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Google IT Cert: Course 2 > Bits & Bytes: Week 2, I - the Network Layer > Flashcards

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
Which IP Datagram Header field immediately follows the TTL field? How many bits?
The Protocol Field; 8 bits
26
This IP Datagram Header field is a series of zeros at the end of the header to ensure the header is the correct size
the Padding Field
27
VHS TIFF Ttl Sip Dip OP
Components of an IP Datagram Header
28
What allows routers to make decisions about an IP Datagram's level of importance?
Quality of Service Technologies
29
What are the two sections of an IP address?
The Network ID and the Host ID
30
What does the data payload section of an ethernet frame consist of?
the IP Datagram Header and it's payload
31
What field comes after the version field in an IP Datagram Header? How many bits?
the Header Length field; 4 bits
32
What field follows the header length field in an IP Datagram Header? How many bits?
Service Type Field; 8 bits
33
What field follows the Service Type field in an IP Datagram Header? How many bits?
the Total Length Field; 16 bits
34
What information is contained in the first octet of a Class A IP address?
the Network ID
35
What information is contained in the last three octets of a Class A IP address?
the Host ID
36
What is the decimal range that can be represented by 1 octet?
0 to 255
37
What is the first field of an IP Datagram header? How many bits?
Version field; 4 bits
38
What is the maximum size of an IP datagram?
65,535 bits
39
What is the range of values for the first octet of a Class A IP address?
0 - 127
40
What is the range of values for the first octet of a Class C IP address?
192 - 223
41
What is the range of values for the first octet of a Class B IP address?
128 - 191
42
What is the name of a data packet at the Network Layer?
an IP Datagram
43
What IP Datagram Header field follows the IP Options field?
the Padding Field
44
Which field in the IP Datagram Header follows the flag field?
the Fragmentation Offset Field
45
Which field is used to indicate if a datagram is allowed to be fragmented or has been fragmented?
the Flag Field
46
Which field of the IP Datagram Header follows the identification field?
the Flag Field
47
Which IP Datagram Header field indicates the total length of the IP datagram?
The Total Length Field
48
Which IP Datagram Header field follows the destination IP address field?
The IP options field
49
Which IP Datagram Header field follows the Fragmentation Offset Field? How many bits?
the TTL field; 8 bits
50
Which IP Datagram Header field follows the Header Checksum field? How many bits?
The Source IP Address; 32 bits
51
Which IP Datagram Header field follows the Protocol field?
The Header Checksum Field
52
Which IP Datagram Header field follows the Source IP Address field? How many bits?
The Destination IP Address field; 32 bits
53
Which IP Datagram Header field follows the total length field?
the Identification Field
54
\_\_\_\_\_\_\_\_ IP addresses are generally reserved for servers and network devices; _________ IP addresses are generallu reserved for clients
static; dynamic
55
What class of IP address has a 0 as the left most bit?
Class A 0.0.0.0 - 127.255.255.255 1st bit range: 00000000. - 01111111.
56
What class of IP address has a 10 as the left most bit?
Class B 128.0.0.0 - 191.255.255.255 1st bit: 10000000. - 10111111
57
Which class of IP address has 110x as its left most bit?
Class B 192.0.0.0 - 223.255.255.255 1st bit: 11000000. - 11011111

Google IT Cert: Course 2 (14 decks)

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