Brainscape's Knowledge GenomeTM

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


See full index

Network+ > IPv4 Addressing > Flashcards

IPv4 Addressing Flashcards

1
Q

TCP/IP

A

Transmission Control Protocol/Internet Protocol

  • Suite of protocols and standards that provide functionality of most networks.
  • Provides logical addressing and packet forwarding between networks
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

IP Header

A

Contains fields that manage logical addressing and forwarding function.

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

Version Field (IP Header)

A
  • Indicates version of IP in use
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Length (IP Header)

A

Indicates size of header and total packet size, including payload.
- Max theoretical size is 65,535 bytes, but actually much smaller to avoid fragmentation in Ethernet frames

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

Protocol Field (IP Header)

A
  • Describes what is encapsulated in payload so the host knows how to process it
  • IP Protocol type value will indicate TCP (Transmission Control Protocol) or UDP (User Datagram Protocol)
  • Some protocols run directly on IP instead of Transport Layer
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

ICMP/1

A

Internet Control Message Protocol

  • Runs directly on IP rather than on Transport layer
  • used for status messaging and connectivity testing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

IGMP/2

A

Internet Group Messaging Protocol

  • Runs directly on IP rather than on Transport layer
  • used with multicasting
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

GRE/45

A

Generic Routing Encapsulation

  • Runs directly on IP rather than on Transport layer
  • Used to tunnel packets accross an intermediate network.
  • Used for some VPNs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

EIGRP/88 and OSPF/89

A

Enhanced Interior Gateway Routing and Open Shortest Path First

  • Runs directly on IP rather than on Transport layer
  • used by routers to exchange information about paths to remote networks
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Network Number (Network ID)

A
  • Number common to all hosts on same IP network
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The Host Number (Host ID)

A
  • Identifies a host within an IP network
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Network Mask

A
  • Distinguishes network ID and Host ID in IP address
  • Conceals host ID portion
  • Where there is a 1 in the mask, corresponding digit in IP address is part of network ID
  • 1s are always contiguous
  • /notation indications number of bits set to 1 in net mask
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

ARP

A

Address Resolution Protoclol

- Resolves IP Addresses to hardware addresses

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

Unicast Packet

A
  • Used by an IPv4 Host to communicate with single recipient

- Addressed to IP address of destination host

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

Broadcast

A
  • One means of communicating with multiple hosts
  • Can be performed by sending packet to network or subnet broadcast address
  • All hosts that share the same broadcast address receive the packet
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Multicasting

A
  • Allows one host to send contend to other hosts that have identified as interested in receiving hosts content.
  • Sent to special destination IP address configured for use with that multicast group
  • At layer 2, delivered using special range of MAC addresses
  • Intent to receive multicast is signaled by joining multicast group
  • IGMP is typically used to configure this
17
Q

Anycast

A
  • Means that a group of hosts has same IP Address
  • When router forwards packet to anycast group it uses a prioritization algorithm to select host that is “closest”
  • Allows for load balancing and failover
18
Q

VLANS

A

Virtual LANs

  • Each interface on managed switch can be assigned a VLAN ID
  • Different hosts on same cabling can be appear to be on different LAN segments
  • Each VLAN is a separate BD
19
Q

Other uses for Subnets

A
  • Security and administrative control

- Networks may use different physical or data link technologies

20
Q

Classful addressing

A
  • Allocates network ID based on first Octet of IP address
  • Can be identified using first octet:
    Class A: 1-126
    Class B: 128-191
    Class C: 192-223
21
Q

Public IP Address

A
  • Can be used to establish connection with other public IP addresses and hosts
  • Governed by IANA
  • Administered by ISPs
22
Q

Private IP Addresses

A
  • Non-routable ranges over the internet
  • Any org can use private addresses and multiple use them simultaneously
  • Can be used through NATing
  • Or through a proxy server
  • 10.0.0.0 - 10.255.255.255 (Class A Range)
  • 172.16.0.0 - 172.31.255.255 (Class B Range)
  • 192.168.0.0 - 192.168.255.255 (Clas C range)
23
Q

APIPA

A

Automatic Private IP Addressing

  • Means for clients that could not reach DCHP to communicate over LAN
  • If no response from DCHP, host sets its range to 169.254.1.1 - 169.254.254.254
  • Type of addressing is referred to as link local
24
Q

Class D addresses

A
  1. 0.0.0 - 239.255.255.255

- Used for multicasting

25
Q

Class E addresses

A
  • 240.0.0.0 - 255.255.255.255

- Experimental use and testing

26
Q

127.0.0.0 - 127.255.255.255

A

Loopback Addresses

  • Special address typically used to check that TCP/IP is installed corrected on local host.
  • Does not require physical interface to function.
27
Q

Subnet Addressing

A
  • Using whole octet boundaries in Network ID can be inflexible
  • Has 3 hierarchical levels: network ID, subnet ID and host portion.
  • Bits from host portion are allocated as subnet address
  • Mask is only used within the IP network
28
Q

Network Address

A
  • First address in network

- Cannot be assigned to host

29
Q

Broadcast Address

A
  • Last address in network or subnet

- Cannot be used for hosts

30
Q

Default Gateway

A
  • When destination IP address appears to be on different network or subnet, host forwards packet to here, instead of delivering locally

Network+ (36 decks)

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