IS310 Exam #1

The probability of detecting an error, provided that one has occurred, using cyclic redundancy checking (CRC) is about:

> 99%

A(n) _______________is the way in which the functions of the application layer software are spread among the clients and servers in the network.

Application architecture

With ______________, the cloud provider manages the hardware including servers, storage, and networking components. The organization is responsible for all the software, including operating system (and virtualization software), database software, and its applications and data.

IaaS

Which of the following is true with respect to the data link layer?

It performs error detection.

A "thin client" architecture approach:

Places all or almost all of the application logic on the server

To interact with the World Wide Web, a client computer needs an application layer software package called a:

Web browser

With odd parity (assume that the parity bit (Last bit) has been placed at the end of each of the following) and a 7-bit ASCII code, which of the following is incorrect?

00011011

If each sample uses 16 bits and the number of samples taken each second is 8000; then the transmission speed on the circuit is?

128 Kbps

The most commonly used e-mail standard is:

Simple Mail Transfer Protocol

A local area network is:

a group of personal computers or terminals located in the same general area and connected by a common cable (communication circuit) so they can exchange information such as a set of rooms, a single building, or a set of well-connected buildings.

Digital transmission produces more errors than analog transmission.

false

Fiber optic cables can only be used on LANs.

false

Host-based and client-based networks are similar in that the client computer performs most of the work.

false

In a multipoint circuit configuration, each computer can use the circuit at the same time.

false

In simplex transmission, the data flows in both directions at the same time

false

The OSI model is currently the most widely implemented network model used to develop and build networks of any size, including the Internet itself.

false

The standard protocol for communication between a Web browser and a Web server is the web protocol.

false

Which of the following media has the lowest error rates and the highest transmission speeds?

fiber optic cable

The two basic types of media are:

guided and wireless (radiated)

A(n) _________ is a LAN that uses the same technologies as the Internet but is open to only those inside the organization.

intranet

The two sublayers of the data link layer consist of the media access control sublayer and the________.

logical link control sublayer

Which of the following would be considered a type of wireless media?

microwave

Which is not true about point-to-point circuits?

point-to-point circuits reduce the amount of cable required and use the circuit more efficiently than multipoint circuits.

A(n) _____________ is a set of rules that determine what a layer would do and provides a clearly defined set of messages that software at the layer needs to understand.

protocol

A walkie-talkie is an example of half-duplex transmission.

true

Telecommunications is the transmission of voice and video as well as data and usually implies transmitting a longer distance.

true

The four general functions of any application program are: data storage, data access logic, application logic and presentation logic.

true

The physical and data link layers of wired Ethernet have been refined over the years as a collection of standards under the IEEE 802.3 workgroup.

true

The web is a good example of two-tier client-server architecture.

true

Web-based e-mail like Hotmail is an example of three-tier client-server architecture that provides access to e-mail messages.

true