
Packet to Valid IP |
Send to correct address |
Packet received, no ACK |
23 |
Packet to Closed Port |
Send to unused port |
ICMP error possible, no ACK |
24 |
Packet to Open Port |
Send to listening port |
Packet processed, no ACK |
25 |
Packet Flooding |
Send rapid packets |
No ACK, possible loss |
26 |
Packet Logging |
Log incoming packets |
No ACK logged |
27 |
Packet Monitoring |
Monitor traffic |
No ACK observed |
28 |
Packet Filtering |
Apply firewall rules |
No ACK, packet blocked or allowed |
29 |
NAT Traversal |
Send through NAT |
No ACK, packet forwarded |
30 |
VPN Routing |
Send over VPN |
No ACK, packet tunneled |
31 |
Proxy Routing |
Send via proxy |
No ACK, proxy forwards |
32 |
IPv6 Support |
Send over IPv6 |
No ACK, packet transmitted |
33 |
IPv4 Support |
Send over IPv4 |
No ACK, packet transmitted |
34 |
DNS Query |
Send DNS request |
Response received, no ACK |
35 |
VoIP Packet |
Transmit voice packet |
No ACK, real-time delivery |
36 |
Video Stream |
Send video over UDP |
No ACK, stream continues |
37 |
Game Packet |
Send game data |
No ACK, real-time update |
38 |
UDP Hole Punching |
Establish peer-to-peer |
No ACK, connection setup |
39 |
UDP Broadcast |
Send to all devices |
No ACK expected |
40 |
UDP Multicast |
Send to group |
No ACK expected |
41 |
UDP Unicast |
Send to one device |
No ACK expected |
42 |
Packet Fragmentation |
Fragment large packet |
No ACK, reassembly at receiver |
43 |
Packet Reassembly |
Reassemble fragments |
No ACK, data reconstructed |
44 |
Logging Disabled |
No packet logs |
No ACK observed |
45 |
Logging Enabled |
Log packet timestamps |
No ACK logged |
46 |
Packet Timestamping |
Add timestamps |
No ACK, timestamps used for analysis |
47 |
Packet Prioritization |
Prioritize UDP packets |
No ACK, priority respected |
48 |
QoS Enabled |
Apply QoS rules |
No ACK, faster delivery |
49 |
QoS Disabled |
No prioritization |
No ACK, standard delivery |
50 |
Stress Test |
High volume, no ACK |
System handles load without ACKs |
Reference links