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IP Engineering > Week 1: IP & MAC PDU Format > Flashcards

Week 1: IP & MAC PDU Format Flashcards

1
Q

What is the Preamble of an IEEE802.3 MAC Frame made of?

A

Alternating 1’s & 0’s

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2
Q

How many bytes long is the Preamble of an IEEE802.3 MAC Frame?

A

7 Bytes

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3
Q

What is the Start Frame Delimiter (SDF) Binary value?

A

10101011

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4
Q

How many bytes long is the SDF of an IEEE802.3 MAC Frame?

A

1 Byte

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5
Q

How many bytes long is the Destination Address in an IEEE802.3 MAC Frame?

A

6 Bytes

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6
Q

How many bytes long is the Source Address in an IEEE802.3 MAC Frame?

A

6 Bytes

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7
Q

How many bytes long is the Length or Type field in an IEEE802.3 MAC Frame?

A

2 Bytes

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8
Q

How many bytes long is the CRC Field in an IEEE802.3 MAC Frame?

A

4 Bytes

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9
Q

What is the average byte length range of an IEEE802.3 MAC Frame?

A

64 to 1518 Bytes

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10
Q

What fields compose an IEEE802.3 MAC Frame?

A 
Preamble (7 Bytes)
SFD (1 Byte)
Destination Address (6 Bytes)
Source Address (6 Bytes)
Length or Type (2 Bytes)
Data & Padding (variable Byte length)
CRC (4 Bytes)
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11
Q

How many Bytes are in a MAC Address?

A

6 Bytes (48 bits)

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12
Q

What do the left 3 Bytes in a MAC Address indicate?

A

The vendor

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13
Q

What do the right 3 Bytes in a MAC Address indicate?

A

Interface Card

this is Network Interface Controller (NIC) specific!

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14
Q

What are the left 3 bytes in a Multicast MAC Address?

A

01:00:5E

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15
Q

What is the MAC Address for a Broadcast?

A

FF:FF:FF:FF:FF:FF

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16
Q

What is the min-max range of bytes for an IPv4 Datagram?

A

Min. 20 Bytes, Max 60 Bytes

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17
Q

How many bits long is the Source IP Address field in an IPv4 Datagram?

A

32 Bits

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18
Q

How many bits long is the Destination IP Address field in an IPv4 Datagram?

A

32 bits

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19
Q

How many bits long is the Version field in an IPv4 Datagram?

A

4 bits

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20
Q

How many bits long is the Header Length field in an IPv4 Datagram?

A

4 bits

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21
Q

How many bits long is the Priority & Type of Service field in an IPv4 Datagram?

A

8 bits

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22
Q

How many bits long is the Identification field in an IPv4 Datagram?

A

16 bits

23
Q

How many bits long is the Flag field in an IPv4 Datagram?

A

3 bits

24
Q

How many bits long is the Fragmented Offset field in an IPv4 Datagram?

A

13 bits

25
Q

How many bits long is the Time to Live field in an IPv4 Datagram?

A

8 bits

26
Q

How many bits long is the Protocol field in an IPv4 Datagram?

A

8 bits

27
Q

How many bits long is the Header Checksum field in an IPv4 Datagram?

A

16 bits

28
Q

How many bits long is the Options field in an IPv4 Datagram?

A

0 or 32 bits

29
Q

What field indicates the existence of optional headers in an IPv4 Datagram?

A

The Header Length field

30
Q

What value indicates the length of the optional field(s)?

A

Any value more than 5

31
Q

How many bits long is an IPv4 Address?

A

32 bits

32
Q

What does the IP Address define?

A

A unique and universal connection of a device to the Internet

33
Q

What is the total address space for IPv4?

A

2^32 or 4,294,967,296

34
Q

What are the notation types for IPv4 address?

A

Dotted-Decimal and Binary Notation

35
Q

What are the 5 Address Classes?

A 
A (8 Network Bits, 24 Host Bits)
B (16 Network Bits, 16 Host Bits)
C (24 Network Bits, 8 Host Bits)
D (Multicast)
E (Research)
36
Q

What is the Default CIDR subnet mask for Class A Addresses?

A

/8

255.0.0.0

37
Q

What is the Default CIDR Subnet mask for Class B Addresses?

A

/16

255.255.0.0

38
Q

What is the Default CIDR Subnet mask for Class C Addresses?

A

/24

255.255.255.0

39
Q

What is the Multicast Address Range?

A

224.0.0.0 to 239.255.255.255

40
Q

What are the 2 subtypes of Unicast Addressing?

A

Public & Private

41
Q

What are the 4 properties of Private Addresses?

A

Private IP’s are NOT routable through the Internet
Secure
Save IP Address Space
Network Address Translation (NAT)

42
Q

For Reserved Addresses, what does an address of all 0’s mean?

A

“This network or segment”

43
Q

For Reserved Addresses, what does an address of all 1’s mean?

A

“All Networks”

44
Q

For Reserved Addresses, what does the address 127.0.0.1 mean?

A

Loopback tests

45
Q

For Reserved Addresses, what does a Node address of all 0’s mean?

A

Interpreted to mean “network address” or any host on specified network

46
Q

For Reserved Addresses, what does a Node address of all 1’s mean?

A

Interpreted to mean “all nodes” on the specified network

47
Q

For Reserved Addresses, what does a full IP address set to all 0’s mean?

A

Used by Cisco Routers to designate the default route.

48
Q

For Reserved Addresses, what does a full IP address set to all 1’s mean?

A

Same as broadcast to all nodes on the current network (255.255.255.255)

49
Q

What is the Address Range for Class A?

A

0 - 127

50
Q

What is the Address Range for Class B?

A

128 - 191

51
Q

What is the Address Range for Class C?

A

192 - 223

52
Q

What is the Address Range for Class D?

A

224 - 239

53
Q

What is the Address Range for Class E?

A

240 - 255

54
Q

What are the 3 Private Address Segments?

A
  1. 0.0.0 /8 (10.0.0.0 - 10.255.255.255)
  2. 16.0.0 /12 (172.16.0.0 - 172.16.255.255)
  3. 168.0.0 /16 (192.168.0.0 - 192.168.255.255)

IP Engineering (15 decks)

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