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CompTia A+ Objectives > Objectives: 2.1 - 2.8 Networking > Flashcards

Objectives: 2.1 - 2.8 Networking Flashcards

1
Q

2 ways to move data from place to place

A

TCP and UDP

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2
Q

use many different applications at the same time

A

Multiplexing

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3
Q

Formal connection setup and close

Reliable delivery = recovery from errors and can manage out-of-the-order messages

A

Transmission control Protocol (TCP)

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4
Q

Connectionless/ No formal connection

Unreliable delivery = no error recovery and no reordering of data

A

User Datagram Protocol (UDP)

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5
Q

automatically assign IP addresses to devices

responsible for making sure that info may have been received by the other side and if info failed to reach to the other side then it will resend the info

A

Dynamic Host Configuration Protocol (DHCP)

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5
Q

transport mechanism

A

Trivial File Transfer Protocol (TFTP)

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6
Q

to use send info in our web browser and protocols

A

Hypertext Transfer Protocol Secure

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6
Q

provide an encrypted form of terminal communication between our systems

A

Secure Shell

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7
Q

tcp/20 (active mode data) & tcp/21 (control)

transfers files between systems

A

File Transfer Protocol (FTP)

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7
Q

Encrypted communication link - tcp/22

A

Secure Shell (SSH)

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8
Q

tcp/23: console access

A

Telecommunication Network (Telnet)

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9
Q

tcp/25: Server to server email transfer

A

Simple Mail Transfer Protocol (SMTP)

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10
Q

udp/53: Converts names to IP addresses

A

Domain Name System (DNS)

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11
Q

tcp/80: Communication in the browser

A

Hypertext Transfer Protocol (HTTP)

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12
Q

udp/67 & udp/68: Automated configuration of IP address, subnet mask and other options

A

Dynamic Host Configuration Protocol (DHCP)

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12
Q

tcp/443: Web server communication with encryption

A

Hypertext Transfer Protocol Secure (HTTPS)

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13
Q

tcp/110: basic mail transfer functionality

A

Post office Protocol version 3 (POP3)

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13
Q

tcp/143: Includes management of email inbox from multiple clients

A

Internet Message Access Protocol v4 (IMAP4)

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14
Q

It’s also known as Common internet file system (CIFS), responsible for file sharing and printer sharing

A

Server Message Block (SMB)

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14
Q

Direct SMB communication over TCP without the NetBIOS transport

A

tcp/445 (NetBIOS-less)

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15
Q

facilitate the conversation

A

udp/137: NetBIOS name services (nbname)

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15
Q

Older version of Windows as transporter is

A

tcp/139: NetBIOS Session service (nbsession)

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16
Q

Gather statistics from network devices

A

Simple Network Management Protocol (SNMP)

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17
Q

udp/161

A

Queries

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18
Q

The Original to structure tables in the clear

A

SNMP Version 1

18
Q

udp/162

A

Traps

19
Q

A secure standard:
- message integrity
- authentication
- encryption

A

SNMP Version 3

19
Q
  • Data types enhancements
  • bulk transfers
  • still in the clear
A

Version 2 SNMP

19
Q

tcp/389: Store and retrieve info in a network directory

A

Lightweight Directory Access Protocol (LDAP)

20
Q

tcp/3389: Share a desktop from a remote location

connect to an entire desktop or an application

A

Remote Desktop Protocol (RDP)

20
Q

known as layer 3 switches, they are responsible of the traffic between IP subnets

A

Routers

20
Q

bridging done in hardware forwards traffic based on data link address

A

Switches

21
Q

it’s a fixed configuration with no VLANs, no management protocols, and less expensive

A

Unmanaged switches

21
Q
  • VLAN support
  • Traffic prioritization
  • Redundancy support
  • Port mirroring
  • External management
A

Managed switches

22
Q

a bridge for wired network onto a wireless network and forwarding decisions based on MAC address

A

Access point

23
Q

combo of punch-down blocks and RJ 45 connectors that is easily changed

A

Patch panels

24
Q
  • Filters traffic by port number
  • encrypts traffic into and out of the network
  • can proxy traffic
A

Firewalls

24
Q

15.4 watts DC power, 350 mA max current

A

PoE: IEEE 802.3af

25
Q

25.5 watts DC power, 600 mA max current

A

PoE+: IEEE 802.3at

26
Q

51 W, 600 mA max current

A

PoE++: IEEE 802.3bt type 3

26
Q

71.3 W, 960 mA max current

A

PoE++: IEEE 802.3bt type 4

26
Q

known as multi-port repeater: traffic going in one port is repeated to every other port

A

Hub

27
Q
  • data on the cable network provides speeds up to 1 Gigabit/s
  • multiple services such as data, voice, and video
A

Data Over Cable Service Interface Specification (DOCSIS)

27
Q

Broadband: transmission across multiple frequencies

A

cable modem

28
Q

ADSL: uses telephone lines

download speed is faster than upload speed: 52 Mbit/s downstream and 16 Mbit/s upstream

A

DSL modem

29
Q
  • Connect the ISP fiber network to the copper network
  • line responsibility: one side of the box is the ISP and other side of the box is your network
A

Optical Network terminal (ONT)

30
Q

every device will need this card to provide internet

A

Network Interface Card (NIC)

31
Q

process the network frames and packets for forwarding, trunking, and encrypting NAT

A

Infrastructure layer/ Data Plane

32
Q
  • manages the actions of the data plane
  • routing tables, session tables, and NAT tables
  • Dynamic routing protocol updates
A

Control layer / control plane

33
Q
  • Configure and manage the device
  • SSH, browser, and API
A

Application layer / management plane

34
Q
  • 54 Mbit/s and operates in the 5 GHz
  • Higher Frequency is absorbed by objects in the way
A

802.11a

35
Q

11 Mbit/s and
- operates in 2.4 GHz
- Better range than 802.11a and less absorption problems

A

802.11b

36
Q
  • operates in the 2.4 GHz range
  • 54 Mbit/s
  • backwards compatible with 802.11b
A

802.11g

37
Q
  • operates at 5GHz and/ or 2.4GHz
  • 4x MIMO
  • 150 Mbit/s per stream
  • 600 Mbit/s total
A

802.11n (Wi-Fi 4)

38
Q
  • Operates 5 GHz
  • 8 x DL MU-MIMO
  • 867 Mbit/s per stream
  • 6.9 Gbit/s total
A

802.11ac

39
Q
  • Operates at 5 GHz and/or 2.4 GHz
  • 1,201 Mbit/s per stream
  • 9.6 Gbit/s total
A

802.11ax

40
Q

wireless access point in a house with the stock antennas ranges of 40 to 50 meters

A

long-range fixed wireless

41
Q

used for identification and anything needs to be tracked. For example,

A

Radio frequency Identification (RFID)

42
Q
A
42
Q
A
43
Q
A

CompTia A+ Objectives (2 decks)

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