How exactly does ARQ (automatic repeat request) work?
Dec 23, 2021 · As I understand it, ARQ is an error-checking method, which my textbook attempts to explain it as: ARQ uses an acknowledgement (a message sent by the receiver indicating that the data has been reci...
Why is ARQ (Automatic Repeat reQuest) named so?
I can't make sense of a naming for Automatic Repeat reQuest. The idea is that ARQ is a method for transmitting data without negative ACKs, so standard ARQ flow is: Sender sends a packet; If sender doesn't receive an ACK in, e.g., 3 seconds, it timeouts (automatic?), and repeats the sending of the packet.
Where does the "Reliable Data Transfer" (RDT) concept come from?
Dec 2, 2022 · Now, as I said, the schemes like stop-and-wait, go-back-n, and selective repeat are more or less universally known. Their origins are most likely from these works. Also, an ARQ (Automatic Repeat reQuest) is also common term to describe these schemes. The "version numbers" of reliable data transfer protocols are again AFAIK from the book by Kurose.
NACK vs. ACK? When to use one over the other one?
Mar 20, 2014 · If you were to NAK instead, you will become dependent on the traffic pattern: - If you send a single request packet and expect an answer, and that request is lost, you will have to have a timeout that expires if you do not get an answer.
What kind of data can be considered a Payload?
Mar 2, 2018 · I am taking a networking class, and I understand that payload data is part of a packet (within TCP or UDP), that is actual data that is being sent from the sender to the recipient.
TCP and Go-Back-N - Network Engineering Stack Exchange
With Selective Repeat (SR): Once R receives pkt1, it will send an ACK for it. Once it receives pkt3, it will send an ACK specifically for this packet too and will NOT drop the packet even though pkt3 is out-of-order (it will buffer it). Eventually, pkt2 will timeout on the sender's end, so the sender will retransmit pkt2. If it's successful the ...
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routing - TCP and internal packet retransmission - Network …
Jan 4, 2019 · When point A sends data to point B, it's delivered reliably over TCP. If the underlying channel loses data, the TCP stack on point B side automatically asks to re-transmit lost frames. Let's assume
ipv4 - Duplicate IP Address - which one wins? - Network …
Mar 19, 2018 · So the last host to answer (or have answered) an ARP request will "win". This competition will be held for every new host that wants to communicate with the duplicate IP. You could rig the competition by regularly sending gratuitous ARPs.
cisco asa - Network Engineering Stack Exchange
ROUTER CONFIG crypto pki certificate map CA 1 issuer-name co *** crypto ikev2 proposal IKEV2-PROP encryption 3des integrity sha1 group 2 5 crypto ikev2 policy IKEV2-POL proposal IKEV2-PROP crypto ikev2 profile IKEV2-PROF match certificate CA match identity remote address 65.32.147.253 255.255.255.255 authentication local rsa-sig authentication remote rsa …