Which of the following protocols is used to provide security for network traffic transmitted across a TCP/IP network?
A.
TCP
B.
IP
C.
IPSec
D.
UDP
Explanation:
IPSec is the primary security protocol used in TCP/IP networks. Internet Protocol security (IPSec) provides data protection during network communication. IPSec performs the following security functions.Authenticates the sender of IP data.
Ensures the integrity of the IP data.
Encrypts all data for full confidentiality.
Hides the originating IP addresses.IPSec can be configured for Authentication Header (AH) security and Encapsulating Security Payload (ESP) security.
Answer A, D, and B are incorrect. TCP, UDP, and IP are not security protocols. Fact What is TCP? Hide 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. Fact What is IP? Hide The Internet Protocol (IP) is a protocol used for communicating data across a packet-switched inter-network using the Internet Protocol Suite, also referred to as TCP/IP. IP is the primary protocol in the Internet Layer of the Internet Protocol Suite and has the task of delivering distinguished protocol datagram’s (packets) from the source host to the destination host solely based on their addresses. For this purpose the Internet Protocol defines addressing methods and structures for datagram encapsulation. The first major version of addressing structure, now referred to as Internet Protocol Version 4 (IPv4) is still the dominant protocol of the Internet, although the successor, Internet Protocol Version 6 (IPv6) is being deployed actively worldwide. Fact What is UDP? Hide User Datagram Protocol (UDP) is one of the core members of the Internet Protocol Suite, the set of network
protocols used for the Internet. With UDP, computer applications can send messages, in this case referred to as datagrams, to other hosts on an Internet Protocol (IP) network without requiring prior communications to set up special transmission channels or data paths. UDP is sometimes called the Universal Datagram Protocol.
Reference. http.//searchnetworking.techtarget.com/sDefinition/0,,sid7_gci214173,00.html