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Why is UDP considered unreliable?
Routers Drop a lot of UDP packets
What is an important characteristic of UDP?
UDP is much simpler than TCP. UDP does not do any sort of handshaking, connection establishment, or acknowledgements for received packets. UDP packets are simply sent over the network with no expectation of a return message. Since there are no methods for acknowledging that a packet has been received within UDP, there is no guarantee of the order in which packets will arrive. Sometimes, they may be lost all together. UDP is not the most reliable protocol within the IP suite, but it does have several important uses.Q. Which is an important characteristic of UDP?Simply answer is A.) · minimal delays in data delivery.In other words there are minimal delays in the travel of data from the sender to the receiver.
When a client computer sends a request to a Domain Name System (DNS) server, what type of packet is sent?
DNS primarily uses the User Datagram Protocol (UDP) on port number 53 to serve requests. DNS queries consist of a single UDP request from the client followed by a single UDP reply from the server. When the length of the answer exceeds 512 bytes and both client and server support EDNS, larger UDP packets are used.
Explain the format of udp hearder udp message queqe?
. A Explain the overview of UDP messaging.
What is the difference between datagram and packet?
datagram is used in conectionless n/w e.g. UDP Whereas packets used in connection oriented n/w e.g. ATM X.25 tcp
Why is UDP considered unreliable?
Routers Drop a lot of UDP packets
Does smtp use tcp?
No it uses UDP packets.
Why would an application use UDP instead of TCP?
UDP does not require as much resources as TCP but in the same time, it does not insure delivery of packets.
What is an important characteristic of UDP?
UDP is much simpler than TCP. UDP does not do any sort of handshaking, connection establishment, or acknowledgements for received packets. UDP packets are simply sent over the network with no expectation of a return message. Since there are no methods for acknowledging that a packet has been received within UDP, there is no guarantee of the order in which packets will arrive. Sometimes, they may be lost all together. UDP is not the most reliable protocol within the IP suite, but it does have several important uses.Q. Which is an important characteristic of UDP?Simply answer is A.) · minimal delays in data delivery.In other words there are minimal delays in the travel of data from the sender to the receiver.
Are data packets only for emails?
If you mean TCP or UDP data packets, then no, they make up every data transmission on the net.
Which layer 4 protocol is used to transport voice packets in a VolP deployment?
UDP
Which Layer 4 protocol is used to transport voice packets in a VoIP deployment?
UDP - primarily for speed is used to transport voice packets in a VoIP deployment.
What is the largest data payload that packets on an Ethernet network can accept?
1500 Bytes
IP TCP and UDP all discard a packet that arrives with a checksum error and do not?
Only TCP will automatically discard a packet with a bad checksum. UDP packets have a checksum field, but it is rarely used, and then only by the application (not UDP itself)
Which protocol used by Web browsers and Web servers is responsible for breaking data into packets?
The correct answer is IP. IP is responsible for breaking data into packets and passing them from TCP or UDP to the hardware.
What is UDP session?
An UDP sesion is created on a computer when an application starts listening on a UDP port. So basicaly it goes like this Application says : "Hey OS, can you open port 45547 on interface X for me, I'm expecting some UDP packets on that port ?" OS says : "Sure. Here, just listenon this socket handle for any events." And then if any packets arrive from ANY IP in the world on interface X at port 45547, the application will be alerted through the given socket handle on which it listens.
Does TFTP have a check sum to see whether packets are corrupted?
Nope, TFTP Relys on the UDP Checksums, and even those are optional, that's why its not used often exept for Bootloaders etc. Also there is no Encryption for tftp packets
