comnet2

Question 1

that’s connected using a hub, which is basically just an antiquated
device that connects wires together.

Answer 1

Local Area Network

Question 2

is breaking up a massive network into a number to smaller one.

Answer 2

Network Segmentation

Question 3

3 networking Devices

Answer 3

Routers
Switches
Bridges

Question 4

Causes of LAN traffic Congestion

Answer 4

• Too many hosts in a collision or broadcast domain
• Broadcast storms
• Too much multicast traffic
• Low bandwidth
• Adding hubs for connectivity to the network
• A bunch of ARP broadcasts

Question 5

are basically employed to efficiently break up a broadcast domain

Answer 5

Routers

Question 6

are allowed to “hear” all broadcasts sent out on that specific segment.

Answer 6

Routers

Question 7

provide connections to wide area network (WAN) services as well via a
serial interface for WAN connections

Answer 7

Routers

Question 8

the set of all devices on a network segment

Answer 8

Broadcast Domain

Question 9

Router functions in the network:

Answer 9

Router functions in the network:
• Packet switching
• Packet filtering
• Internetwork communication
• Path selection

Question 10

it forwards or filter frames using logical addressing and provide an
important capacity.

Answer 10

Packet Switching

Question 11

is connect two or more networks together and use logical addressing
(IPv4 or IPv6)

Answer 11

Internetwork

Question 12

is an Ethernet term used to describe a network scenario in which one
device sends a packet out on a network segment and every other
device on that same segment is forced to pay attention no matter
what.

Answer 12

Collision Domain

Question 13

• basically do the same thing—break up collision domains on a LAN

Answer 13

Bridged and Switches

Question 14

These devices connect wireless devices such as computers, printers, and tablets to the network. Since pretty much every device
manufactured today has a wireless NIC, you just need to configure a
basic access point (AP) to connect to a traditional wired network.

Answer 14

WLAN devices

Question 15

These devices allow wireless devices to connect to a wired network
and extend a collision domain from a switch, and are typically in their
own broadcast domain or what we’ll refer to as a Virtual LAN (VLAN).

Answer 15

Access Points or APS

Question 16

Can be a simple standalone device, but today they are usually
managed by wireless controllers either in house or through the
intern

Answer 16

Access Points

Question 17

These devices are network security systems that monitor and control
the incoming and outgoing network traffic based on predetermined
security rules, and is usually an Intrusion Protection System (IPS).

Answer 17

Firewalls

Question 18

OSI meaning

Answer 18

Open systems interconnection

Question 19

ISO meaning

Answer 19

International Organization for Standardization

Question 20

In the late 1970s, the Open Systems Interconnection (OSI) reference model
was created by the International Organization for Standardization (ISO) to
break through this barrier.

Answer 20

Internetworking Models

Question 21

model was meant to help vendors create interoperable network
devices and software in the form of protocols so that different vendor
networks could work in peaceable accord with each other.

Answer 21

OPEN SYSTEMS INTERCONNECTION

Question 22

the primary architectural model for networks. It describes
how data and network information are communicated from an application
on one computer through the network media to an application on another
computer. The OSI reference model breaks this approach into lay

Answer 22

OSI model

Question 23

is a conceptual blueprint of how communications should take place.

Answer 23

Reference Model

Question 24

processes required for effective communication and divides them into logical groupings hierarchical or layered architecture a
communication system is design.

Answer 24

Layers

Question 25

is a logical model, not a physical one.

Answer 25

OSI model

Question 26

It’s essentially a set of guidelines that developers can use to create and implement applications to run on a network.

Answer 26

OSI model

Question 27

It also provides a framework for creating and implementing networking standards, devices, and internetworking scheme

Answer 27

OSI model

Question 28

Layer that define how the applications within the end stations will communicate with each other as well as with users.

Answer 28

Three top layers ( Layer 7(Application) ,6 (presentation) ,5(session))

Question 29

Layer that define how data is transmitted end to end.

Answer 29

Bottom four layer (layer 4(transport) ,3(network) ,2(Data Link),1 (Physical)

Question 30

The OSI reference model has the following seven layers:

Answer 30

• Application layer (layer 7) • Presentation layer (layer 6) • Session layer (layer 5) • Transport layer (layer 4) • Network layer (layer 3) • Data Link layer (layer 2) • Physical layer (layer 1)

Question 31

The layer that provides the user interface

Answer 31

Layer 7 ( Application )

Question 32

Layer that presents data snd handles processing such as encryption

Answer 32

Presentation layer

Question 33

Layer that keeps different applications data separate

Answer 33

Session layer

Question 34

Layer that provides reliable or unreliable delivery and performs error correction before retransmit

Answer 34

Transport layer

Question 35

Layer that provides logical addressing, which routers use for path determination

Answer 35

Network layer

Question 36

Layer that combines packets into bytes, bytes into frames. It also provide access to media using MAC address. Perfroms error detection

Answer 36

Data link Layer

Question 37

Layer that moves bits into devices. It also specifies voltage, wire speed, and pinout of cables

Answer 37

Physical layer

Question 38

Its function is to file, print, message, databaseand application services

Answer 38

Application layer( layer 7)

Question 39

Its function is to Data encryption, compression and translation services

Answer 39

Presentation layer( layer6)

Question 40

Its function is to dialog control

Answer 40

Session layer (layer 5)

Question 41

Its function is to provide end to end connection

Answer 41

Transport layer (layer 4)

Question 42

It's function is tl route

Answer 42

Network layer (layer 3)

Question 43

It's function is framing

Answer 43

Data link layer (layer 2)

Question 44

Its function is to provide physical topology

Answer 44

Physical layer (layer 1)

Question 45

the OSI model marks the spot where users actually communicate to the computer and comes into play only when it’s clear that access to the network will be needed soon.

Answer 45

Application layer

Question 46

Here are a few good examples of these kinds of events: • File transfers • Email • Enabling remote access • Network management activities • Client/server processes • Information location

Answer 46

Application Layer

Question 47

layer gets its name from its purpose: It presents data to the Application layer and is responsible for data translation and code formatting. Think of it as the OSI model’s translator, providing coding and conversion services. One very effective way of ensuring a successful data transfer is to convert the data into a standard format before transmission.

Answer 47

Presentation layer

Question 49

responsible for setting up, managing, and dismantling sessions between Presentation layer entities and keeping user data separate. Dialog control between devices also occurs at this layer.

Answer 49

Session layer

Question 50

Three Different Modes: (session layer)

Answer 50

• Simplex • Half-duplex • Full-duplex

Question 51

simple one-way communication, kind of like saying something and not getting a reply.

Answer 51

Simplex

Question 52

is actual two-way communication, but it can take place in only one direction at a time, preventing the interruption of the transmitting device..

Answer 52

Half Duplex

Question 53

is exactly like a real conversation where devices can transmit and receive at the same time, much like two people arguing or interrupting each other during a telephone conversation.

Answer 53

Full duplex

Question 54

layer segments and reassembles data into a single data stream

Answer 54

Transport layer

Question 55

responsible for providing mechanisms for multiplexing upper layer

Answer 55

Transport layer

Question 56

device that transmit and establish a connection-oriented communication session with a remote device

Answer 56

Call set up or three way handshake

Question 57

First segment in Three way handshake

Answer 57

Synchronization

Question 58

Second segment in three way handshake

Answer 58

acknowledge (ACK) the request and establish connection parameters—

Question 59

The final segment in three way handshake

Answer 59

Acknowledgement

Question 60

Its job is to ensure data integrity at the Transport layer by allowing applications to request reliable data transport between systems.

Answer 60

Flow control

Question 61

is the quantity of data segments, measured in bytes, that the transmitting machine is allowed to send without receiving an acknowledgmen

Answer 61

Windowing

Question 62

Reliable data delivery ensures the integrity of a stream of data sent from one machine to the other through a fully functional data link

Answer 62

Acknowledgement

Question 63

technique that requires a receiving machine to communicate with the transmitting source by sending an acknowledgment message back to the sender when it receives data. CCNA Routing a

Answer 63

Positive acknowledgement

Question 64

manages device addressing, tracks the location of devices on the network, and determines the best way to move data.

Answer 64

Network layer

Question 65

layer to transport traffic between devices that aren’t locally attached.

Answer 65

Network layer

Question 66

these are used to transport user data through the internetwork.

Answer 66

Data packets

Question 67

these packets are used to update neighboring routers about the networks connected to all routers within the internetwork.

Answer 67

Route update packet

Question 68

send route update packets.

Answer 68

Routing protocols

Question 69

specific network addresses.

Answer 69

NAP ( network access protocol)

Question 70

The exit interface a packet will take when destined for a specific network.

Answer 70

Interface

Question 71

The distance to the remote network. Different routing protocols use different ways of computing this distance.

Answer 71

Metric

Question 72

What is the layer 2 of a router

Answer 72

bridging functions

Question 73

What is the function of the layer 3 in router

Answer 73

provide connections between virtual LANs (VLANs)

Question 74

provides for the physical transmission of data and handles error notification, network topology, and flow control.

Answer 74

Data Link

Question 75

layer will ensure that messages are delivered to the proper device on a LAN using hardware addresses and will translate messages from the Network layer into bits for the Physical layer to transmit.

Answer 75

Data link Layer

Question 76

The Data Link layer formats the messages, each called

Answer 76

Data frame

Question 77

Defines how packets are placed on the media. Contention for media access is “first come/first served” access where everyone shares the same bandwidth— hence the name.

Answer 77

Media Access Protocol

Question 78

it’s the signal path through a physical topology.

Answer 78

Logical topology

Question 79

Responsible for identifying Network layer protocols and then encapsulating them

Answer 79

Logical link control (LLC)

Question 80

tells the Data Link layer what to do with a packet once a frame is received.

Answer 80

LLC Header

Question 81

can also provide flow control and sequencing of control bits.

Answer 81

LLC

Question 82

is considered hardware-based bridging because it uses specialized hardware called an application-specific integrated circuit (ASIC). - ASICs can run up to

Answer 82

Layer 2 switching

Question 83

does two things: it sends bits and receives bits. Bits come only in values of 1 or 0 - a Morse code with numerical values.

Answer 83

Physical Layer

Question 84

communicates directly with the various types of actual communication media. Different kinds of media represent these bit values in different ways.

Answer 84

Physical Layer

Question 85

really a multiple-port repeater

Answer 85

Hub

Question 86

receives a digital signal, reamplifies or regenerates that signal, then forwards the signal out the other port without looking at any data.

Answer 86

Repeater

Question 87

a network refers to the physical layout of the devices, but mostly the cabling and cabling layout.

Answer 87

Physical topology

Question 88

defines the logical path on which the signal will travel on the physical topology.

Answer 88

Logical topology

Question 89

every workstation is connected to a single cable, meaning every host is directly connected to every other workstation in the network.

Answer 89

Bus topology

Question 90

computers and other network devices are cabled together in a way that the last device is connected to the first to form a circle or ring.

Answer 90

Ring topology

Question 91

The most common physical topology is a star topology, which is your Ethernet switching physical layout. A central cabling device (switch) connects the computers and other network devices together. This category includes star and extended star topologies. Physical connection is commonly made using twisted-pair wiring.

Answer 91

Star topology