Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

A+ > Network Configuration > Flashcards

Network Configuration Flashcards

1
Q

Link/Network Interface Layer

A

Responsible for putting frames in the physical network’s transmission data. (ex. copper twisted pair cable, fiber optic cable). Data can only travel through the local area network.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Internet Layer

A

Used to address packets and route them across the network.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Transport Layer

A

Shows How to send the packets.

-Transmission Control Protocol (TCP): Guaranteed connection oriented method of ending packets from one deice to another, slower than UDP
0User Datagram Protocol (UDP): Connectionless protocol, faster than TCP but delivery is not guaranteed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Application Layer

A

Contains all the protocols that perform higher-level functions (e-mail, file transfer, encryptions, ect.)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

IPv4 addresses can be broke into classes

A

See table!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Multicast Address

A

A logical identifier for a group of hosts in a computer network (ex, a group chat in Facebook, multicast works the same way)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Class A Network

A

1st octate: 1-127
Default Subnet Mask: 255.0.0.0
Possible hosts: 256 x 256 x 256 = 16.7 million

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Class B Network

A

1st octate: 128-191
Default Subnet Mask: 255.255.0.0
Possible hosts: 256 x 256 = 65,536

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Class C Network

A

1st octate: 192-223
Default Subnet Mask: 255.255.255.0
Possible hosts: 256

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Class D Network

A

1st octate: 224-239
Does not have subnetmask assigned to it
Works as a Multicast Address

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Class E Network

A

1st octate: 240-255
Reserved for experimental purposes
Possible hosts: 268 million

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Classful Mask

A

Default subnet mask for a given class of IP addresses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Classless Inter-Domain Routing (CIDR)

A

Allows for borrowing some of the host bits and reassigning them to the network portion

Ex.

Class C subnet

255.255.255.0

This can be changed to…

255.255.255.192

This essentially divides our host into 4 smaller networks with 64 hosts each. This is known as a CIDR notation

example!

192.168.1.4
255.255.255.0

abbreviates to…

192.168.1.4/24

192.168.1.4
255.255.255.192

abbreviates to…

192.168.1.4/26

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Class A CIDR notation

A

/8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Class B CIDR notation

A

/16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Class C CIDR notation

A

/24

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

IPv4 Public (routable)

A

Can be accessed ove the Internet and is assigned to the network by an Internet Service Provider

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

IPv4 Private (non-routable)

A

Can be used by anyone any time, but only within their own local network. Private Ip ranges include those that start with either 10, 172, or 192

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Network Address Translation (NAT)

A

Allows for routing of private IPs through a public IP

20
Q

Ranges for private IP addresses (IMPORTANT TO MEMORIZE!!!!)

A

Class A
-Starting value: 10
-IP Range: 10.0.0.0-10.255.255.255
-Possible hosts: 16.7 million

Class B
-Starting value: 172.16 - 172.31
-IP Range 172.16.0.0 - 172.31.255.255
-Possible Hosts: 1.05 million

Class C
-Starting Value: 192.168
-IP Range 192.168.0.0 - 192.168.255.255
-Possible Hosts: 65,536

21
Q

Loopback Address (127.0.0.1)

A

Creates a loopback to the host and is often used in troubleshooting and testing network protocols on a system

22
Q

Automatic Private IP Addresses (APIPA)

A

Used when a device does not have a static IP address or cannot reach a DHCP server. Range is from 169.254.0.0 to 169.254.255.255

23
Q

D.O.R.A.

A

Discover
Offer
Request
Acknowledge

24
Q

IPv4 Static Assignment

A

Manually type the IP address for the host, its subnet mask, fault gateway, and DNS server

25
Q

Dynamic Assignment

A

Dynamic allocation of IP addresses

26
Q

Domain Name System (DNS)

A

Converts the domain names used by a website to the IP address of its server. Essentially the internet version of a phone book.

27
Q

Windows Internet Name Service (WINS)

A

Identifies NetBIOS systems on a CTP/IP network and converts those NetBIOS names to IP addresses

28
Q

Bootstrap Protocol (BOOTP)

A

Dynamically assigns IP addresses and allows a workstation to load a copy of boot image to the network

29
Q

Dynamic Host Control Protocol (DHCP)

A

Assigns an IP based on an assignable scope or addresses and provides the ability to configure other options. You can configure scope. DHCP is the modern implementation of BOOTP

Example:

Only assign addresses 192.168.1.100 through 192.168.1.200

Each IP is leased for a period of time and returns to the pool when the lease expires.

DHCP provides:

-IP address
-Subnet Mask
-Default Gateway
-DNS/WINS server

30
Q

Automatic Private IP Addressing (APIPA)

A

Used when a device does not have a static IP address or cannot reach a DHCP server. Allows for the quick configuration of a LAN without the need for a DHCP server. APIPA-assigned devices cannot communicate outside the LAN or with non-APIPA devices

31
Q

Zero Configuration (ZeroConf)

A

New technology the provides the same features as APIPA. Can Resolve computer name to IP addresses without the need for DNS by using the mDNS(multicast domain name server). It can perform service discovery on a network.

32
Q

Dynamic Host Configuration protocol (DHCP)

A

Provides an IP address to very machine on the network and eliminates configuration errors.

33
Q

Scope

A

List of valid IP addresses available for assignment or lease to a client computer or endpoint device on a given subnet

34
Q

DHCP Reservation

A

Excludes some IP addresses from being handed to devices unless they meet a certain condition. (Ex. set a DHCP reservation for a printer based on its mac address. Default lease time in home networks is 24 hours. For corporate, 7 to 30 days.

35
Q

4 steps of configuring a network using DHCP?

A

Discover
Offer
Request
Acknowledge

36
Q

Domain Name System (DNS)

A

Helps network clients find a website using human-readable hostnames instead of numeric IP addresses

37
Q

Fully-Qualified Domain Name (FQDN). (Check table in presentation 100 at 6:27 for domain hierarchy)

A

Domain name under a top-level provider (ex. .com, .org)

example:

service.domain name.top-level domain

(www.diontraining.com)

38
Q

Uniform Resource Locator (URL)

A

Contains the FQDN with the method of accessing information

ex.

https://
http://
ftp://

39
Q

DNS records within a DNS Server

A

A
-Description: Address
-Function: Links a hostname to an IPv4 Address

AAAA
-Description: Address
-Function: Links a hostname to an IPv6 Address

CNAME
-Description: Canonical Name
-Function: Points a domain to another domain or subdomain (ex. www.itil4exam.com redirects to www.diontraining.com). Can only be used to point to another domain or subdomain, not to an IP address

MX
-Description: Mail Exchange
-Function: Directs emails to a mail server

TXT
-Description: Text
-Function: Adds text into the DNS (Can add SPF, DKIM, DMARC information)
-Sender Policy Framework (SPF): DNS record that identifies the host authorized to send mail for the domain
-DomainKeys Identified Mail (DKIM): Provides the cryptographic authentication mechanism for mail using a public key published as a DNS record
-Domain-based Message Authentication, Reporting & Conformance (DMARC): Framework that is used for proper application of SPF and DKIM, utilizing a policy that’s published as a DNS record

NS
-Description: Nameserver
-Function: Indicates which DNS nameserver has the authority

40
Q

Nameserver

A

Type of DNS server that stores all the DNC records for a given domain

41
Q

Internal DNS

A

Allows cloud instances on the same network access each other using internal DNS names

42
Q

External DNS

A

Records created around the domain names from a central authority and used on the public internet

43
Q

Time to Live (TTL)

A

Tells the DNS resolver how long to cache a query before requesting a new one

44
Q

DNS Resolver/DNS Cache

A

makes a local copy of every DNS entry it resolves when connecting to websites

45
Q

Recursive Lookup

A

DNS server communicates with several other DNS servers to hunt down the IP address and return to the client.

46
Q

Iterative lookup

A

Each DNS server responds directly to the client with an address for another DNS server that may have the correct IP address

47
Q

What do you need to know about DNS for the exam?

A

-How DNS works (DNS records)

A+ (114 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions