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Networking concepts Flashcards

(47 cards)

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1
Q

OSI layers (All People Seem to Need Data Processing)

A

Application
Presentation
Session
Transport
Network
Data link
Physical

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2
Q

application layer components

A

application software, network applications, anything you see with your eyes

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3
Q

application layer protocols

A

HTTP, FTP, SMIP, IMAP, SMTP

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4
Q

presentation layer components

A

data conversion utilities - protocol conversion, data translation, encryption/decryption

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5
Q

presentation layer protocols

A

SSL, ASCII, JPEG, MIDI, MPEG, GIF, MP3, MP4

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6
Q

session layer components

A

network operating system - establishes, manages, and terminates sessions

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7
Q

session layer protocols

A

NFS, SQL, PPTP, NetBIOS, PAP, SCP (tunneling)

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8
Q

transport layer units

A

segments

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9
Q

transport layer components

A

network operating system - ensures error free packets

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10
Q

transport layer protocols

A

TCP (segments, no missing packets), UDP (datagrams for streaming), SCTP

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11
Q

network layer units

A

packets

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12
Q

network layer components

A

router, layer 3 switches, NAT, PAT, provides routing decisions

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13
Q

network layer protocols

A

IP, IPX, IPSec, RIP, IPv4, IPv6, ICMP

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14
Q

data link layer units

A

frames

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15
Q

data link layer components

A

switches, NIC, token ring, frame relay, bridge, provides for flow of data

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16
Q

data link layer protocols

A

MAC addresses, ARP, PPP, HDLC, LLC, communication at MAC address levels

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17
Q

physical layer units

A

bits

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18
Q

physical layer components

A

802.11, repeater, modem, bluetooth, ethernet, hubs, network cabling, wi-fi

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19
Q

physical layer protocols

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A

DSL, ISDN, physical NICs, twisted pair cable, fiber

20
Q

TCP/IP layers

Study These Flashcards
A

Application
Transport
Network
Network interface

21
Q

TCP/IP application layer

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A

application, presentation, session

22
Q

TCP/IP transport layer

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A

ensures error-free packets, transfers and re-sends messages, responsible for breaking up data into segments

23
Q

TCP/IP network layer

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A

handles routing of diagrams, source to destination, IP addressing, provides routing decisions

24
Q

TCP/IP network interface layer

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A

Data link
Physical

25
traceroute
determine the number of hops required for a packet to reach its destination (tracert on windows)
26
nslookup
determine IP address of domain name
27
ping
determine IP address and latency in network
28
netstat -a
display IP ports currently open on the windows OS
29
whois
information about a webserver including contact information
30
ARP - address resolution protocol
displays IP to physical address mappings for hosts that have been discovered in ARP cache
31
Nmap
scans networks to find hosts and open ports
32
bus topology
single line of devices connected by one shared network cable
33
ring topology
each node connects to exactly two other nodes
34
star topology
each node is connected to the same central switch - most common
35
mesh topology
every node connects to every other node
36
infrastructure topology
most common wireless mode, all devices communicate through an access point or communicate amongst themselves
37
type 1 hypervisor (bare metal)
loaded directly on the hardware to abstract to the virtualization layer, commonly used on servers
38
type 2 hypervisor
app loaded on an operating system that abstracts the virtualization layer through its host operating system commonly used on personal computers
39
command to obtain linux machine IP address
ifconfig
40
command that displays the mapping of IP address to MAC addresses on windows
arp
41
command to fetch the IP address of windows machine
ipconfig
42
what does IaaS offer consumers
computing resources in a virtualized form
43
for wireless lan connectivity, which device is typically used?
WAP
44
network type to link multiple buildings
campus area network (CAN)
45
network type to connect computer networks and LANs across broad geographical expanses
wide area network (WAN)
46
network type that connects smaller networks throughout a city with fiber optic cables
MAN
47
what kind of router manages internal connections with no internet connectivity?
core router

Network & Security Foundations (3 decks)

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