Which of the following protocols has recently been succeeded by Transport Layer Security (TLS)
protocol?
A.
SNMP
B.
HTTP
C.
IPX/SPX
D.
SSL
Explanation:
The Secure Sockets Layer (SSL) is a commonly-used protocol for managing the security of a message
transmission on the Internet. SSL has
recently been succeeded by Transport Layer Security (TLS), which is based on SSL. SSL uses a
program layer located between the Internet’s
Hypertext Transfer Protocol (HTTP) and Transport Control Protocol (TCP) layers. SSL is included as
part of both the Microsoft and Netscape
browsers and most Web server products. URLs that require an SSL connection start with https:
instead of http:.
Transport Layer Security (TLS) is a cryptographic protocol that provides security and data integrity
for communications over networks such as
the Internet.
Answer C is incorrect. Internet Packet Exchange/Sequenced Packet Exchange (IPX/SPX) is a protocol
used by Novell NetWare clients to
connect to NetWare server. IPX/SPX is a routable protocol. It is supported by Microsoft operating
systems. IPX/SPX can be used for both large
and small networks. The Internet does not use this protocol.Answer A is incorrect. Simple Network Management Protocol (SNMP) is a part of the TCP/IP
protocol suite, which allows users to
manage the network. SNMP is used to keep track of what is being used on the network and how the
object is behaving.
Answer B is incorrect. Hypertext Transfer Protocol (HTTP) is a client/server TCP/IP protocol used on
the World Wide Web (WWW) to
display Hypertext Markup Language (HTML) pages. HTTP defines how messages are formatted and
transmitted, and what actions Web
servers and browsers should take in response to various commands. For example, when a client
application or browser sends a request to
the server using HTTP commands, the server responds with a message containing the protocol
version, success or failure code, server
information, and body content, depending on the request. HTTP uses TCP port 80 as the default
port.