NTA Exam Study guide Lessons 1-4 Ucertify

Front

The term back-end refers to:

Back

a series of systems that fulfills requests made by a client.

Front

Which of the following is used in packet-based networks to ensure that a packet is valid?

1. The Media Access Control (MAC) address
2. The header of the network packet sent on the network
3. The application layer of the OSI/RM
4. The Cyclical Redundancy Check (CRC)

Back

The Cyclical Redundancy Check (CRC)

Front

Which protocol does the Windows Server family use as the default network protocol?

Back

TCP/IP

Front

What is the term for the mathematical calculation that allows the receiving computer to verify whether a packet is valid?

Back

Cyclical redundancy check

Front

Which protocol is connectionless and is often used to transfer relatively small amounts of information?

Back

UDP

Front

Which of the following protocols is found at the transport layer of the OSI/RM?

1. Transmission Control Protocol (TCP)

,

1. Internet Protocol (IP)

,

1. Ethernet

,

1. Token Ring

Back

Transmission Control Protocol (TCP)

Front

Which layer of the OSI/RM is the interface to the user in a networking environment?

Back

Application

Front

In a common three-tier computing model:

Back

a Web server contains the business logic, a Web browser is responsible for presentation, and a database server contains the data.

Front

In the context of the OSI/RM, what is data encapsulation?

Back

The process of passing information through the layers of the OSI/RM.

Front

Which of the following describes the physical layer of the OSI/RM?

1. It is associated with the transmission of unstructured bit streams over media.

,

1. It provides reliable, transparent transport between end points.

,

1. It defines how data is formatted for transmission and how access to the network is controlled.

,

1. It organizes data into packets and provides reliable addressing services among hosts and networks.

Back

It is associated with the transmission of unstructured bit streams over media.