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CompTIA A+ 1101 (Core 1) (Retired) > 2.5 - Install & configure basic wired/wireless SOHO networks > Flashcards

2.5 - Install & configure basic wired/wireless SOHO networks Flashcards

1
Q

What do IPv4 addresses consist of?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4

A

4 octets, each separated by periods

192.168.1.131

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2
Q

What do IPv6 addresses consist of?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv6

A

8 groups of 4 hexadecimal numbers separated by colons

fe80:0000:0000:0000:5d18:0652:cffd:8f52 (fe80::5d18:652:cffd:8f52)

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3
Q

Configuration parameters needed to assign an IP address to device?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A
  • IP address
  • Subnet mask
  • Default gateway address
  • Primary DNS address
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4
Q

What do devices use subnet masks for?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

To identify the network & host portions of an IP address

Subnet masks divide IP addresses into network and host portions

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5
Q

What can subnet masks help devices determine about destination IP addresses?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

If the destinatinion IP address is in the same LAN or different network

Device IP: 192.168.1.100
Dest. IP address: 192.168.1.150
Subnet mask: 255.255.255.0
Result for both: 192.168.1.0 (both are in the same LAN)

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6
Q

What do gateways allow?

2.5 - Install & configure basic wired/wireless SOHO networks: Gateway

A

Devices to communicate outside their subnet

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7
Q

What is a gateway address?

2.5 - Install & configure basic wired/wireless SOHO networks: Gateway

A

A gateway device’s private IP address used for communication between networks

Networks like the Internet

i.e. Routers, UTMs, NAS devices, VMs, Firewalls, Proxies, Layer 3 Switches, etc.

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8
Q

What is each octet’s value range in IPv4?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4

A

0-255

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9
Q

What is each group’s value range in IPv6?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv6

A

0000-FFFF

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10
Q

How do private IP addresses differ from public IP addresses?

2.5 - Install & configure basic wired/wireless SOHO networks: IP - Private Addresses

A

By only being used within a network & not accessible from public networks

which provides protection/anonymity to client devices, ensures their re-use on other LANs, & conserves IPv4 addresses

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11
Q

How do public IP addresses differ from private IP addresses

2.5 - Install & configure basic wired/wireless SOHO networks: IP - Public Addresses

A

By communicating with public networks

i.e. a DNS server IP address

Public networks like the Internet

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12
Q

How do private networks access the internet?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

Using a gateway device

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13
Q

What do gateway devices allow?

i.e. routers, utms, etc.

2.5 - Install & configure basic wired/wireless SOHO networks: Gateway

A

LAN devices to communicate with other networks by using the gateway address for outgoing traffic

(The gateway address is the gateway’s public IP address) Does NOT give the networked devices a public IP address.

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14
Q

2 types of IP addresses gateway devices have?

A

Public & Private (gateway) IP addresses

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15
Q

What are the 3 private IP address ranges?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4 - Private Addresses

A

Class A, B, & C addresses

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16
Q

Reserved private IP address ranges

Class A private IPv4 address range?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4 - Private Addresses

A

10.0.0.0 - 10.255.255.255

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17
Q

Reserved private IP address ranges

Class B private IP address range?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4 - Private Addresses

A

172.16.0.0 - 172.31.255.255

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18
Q

Reserved private IP address ranges

Class C private IP address range?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4 - Private Addresses

A

192.168.0.0 - 192.168.255.255

19
Q

What are public IP addresses assigned to? By who?

T-Mobile Router

2.5 - Install & configure basic wired/wireless SOHO networks: IP - Public Addresses

A

Customer equipment by ISPs

20
Q

What type of addresses do SOHO routers have?

(its a gateway device)

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

Private & dynamic public IP addresses for internal & Internet communication

21
Q

Meaning of NAT?

A

Network Address Translation

22
Q

How do routers allow data transmission between private & public networks?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

By using NAT

23
Q

What does NAT do?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

Converts LAN IP addresses to the gateway address as data crosses the gateway

24
Q

NAT keeps devices hidden behind…?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

a gateway device while being able to communicate outside the LAN

gateway device like a router

25
Q

What are MAC addresses aka?

2.5 - Install & configure basic wired/wireless SOHO networks

A

Physical addresses

26
Q

What are IP addresses aka?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

Logical addresses

27
Q

2 types of addresses in SOHO networks?

2.5 - Install & configure basic wired/wireless SOHO networks

A
  • MAC addresses
  • IP addresses

Can be either IPv4 or IPv6

28
Q

Reserved Looback/localhost IPv4 address range?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4

A

127.0.0.0 - 127.255.255.255

29
Q

Reserved Link-local IPv4 address range?

(APIPA)

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4

A

169.254.0.0 - 169.254.255.255

30
Q

What is a loopback address?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4

A

IP address used for self-testing & internal communication within a device

31
Q

Common IPv4 loopback address?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4

A

127.0.0.1

32
Q

Common IPv6 loopback address?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv6

A

::1

33
Q

Why are Private addresses reserved for private networks?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

To be reused on other LANs

34
Q

When may a device be assigned a temporary link-local address?

2.5 - Install & configure basic wired/wireless SOHO networks: IP

A

When it cant connect to DHCP server

35
Q

What can devices do with link-local addresses?

2.5 - Install & configure basic wired/wireless SOHO networks: IPv4

A

Can only communicate within its network

Can’t communicate outside the LAN until a valid IPv4 address is obtained

36
Q

What is a link-local address known as in Windows?

2.5 - Install & configure basic wired/wireless SOHO networks

A

APIPA address

37
Q

How does a device ensure it has a unique APIPA address?

2.5 - Install & configure basic wired/wireless SOHO networks: APIPA

A

By broadcasting the APIPA address & using it if there’s no response

38
Q

What could it mean if a device can communicate with LAN devices but not the internet?

2.5 - Install & configure basic wired/wireless SOHO networks

A

DHCP server is down, so it has an APIPA address instead

39
Q

Meaning of APIPA?

2.5 - Install & configure basic wired/wireless SOHO networks: APIPA

A

Automatic Private IP Addressing

40
Q

Alternative to manual IP address assignment?

2.5 - Install & configure basic wired/wireless SOHO networks

A

DHCP reservations

41
Q

How do DHCP reservations reserve IP addresses for devices?

2.5 - Install & configure basic wired/wireless SOHO networks

A

by configuring their MAC addresses in DHCP server

42
Q

What are DNS server addresses?

2.5 - Install & configure basic wired/wireless SOHO networks

A

IP addresses of the DNS server

which converts domain names to IP addresses

43
Q

When do you need to specify the gateway address to a device?

2.5 - Install & configure basic wired/wireless SOHO networks: Gateway

A

When configuring a device with a static IP address

else, it can be assigned via DHCP

CompTIA A+ 1101 (Core 1) (Retired) (23 decks)

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