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INFOTECH 21 - Networking > Topic #14: IPv4 (2) > Flashcards

Topic #14: IPv4 (2) Flashcards

1
Q

These are addresses used in networks that require limited or no Internet access

A

Private Addresses

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2
Q

These are required in order to allow Internet Access to private addresses

A

NAT (Network Address Translation)

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3
Q

These are the addresses designed to have access on the Internet and carry the user wherever they want to go

A

Public Addresses

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4
Q

These are addresses that will be forwarded by a router and most can’t be assigned to a device

A

Special IP Address

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5
Q

List of Special IP Addresses

A

Network Address
Broadcast Address
Default Route
Loopback Addresses
Link-Local Addresses
Test-Net Addresses

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6
Q

this is a special address that refers to the first address of any network

A

Network Address

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7
Q

this is a special address that refers to the last address of any network

A

Broadcast Address

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8
Q

this is a special address that refers to the address when a specific route is not available

A

Default Route.

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9
Q

this is a special address that is used to test the configuration of TCP/IP on the local host

A

Loopback Addresses (124.0.0.0 /8)

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10
Q

this is a special address that can be automatically assigned to the local host by the OS in environments where no IP configuration is available

A

Link-Local Addresses (169.254.0.0 /16)

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11
Q

this is a special address that is set aside for teaching and learning purposes

A

Test-Net Addresses (192.0.2.0 /24)

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12
Q

Number of possible networks and hosts in Class A

A

2^7 nets with 2^24-2 hosts per net (around 16 Million host addresses per network)

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13
Q

Number of possible networks and hosts in Class B

A

2^14 nets with 2^16-2 hosts per net (around 65, 000 hosts per network)

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14
Q

Number of possible networks and hosts in Class C

A

2^21 nets with 2^8-2 per net (around 254 hosts per network)

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15
Q

Limitation of Classful Addressing

A

*not all organizations addressing requirements fit well into one of the three classes
*wasted address space

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16
Q

the system of addressing currently in use

A

classless addressing

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17
Q

Why must one plan an addressing scheme

A

*prevention of duplication
*providing and controlling access
*monitoring security and performance

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18
Q

Types of Hosts

A

End Devices
Servers and Peripherals
Hosts accessible in the Internet
Intermediary Devices

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19
Q

Addressing wherein the network aadministrator is the one that manually configures the network information for a host

A

Static Addressing

20
Q

In Static Addressing, what needs to be included

A
  • host IP address
  • subnet mask
  • default gateway
21
Q

these are a block of addresses where in the DHCP server defines in order to be assigned to the DHCP clients on a network

A

Address Pool

22
Q

On Addressing Servers and Peripherals

A
  • must be static
  • use consistent numbering system for such devices
23
Q

On Addressing Hosts that are accessible from the Internet

A
  • these are usually servers so they must be static
  • must have a public space address associated
  • numbered using private addresses
  • router and firewall must be configured in order to translate the internal address of the network into a public address
24
Q

On Addressing Intermediary Devices

A
  • must be layer 3 addresses
  • don’t necessarily need IPv4 to operate but need one in order to access for troubleshooting
  • must be predictable -assigned manually
  • must be different range from the network block
25
Q

On Addressing Routers and Firewalls

A
  • IPv4 Address
  • In different networks since it serves as the gateway for hosts in that network
  • usually uses the lowest and highest address in the network
  • must be uniform across all networks in the corporation in order to know the gateway of the network
  • group different types into logical addressing groups
  • could create rules to address the group devices in order to have few security rules
26
Q

this is the master holder of IP addresses

A

IANA (Internet Assigned Numbers Authority)

27
Q

RIR

A

Regional Internet Registeries

28
Q

AfriNIC

A

African Network Network Information Centre

29
Q

APNIC

A

Asia Pacific Network Information Centre

30
Q

ARIN

A

American Registry for Internet Numbers

31
Q

LACNIC

A

Regional Latin-American and Caribbean IP Address Registry

32
Q

RIPE NCC

A

Resaux IP Europeans

33
Q

ISP

A

Internet Service Provider

34
Q

Services that an ISP provide

A

DNS Services
E-Mail Services
Website

35
Q

This Tier of ISPs is directly connected to the Internet backbone, customers are usually lower-tiered ISPs or large companies, use multiple connections to the Internet backbone, reliable and speed but high cost

A

Tier 1

36
Q

This tier of ISPs focus on business customers, acquire service from tier 1 ISPs, and tend to have IT resources to operate their own services

A

Tier 2

37
Q

This tier of ISPs focus on serving small to medium companies and homes, purchase internet from tier 2 ISPs, they have reduced bandwidth with less reliability

A

Tier 3

38
Q

calculating the network address

A

the first in the address block or 00000000

39
Q

calculating the lowest network address

A

network address and .1 or 00000001

40
Q

calculating the broadcast address

A

01111111 of the host part of the address

41
Q

calculating the highest host address

A

01111110 of the host part of the address

42
Q

allows creating multiple logical networks from a single address block

A

Subnetting

43
Q

When a block of addresses is divided into subnets all having an equal number of addresses, the type of subnetting is called?

A

Fixed Length Subnetting (FLSM)

44
Q

Exam na ugma

A

Goodluck! Goodluck! Goodluck! Goodluck! Goodluck! Goodluck! Goodluck! Goodluck!

45
Q

Calculating a Subnet

A
  1. Determine the default subnet mask
  2. Determine the number of subnets needed and hosts needed on each to determine how many bits to borrow from the host ID.
  3. Figure the actual number of subnets and hosts by borrowing bits from host ID.
  4. Determine the subnet mask.
  5. Determine the ranges of host addresses for each subnet

INFOTECH 21 - Networking (14 decks)

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