Which of the following protocols handles the reliable delivery of data?
A.
TCP
B.
ARP
C.
IPX
D.
UDP
Explanation:
TCP handles the reliable delivery of data.
Transmission Control Protocol (TCP) is a reliable, connection-oriented protocol operating at the
transport layer of the OSI model. It provides a reliable packet delivery service encapsulated within
the Internet Protocol (IP). TCP guarantees the delivery of packets, ensures proper sequencing of
data, and provides a checksum feature that validates both the packet header and its data for
accuracy. If the network corrupts or loses a TCP packet during transmission, TCP is responsible for
retransmitting the faulty packet. It can transmit large amounts of data. Application-layer protocols,
such as HTTP and FTP, utilize the services of TCP to transfer files between clients and servers.
Answer option D is incorrect. User Datagram Protocol (UDP) is often used for one-to-many
communications, using broadcast or multicast IP datagrams. Microsoft networking uses UDP for
logon, browsing, and name resolution. UDP is a connectionless and unreliable communication
protocol. It does not guarantee delivery, or verify sequencing for any datagram. UDP provides faster
transportation of data between TCP/IP hosts than TCP.
Answer option C is incorrect. Internetwork Packet Exchange (IPX) is the OSI-model Network layer
protocol in the IPX/SPX protocol stack. It is a connectionless protocol.
Answer option B is incorrect. Address Resolution Protocol (ARP) is a network maintenance protocol
of the TCP/IP protocol suite. It is responsible for the resolution of IP addresses to media access
control (MAC) addresses of a network interface card (NIC). The ARP cache is used to maintain a
correlation between a MAC address and its corresponding IP address. ARP provides the protocol
rules for making this correlation and providing address conversion in both directions. ARP is limited
to physical network systems that support broadcast packets.
Reference. “http.//en.wikipedia.org/wiki/Transmission_Control_Protocol”