Which three statements describe the User Datagram Protocol (UDP)?（）A、UDP provides delivery notification and error checking mechanisms.B、UDP is faster than the Transmission Control Protocol (TCP).C、UDP application examples include DNS and VoIP.D、UDP is an

A. SIP (port 626)

B. TCP (port 646)

C. UDP (port 606)

D. IP (protocol code LDP)

A.TCP is a transport layer protocol.

B.TCP is faster than the User Datagram Protocol (UDP).

C.TCP provides delivery notification and error checking mechanisms.

D.TCP uses a best effort delivery approach.

E.TCP application examples include HTTP and SMTP.

A.DNS-Dynamic Naming Service

B.UDP-User Datagram Protocol

C.DHCP-Dynamic Host Configuration Protocol

D.TFTP-Trivial File Transfer Protocol

A. UDP is faster than TCP

B. UDP operates at the Transport Layer

C. UDP is connection-oriented

D. UDP data is sent best-effort

E. UDP is more reliable than TCP

A.UDP provides delivery notification and error checking mechanisms.

B.UDP is faster than the Transmission Control Protocol (TCP).

C.UDP application examples include DNS and VoIP.

D.UDP is an application layer protocol.

E.UDP uses a best effort delivery approach.

A. limited error checking

B. defined timers

C. no recovery mechanisms

D. three-way handshake

● TCP/IP （71） layer protocols provide services to the application （72） running on a computer. The application layer does not define the application itself, but rather it defines （73） that applications need—like the ability to transfer a file in the case of HTTP. In short, the application layer provides an （74） between software running on a computer and the network itself. The TCP/IP application layer includes a relatively large number of protocols, with HTTP being only one of those. The TCP/IP （75） layer consists of two main protocol options—the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP).