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Cert Study Guides > Comptia Network+ > Flashcards

Comptia Network+ Flashcards

1
Q

a network that connects computers and devices in a single location, such as a home, office, or school.

A

Local Area Networks (LANs)

-LANs can be used to share resources, such as printers and file servers, and to communicate with each other using messaging and other applications.

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2
Q

a network that spans a large geographical area, such as a city, country, or even the entire world. WANs are typically used to connect LANs and other networks together, allowing devices in different locations to communicate with each other

A

Wide Area Networks (WANs)

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3
Q

a network that spans a large geographical area, such as a city or metropolitan region.

A

Metropolitan Area Networks (MANs)

-MANs are typically used to connect LANs and other networks together within a specific region.

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4
Q

a network that connects devices that are
in close proximity to each other, such as devices in the same room or within a few
feet of each other

A

Personal Area Networks (PANs)

PANs are often used to connect devices that are used by a single person, such as a smartphone, tablet, and laptop.

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5
Q

Medium to provide communication between systems

A

network

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6
Q

Portion of a network

A

Subnets – Short for “Subnetwork”

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7
Q

Type of network that provides wireless communication, AKA “Wi-Fi”

A

WLANs – Wireless Local Area Networks

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8
Q

Anything that gets an address to be able to communicate on a network is a

A

Nodes

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9
Q

Systems used for listening for requests for the information that they have, and respond to properly formed requests. Could be able to help resolve something, provide time, send and email, download an email, share files.

A

Servers

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10
Q

is a device that gives us a means of getting a lot of stations cabled up. great at
deploying a “Local Area Network”, or LAN. Focuses on Mac Addresses

A

A layer 2 switch

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11
Q

here the switch stores information about the other Ethernet interfaces to which it is connected on a network

A

MAC Address Table

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12
Q

What does MAC stand for

A

Media Access control

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13
Q

devices that move traffic. They are the major hops between any two
endpoints.

A

Router

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14
Q

set of rules, often viewed in table format, that’s used to determine where data packets traveling over an Internet Protocol (IP) network will be directed. This table is usually stored inside the Random Access Memory of forwarding devices, such as routers and network switches.

A

Routing Table

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15
Q

the process of collecting data from one device and sending it to another device

A

Forwarding

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16
Q

What layer are MAC address

A

Layer 2

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17
Q

What layer are IP addresses

A

Layer 3

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18
Q

the process of path selection in any network

A

Routing

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19
Q

do all the things a layer 2 switch can do, and they can do about 80% of the things a router can do. Capable of routing to subnets and vlans

A

Multilayer switches or layer 3 switches

20
Q

Forwards data packets between devices. sends packets directly to devices, rather than sending them to networks like a router does.

A

Switches

21
Q

Routes between subnets

A

router

22
Q

virtual local area network that is a virtualized connection that connects multiple devices and network nodes from different LANs into one logical network.

A

VLAN

23
Q

a networking device that allows wireless-capable devices to connect to a wired network

A

Access Point

24
Q

monitors and manages wireless access points in bulk and allows wireless devices to connect to WLAN

A

Wireless LAN Controller

25
Q

a network security device that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies

A

Firewall

26
Q

a monitoring system that detects suspicious activities and generates alerts when they are detected.

A

Intrusion Detection System (IDS)

27
Q

is a network security tool (which can be a hardware device or software) that continuously monitors a network for malicious activity and takes action to prevent it, including reporting, blocking, or dropping it, when it does occur.

A

An intrusion prevention system (IPS)

28
Q

server application that acts as an intermediary between a client requesting a resource and the server providing that resource.

A

Proxy server

29
Q

operates as a Layer 2 switch without VLAN features

Used to put two or more interfaces on a router or firewall in the same subnet

A

Bridge

30
Q

regenerates a signal. like a hub

A

Repeater

31
Q

circuit board that is installed on a computer to connect to the network

A

network interface card (NIC)

32
Q

Which devices can provide connectivity
between two different subnets?

A

Layer 3 switch & Router

33
Q

What do we call any computing device
connected to a network?

A

Node

34
Q

What are capabilities of Layer 3 switches? (Choose two)

A - Can connect and segment two different departments
B- Can route between networks
C - Operates as a wifi access point
D - Provides sophisticated firewall services
E - Cand operate IDS

A

A - Can connect and segment two different departments
B- Can route between networks

35
Q

a conceptual framework used to describe the functions of a networking system. The OSI model characterizes computing functions into a universal set of rules and requirements in order to support interoperability between different products and software.

A

OSI Model

36
Q

Transmission Control Protocol/Internet Protocol and is a suite of communication protocols used to interconnect network devices on the internet.

A

TCP/IP

37
Q

Layer 1 OSI Model

A

Physical Layer
The lowest layer of the OSI Model is concerned with electrically or optically transmitting raw unstructured data bits across the network from the physical layer of the sending device to the physical layer of the receiving device. It can include specifications such as voltages, pin layout, cabling, and radio frequencies. At the physical layer, one might find “physical” resources such as network hubs, cabling, repeaters, network adapters or modems.

38
Q

Layer 2 OSI Model

A

Data Link Layer

Frame

**ARP-Address Resolution Protocol or procedure that connects an ever-changing Internet Protocol (IP) address to a fixed physical machine address, also known as a media access control (MAC) address, in a local-area network (LAN). **

Switches

directly connected nodes are used to perform node-to-node data transfer where data is packaged into frames. The data link layer also corrects errors that may have occurred at the physical layer.

encompasses two sub-layers of its own. The first, media access control (MAC), provides flow control and multiplexing for device transmissions over a network. The second, the logical link control (LLC), provides flow and error control over the physical medium as well as identifies line protocols.

39
Q

Layer 3 OSI Model

A

Network Layer

Routers

ICMP-The Internet Control Message Protocol is a protocol that devices within a network use to communicate problems with data transmission.

IPV4 Addresses

The network layer is responsible for receiving frames from the data link layer, and delivering them to their intended destinations among based on the addresses contained inside the frame. The network layer finds the destination by using logical addresses, such as IP (internet protocol). At this layer, routers are a crucial component used to quite literally route information where it needs to go between networks.

40
Q

Layer 4 OSI Model

A

Transport Layer

Segments

TCP and UDP

manages the delivery and error checking of data packets. It regulates the size, sequencing, and ultimately the transfer of data between systems and hosts. One of the most common examples of the transport layer is TCP or the Transmission Control Protocol.

41
Q

Layer 5 OSI Model

A

Session Layer

Session management
Forming and tearing them down

controls the conversations between different computers. A session or connection between machines is set up, managed, and termined at layer 5. Session layer services also include authentication and reconnections.

42
Q

Layer 6 OSI Model

A

Presentation Layer

compression

formats or translates data for the application layer based on the syntax or semantics that the application accepts. Because of this, it at times also called the syntax layer. This layer can also handle the encryption and decryption required by the application layer.

43
Q

Layer 7 OSI Model

A

Application Layer

both the end user and the application layer interact directly with the software application. This layer sees network services provided to end-user applications such as a web browser or Office 365. The application layer identifies communication partners, resource availability, and synchronizes communication.

44
Q

OSI Model

A

1.Please - Physical
2.Do - Data Link
3.Not - Network
4.Throw - Transport
5.Sausage - Session
6.Pizza - Presentation
7.Away - Application

45
Q

What are PDUs

A

Protocol data units

46
Q

PDUs

A

Payload (Layer 5-7)
Layer 4 - Segment - Salavation
Layer 3 - Packet - Produces
Layer 2 - Frame - Frying
Layer 1 - Bits - Bacon

47
Q

What are the formats of MAC addresses

A

Cisco - fcfb.fb43.2e08
Linux - 0c:fd:37:43:2e:08
Microsoft - F0-6E-0B-43-2E-08

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