Bits & Bytes: Week 2, I - the Network Layer Flashcards

1
Q

A ___ address changes depending on your LAN; a ___ changes depending on which device you use

A

IP; MAC

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2
Q

ACRONYM: ARP

A

Address Resolution Protocol

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3
Q

ACRONYM:

DHCP

A

Dynamic Host Configuration Protocol

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4
Q

ACRONYM:

QOS

A

Quality of Service

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5
Q

ACRONYM:

TTL

A

Time to Live

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6
Q

Each network package contains a payload that encloses all necessary information, protocols, and data for each succesive network layer. What is this process called?

A

Encapsulation

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7
Q

How does a node find the MAC address of a device that doesn’t have an entry in its ARP table?

A

It sends a broadcast Address Resolution Protocol message to the MAC broadcast address and the device with the matching address responds with the data it needs

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8
Q

How long is an IP address in bits? In octets?

A

32 bits; 4 octets

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9
Q

How many bytes is the minimum for an IP header?

A

20 bytes

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10
Q

If the first bit of a binary IP address is 0, which IP class does that address belong to?

A

IP Class A

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11
Q

What would the following binary sequence look like as an IP address:

00001100 . 00100010 . 00111000 . 01001110

A

12.32.56.78

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12
Q

Technology that allows communication across very long distances almost instantaneously is part of this layer.

A

The Network Layer

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13
Q

This class of IP address contains the network ID in the first two octets and the host ID in the last two octets

A

Class B IP Address

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14
Q

This class of IP address contains the network ID in the first three octets and the host ID in the last octet

A

Class C IP address

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15
Q

This field contains a 16 bit number used to group (but not necessary order) separate IP Datagrams together that are part of the same transmission

A

the Identification Field

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16
Q

This field contains values needed by the receiving end to correctly order a fragmented datagram

A

the Fragment Offset Field

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17
Q

This field is used to set special characteristics for datagrams and is primarily used for testing purposes

A

the IP Options Field

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18
Q

This field of an IP Datagram Header can be used to specify details about Quality of Service technologies

A

the Service Type Field

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19
Q

this is a list of IP address and the MAC addresses associated with them

A

Address Resolution Protocol Table

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20
Q

This is a way of defining how the global IP address space is split up

A

Address Class System

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21
Q

this is the process of taking a single IP datagram and splitting it up into several smaller datagrams

A

fragmentation

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22
Q

This protocol is used to discover the hardware address of a node within a certain IP address

A

Address Resolution Protocol

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23
Q

This field contains the max number of routers a IP Datagram can traverse before it is thrown away

A

the TTL field

24
Q

This IP Datagram Header field contains data about which transport layer protocol is being used.

A

The Protocol Field

25
Q

Which IP Datagram Header field immediately follows the TTL field? How many bits?

A

The Protocol Field; 8 bits

26
Q

This IP Datagram Header field is a series of zeros at the end of the header to ensure the header is the correct size

A

the Padding Field

27
Q

VHS TIFF Ttl Sip Dip OP

A

Components of an IP Datagram Header

28
Q

What allows routers to make decisions about an IP Datagram’s level of importance?

A

Quality of Service Technologies

29
Q

What are the two sections of an IP address?

A

The Network ID and the Host ID

30
Q

What does the data payload section of an ethernet frame consist of?

A

the IP Datagram Header and it’s payload

31
Q

What field comes after the version field in an IP Datagram Header? How many bits?

A

the Header Length field; 4 bits

32
Q

What field follows the header length field in an IP Datagram Header? How many bits?

A

Service Type Field; 8 bits

33
Q

What field follows the Service Type field in an IP Datagram Header? How many bits?

A

the Total Length Field; 16 bits

34
Q

What information is contained in the first octet of a Class A IP address?

A

the Network ID

35
Q

What information is contained in the last three octets of a Class A IP address?

A

the Host ID

36
Q

What is the decimal range that can be represented by 1 octet?

A

0 to 255

37
Q

What is the first field of an IP Datagram header? How many bits?

A

Version field; 4 bits

38
Q

What is the maximum size of an IP datagram?

A

65,535 bits

39
Q

What is the range of values for the first octet of a Class A IP address?

A

0 - 127

40
Q

What is the range of values for the first octet of a Class C IP address?

A

192 - 223

41
Q

What is the range of values for the first octet of a Class B IP address?

A

128 - 191

42
Q

What is the name of a data packet at the Network Layer?

A

an IP Datagram

43
Q

What IP Datagram Header field follows the IP Options field?

A

the Padding Field

44
Q

Which field in the IP Datagram Header follows the flag field?

A

the Fragmentation Offset Field

45
Q

Which field is used to indicate if a datagram is allowed to be fragmented or has been fragmented?

A

the Flag Field

46
Q

Which field of the IP Datagram Header follows the identification field?

A

the Flag Field

47
Q

Which IP Datagram Header field indicates the total length of the IP datagram?

A

The Total Length Field

48
Q

Which IP Datagram Header field follows the destination IP address field?

A

The IP options field

49
Q

Which IP Datagram Header field follows the Fragmentation Offset Field? How many bits?

A

the TTL field; 8 bits

50
Q

Which IP Datagram Header field follows the Header Checksum field? How many bits?

A

The Source IP Address; 32 bits

51
Q

Which IP Datagram Header field follows the Protocol field?

A

The Header Checksum Field

52
Q

Which IP Datagram Header field follows the Source IP Address field? How many bits?

A

The Destination IP Address field; 32 bits

53
Q

Which IP Datagram Header field follows the total length field?

A

the Identification Field

54
Q

________ IP addresses are generally reserved for servers and network devices; _________ IP addresses are generallu reserved for clients

A

static; dynamic

55
Q

What class of IP address has a 0 as the left most bit?

A

Class A

0.0.0.0 - 127.255.255.255

1st bit range: 00000000. - 01111111.

56
Q

What class of IP address has a 10 as the left most bit?

A

Class B

128.0.0.0 - 191.255.255.255

1st bit: 10000000. - 10111111

57
Q

Which class of IP address has 110x as its left most bit?

A

Class B

192.0.0.0 - 223.255.255.255

1st bit: 11000000. - 11011111