NTA Exam Study guide Lessons 1-4 Ucertify

1. The term back-end refers to:

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

• 1. an individual computer connected to a network.

• 1. a diskless station that can only request information.

• 1. a client that acts as an interface to a collection of servers.

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

• 1. The Media Access Control (MAC) address

• 1.  The header of the network packet sent on the network

• 1. The application layer of the OSI/RM

• 1. The Cyclical Redundancy Check (CRC)

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

• 1. TCP/IP

• UDP

• 1. IPX/SPX

• ICMP

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

• 1. Cyclical redundancy check

• Encapsulation

• 1. Hadoop

• 1. Packetization

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

• UDP

• TCP

• IP

• 1. TCP/IP

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

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

• 1. Application

• Network

• 1. Presentation

• Session

In a common three-tier computing model:

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

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

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

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

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

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

• 1. The process of enabling a computer to connect to a network

• 1. The process of managing the resources on a network

• 1. The process of distributing large amounts of data via a P2P protocol

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.