COMP 4320 - Module01

In the TCP/IP model, an FTP server uses in general this (these) port number(s) at the transport layer.

21 & 20

wired LANS run at speeds from

0.1 Gbps to 1,000 Mbps

A 1 megabit/s bit (MBps) rate is ________ bits per second.

1,000,000

In the TCP/IP model, an SSH server uses in general this (these) port number(s) at the transport layer

22

In the TCP/IP model, an SSH server uses in general this (these) port number(s) at the transport layer.

22

In the TCP/IP model, a telnet server uses in general this (these) port number(s) at the transport layer.

23

The internet is a network covering typically _______

A planet

Flow control insures that

A sender does not overwhelm the receiver

A personal area network (PAN) is a network covering typically ______

A small car

protocol(s) are used at the Internet (Network) layer in the TCP/IP Reference model.

IP and ICMP

In the TCP/IP model, TCP uses this (these) protocol(s) at the network (Internet) layer.

IPv4 IPv6

Protocols that belong to the network layer

IPv4 IPv6

A network is a set of ___________ devices which can communicate

Independent

In the 0SI a reference model, the layer at level N uses a ________ to communicate with the layer N+1 Sub layer Interface None of these answers Peer to peer channel Protocol

Interface

In the TCP/IP Reference Model, a router uses this (these) layer(s) when carrying a conversation.

Internet/Network Data Link/Link

In the OSI Reference Model, a router uses this (these) layer(s) when carrying a conversation.

Internet/Network Data Link/Link Physical

the OSI Reference Model, an L3 switch uses this (these) layer(s) when carrying a conversation.

Internet/Network DataLink/Link Physical

In the TCP/IP model, UDP uses this (these) protocol(s) at the network (Internet) layer

Ipv4 and IPv6

Your wireless network at home is a _

LAN

To reduce their design complexity, most networks architectures are organized as

Layers, levels, stacks

To reduce their design complexity, most networks architectures are organized as ______.

Levels Layers Stacks

To reduce their design complexity, most networks architectures are organized as

Levels, layers, stacks

In the TCP/IP Reference Model, a bridge uses this (these) layer(s) when carrying a conversation.

Link

In the TCP/IP Reference Model, these layers are mostly implemented by hardware on most hosts (clients or servers). OSI?

Link Internet, link, physical

In the TCP/IP Reference Model, your Bluetooth interface uses this (these) layer(s) when you are browsing the Internet

Link : OSI ( link and physical)

In the TCP/IP Reference Model, your wireless router/access point uses this (these) layer(s) when it is forwarding your streaming traffic. For OSI

Link, network Physical, data link, network

The data link layers has two sublayers: ______ link and _____ control.

Logical link and medium access control

On a ______________ network, frames (packets) sent by any machine on that link are received (heard) by a subset of machines

Multicast

Header is a message exchange between layer n and layer

N

A set of layers and protocols is called

Network architecture

In the TCP/IP model, TCP uses this (these) protocol(s) at the application layer.

None

In the 0SI a reference model, the layer at level N uses a ________ to communicate with the layer N+1 Sub layer Protocol Peer to peer interface Channel interface None of these answers

None of these answers

A local area network (LAN) is a network covering typically

One room, one small building

Bluetooth is a technology that could work for these types of networks

PAN LAN

Layers at the same level on two communicating machines

Peer layers

In the OSI Reference Model, a repeater uses this (these) layer(s) when carrying a conversation

Physical

In the OSI reference model, the [name1] layer provides service directly to the data link layer.

Physical

In the OSI Reference Model, an L2 switch uses this (these) layer(s) when carrying a conversation

Physical Data Link/Link

In the OSI reference model, this (these) layers are always active on all devices carrying a conversation.

Physical Layer

For a conversation, these layers may be active on all intermediary devices in the OSI reference model

Physical, Data Link, Network

In the OSI reference model, these layers are point to point layers.

Physical, data link, network

In the OSI reference model, this layer deals with how different machines map data in memory. And to communicate

Presentation

A(n) __________ is a set of rules defining communications between peer layers

Protocol

Peer layers use a [name1] to communicate

Protocol

a set of rules defining communications between peer layers.

Protocol

A list of the protocols used by certain system, one protocol per layer, is called

Protocol stack

TCP/IP model, DNS uses most of the time this protocol at the transport layer

UDP

a popular wireless MAN protocol

WiMAX

A popular wireless MAN uses the ___________ standard.

IEEE 802.16

Ethernet uses the ____________ standard

IEEE 802.3

protocol(s) that belong(s) to the physical layer

IEEE 802.3 (Ethernet)

1 kilobits/s (Kbps) bit rate is _____________ bits per second

1000

1 mbps is what in bps

1000000

A 1 gigabits/s (Gbps) bit rate is _____________ bits per second

1000000000

The number of layers that the TCP/IP Reference Model specifies explicitly is ________ .

4

The OSI reference model has____ end-to-end layers and ___ point-to-point layers.

4 and 3

In the TCP/IP model, a DNS server uses in general this (these) port number(s) at the transport layer

53

In the TCP/IP model, an HTTP server uses in general this (these) port number(s) at the transport layer.

80

Bluetooth is a technology that could work well to connect_______

A Central unit(computer) with the standard inputs/outputs Audio system to your cellphone in a car Wireless speakers to an entertainment center

In the TCP/IP Reference Model, your laptop uses this (these) layer(s) when you are configuring your wireless router/access point using a browser.

ALL 4

In the TCP/IP Reference Model, your laptop uses this (these) layer(s) when you are browsing the Internet (using an application like Firefox, Chrome, or Internet Explorer).

APPLICATION , TRANSPORT, INTERNET, LINK

The purpose of each layer is to offer services to the layer just ________ it.

Above

Design issue that consists of identifying the sender and receiver

Addressing

Network offers what services

Addressing, congestion control, routing

Transport offers what services

Addressing, flow control, error control, congestion control

Data link offers what services

Addressing, flow control, error control, medium access control, framing

The application layer offers in general these services/functions

Addressing/Naming Specialized services to users that lower layers do not offer ------------- Communicates with the end user Allows the end users to use the network services

In the TCP/IP Reference Model, the youtube server uses this (these) layer(s) when streaming to you videos

All 4

In the TCP/IP Reference Model, your wireless router/access point uses this (these) layer(s) when you are configuring it using a browser.

All 4 of them

In the OSI Reference Model, the youtube server uses this (these) layer(s) when streaming to you videos

All 7

In the OSI Reference Model, your wireless router/access point uses this (these) layer(s) when you are configuring it using a browser.

All 7

the OSI Reference Model, your laptop uses this (these) layer(s) when you are browsing the Internet (using an application like Firefox, Chrome, or Internet Explorer).

All 7

the OSI Reference Model, your laptop uses this (these) layer(s) when you are configuring your wireless router/access point using a browser.

All 7

In the OSI reference model, these layers are active only on devices at the end points of a conversation.

All 7 layers

Key objectives of a layered design

Allows to conquer by aggregating separate services Simplify a complex function/service by partitioning it into smaller functions The serviced layer does not have to worry about the details belonging to the serving layer (service provider)

In the OSI reference model, this layer is an intruder (i.e., it does not belong within this list of options). Application Physical Data Link Network

Application

In the OSI reference model, this layer is the closest to the "user"

Application

In the OSI Reference Model, these layers are mostly implemented by software on most hosts (clients or servers).

Application Presentation Session Transport Internet/Network

In the TCP/IP Reference Model, these layers are mostly implemented by software on most hosts (clients or servers).

Application , transport , Internet

In the OSI reference model, these layers are end-to-end layers.

Application, presentation, session, transport

Each layer requests service(s) from the layer just ________ it

Below

Check the protocol(s) that belong(s) to the physical layer

Both IEEE

A metropolitan are network (MAN) is a network covering typically ________

City

The network layer provides this (these) service(s).

Congestion Control Routing. (finds paths between senders and receivers.) Addressing/Naming

the design issue that consists of avoiding that a sender overwhelms the intermediary nodes.

Congestion control

Transmission lines on WANs are in general made of

Copper wire, optical fiber, radio links

In the OSI reference model, this layer is an intruder (i.e., it does not belong within this list of options) Application Transport Data Link Presentation

Data Link

In the OSI Reference Model, a bridge uses this (these) layer(s) when carrying a conversation.

Data Link & physical

In the TCP/IP Reference Model, an L2 switch uses this (these) layer(s) when carrying a conversation

Data Link/Link

In the OSI Reference Model, your ethernet interface uses this (these) layer(s) when you are browsing the internet.

Data Link/Link Physical TCP/IP: Data Link/Link

This issue is not a network software issue Error detection or correction Routing Energy/Power management None of these answers Addressing, naming

Energy/power management

the design issue that consists of correcting errors in the received information.

Error correction

the design issue that consists of finding errors in the received information.

Error detection

________ is the design issue that consists of avoiding that a sender overwhelms a receiver.

Flow Control

On networks, the machines that run users programs (applications) are most likely called ________.

Host

protocol(s) that belong(s) to the presentation layer

IEEE 754

Wifi uses the ____ standard.

IEEE 802.11

Your wireless network at home (to access the Internet) uses most likely the ________ standard.

IEEE 802.11

This (These) protocol(s) are used at the Link layer in the TCP/IP Reference model.

IEEE 802.11 Ethernet

protocol(s) that belong(s) to the data link layer

IEEE 802.11 & IEEE 802.3

Match protocols to their original RFC :UDP

RFC 768

Match protocols to their original RFC: IP

RFC 791

Match protocols to their original RFC: ICMP

RFC 792

This (These) protocol(s) are used at the Application layer in the TCP/IP Reference model.

RTP HTTP SMTP DNS

Flow control ensures that the sender does not overwhelm the

Receiver

Match protocols to their original RFC: TCP

Rfc 793

WANs, switches are called

Routers

Design issue consists of finding a path between a source host and destination host

Routing

Two key functions/services offered by the network layer are _______

Routing and Addressing

protocol(s) that belong(s) to the application layer

SMTP SSH DNS HTTP

In the OSI reference model, the [name1] layer receives service directly from the transport layer

Session

The Transport layer provides this (these) service(s)

Splits messages too large for the network Detects transmission errors Handles congestion

FTP uses most of the time this protocol at the transport layer.

TCP

In the TCP/IP model, FTP uses most of the time this protocol at the transport layer.

TCP

In the TCP/IP model, HTTP uses most of the time this protocol at the transport layer.

TCP

In the TCP/IP model, SMTP uses most of the time this protocol at the transport layer.

TCP

In the TCP/IP model, SSH uses most of the time this protocol at the transport layer.

TCP

protocol(s) are used at the Transport layer in the TCP/IP Reference model.

TCP and UDP

These are the underlying design constraints that resulted in what the OSI Reference Model is today

The flow of information through interfaces must be minimal. Each Layer should perform a well-defined function

Switches connect two or more

Transmission lines

In the OSI Reference Model, this end-to-end layer deals with error control and flow control (besides other functions).

Transport

In the OSI reference model, this end-to-end layer deals with addressing and congestion control(besides other functions)

Transport

An interface defines the primitive operations and services between _________ layers.

adjacent

The application layer provides this (these) service(s).

communicates with the end user. allows the end users to use the network services. Specialized services to users

The physical layer provides this (these) service(s)

deals with the mechanical/electrical characteristics of the transmission medium transmits on channels raw bits.

The data link layer provides this (these) service(s).

detects transmission errors. controls the access to the medium Framing Error Control Flow Control

TCP/IP Reference Model includes this (these) layer(s).

link, Ethernet, transport, application

The application layer offers in general these services/functions.

specialized services to users that lower layers do not offers