MIS 4363 1

what is a bit

A binary digit, a 0 or a 1.

de facto standard

A standard that has been widely adopted or accepted by a public group rather than a formal standards organization.

What is the order of transmission of a HTTP packet through the TCP/IP model?

Application, transport, network, data link, physical

What is the Internet model

Application, transport, network,data link, physical

Application logic

Business logic such as word processors, spreadsheets

What is the protocol for the physical layer

Cable, USB, Wi-Fi, HDMI

for modulation what do you want to change and what do you want to keep

Change amplitude; keep frequency and phase constant

what is a circuit

Communication link between two computers

what if computer doesn't know IP address

DNS; system servers that store URLs and IP addresses

Which layer has local responsibility?

Data Link Layer

This layer decides when to transmit so that 2 computer do not transmit at the same time:

Data link layer

what are the types of noises

EMI, cross talk, environment, attenuation , latency, echo

How do we hide email and passwords

Encryption

What is the protocol for the data link layer

Ethernet

Digital data can only be transmitted using digital transmission.

False

Email can be implemented as either two-tier client-server architecture or three-tier client-server architecture. However, these two architectures cannot be combined.

False

De jure standards

Formalized by an industry or government body e.g. HTTP, IEEE 802.3, 802.11n

What is the responsibility of the transport layer

Global responsibility

The protocol of the WWW is

HTTP

What does http stand for

Hypertext Transfer Protocol

This protocol for communicating between an email client and email server allows the client to request emails from the server and keep the email stored on the server after being read.

IMAP

What is the protocol for the network layer

IP, ARP

what is the responsibility of the Application Layer

Interact with services

what does IDF stand for

Intermediate Distribution Frame

LAN

Local Area Network; a geographic network that covers a relatively small geographic area such as a building or a small campus - no more than a mile distance between computers

What is the responsibility of the data link layer

Local responsibility

Size in scalability

Max length of segment between two computers

means to break one high-speed physical communication circuit into several lower-speed logical circuits.

Multiplrxing

SaaS (Software as a Service) is one of the three cloud computing models. Saas is based on

Multitenancy

The most commonly used technique to transmit analog voice tat through digital transmission is ______.

PCM

To transmit data through the network, each layer in the network (except physical) adds one of these to the data:

PDU (protocol data unit)

what are the connection types

Point to point (dedicated), Multipoint (shared/bus)

multiple tabs are open, how does the computer know which one to use

Port numbers

POP

Post Office Protocol; delete email from server

The most commonly used email standard on the Internet is

SMTP

Data storage

Storing the data itself

Transmission speeds vary greatly among the different media. Twisted pair, the most frequently used media in LANs, can provide data rates in the following intervals:

1 Mbps - 1 Gbps

What is the protocol for the transport layer

TCP, UDP

Which is the de facto (or most commonly implemented) standard network model today?

TCP/IP or Internet

The transmission control protocol (TCP) performs the functions of which layer?

Transport Layer

Which layer has global responsibility?

Transport Layer

A thin-client approach places little or no application logic on the client whereas thick client approach places all or almost all application logic on the client.

True

Both modems and codecs have to work in pairs in order to transmit data through circuits.

True

SMTP permits only the transfer of text messages. In order to send non-text files a new protocol, such as MIME, was developed.

True

Which kind of network can connect geographically dispersed LANs?

WAN

WAN

Wide Area Network; largest type of network in terms of geographic area; largest WAN is the Internet; > 4km

what is a throughput

amount of data transmitted in a period of time

AM

amplitude

When digital data is transmitted using analog transmission, the following characteristics of the wave are used to translate the digital data produced by computers into the analog signals:

amplitude (height), frequency (length), phase (shape)

how do we make sure only one person sees their email

authentication

FM

frequency

In this two-way transmission a computer can transmit only one irection a time.

half-duplex transmission

what is a Teleco closet

holds servers; the access layer

What is the responsibility of the network layer

hop from computer to computer

what is the protocol for the application layer

http, SMTP, IMAP

cost

initial installation and maintenance

Noise immunity

interference

Which hardware is used to connect two or more networks?

router

guided media

signals propagate in solid media: copper, fiber, coax

Each layer will only interpret a protocol that lives on

that layer

Data access logic

the processing required to access stored data

media characteristics

throughput, cost, noise immunity, size and scalabity

Half duplex transmission

two ways but switch (walkie-talkie)

Full duplex transmission

two-way transmission at all times.

what is noise

undesirable influenced to grading or distorting signal

radiated media

use an antenna for transmitting data.

presentation logic

user interface

how do we authenticate

using an email password

Which of the following is NOT true for a dumb terminal?

you can install your latest application software on it

IMAP port number

143

The HTTP status code for "OK" is:

200

What is the port number for SMTP

25

SMTPS port number

2525 or 587

A webpage has two images, how many requests

3

HTtps portnumber

443

How many layers are in the internet model?

5

OSI has how many layers?

7

how many bits are in a byte

8

HTTP port number

80

IMAPS Port number

993

what does MDF stand for

mainstream distribution frame

MIME

multipurpose internet mail extension; convert to text

Simplex transmission

one-way transmission

PM

phase

Except for this layer, all other layers add a PDU to their message

physical

The word circuit has two different meanings in networking. When we refer to the actual wire we mean ______________ circuit, however, when we refer to the transmission characteristics of the connection we mean ____________ circuit.

physical and logical

what is the responsibility of the physical layer

physical transport of data

When two computers have a dedicated circuit that connects them is called

point-to-point circuit

In a two-tier client-server architecture, the client will handle ____________________ logic and the server is responsible for the ____________ logic.

presentation & application; data access & data storage

services logic

provision of services to other applications (API)

Which one of the following media is NOT guided.

radio