Unit 5 TCP/IP Flashcards

1
Q
  • Written as a subscript to a number
A

Radix

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2
Q

Radix for Decimal

A

10

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3
Q

Radix for Binary

A

2

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4
Q

Radix for Hexadecimal

A

16

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5
Q

is always furthest to the right

A

LSD

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6
Q

is always furthest to the left

A

MSD

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7
Q

Place holder is a

A

Zero

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8
Q

A logical numeric address assigned to every computer, printer,
switch, router or other device that is part of a TCP/IP-based network

A

IP address

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9
Q

Numbers written in form of 32 bits in four groups of eight binary
components referred to as

A

octets

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10
Q

 Address format to represent a binary IP address in a more user-friendly
manner is referred to as

A

dotted decimal notation

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11
Q

205.112.45.60 what kind of IP address

A

dotted decimal notation

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12
Q

 Largest octet number is

A

255

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13
Q

 Composed of network number and host number

A

IP address

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14
Q

Identifies specific network
 Must be assigned by IANA or authorized representative

A

Network number

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15
Q

ID’s specific host or node
 Assigned by local network administrator

A

Host number

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16
Q

 Each IPv4 address belongs one of five classes of IP addresses
depending on the number in the first

A

octet

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17
Q

First three classes - A, B and C - used by

A

network administrators

18
Q

Other two classes, D and E, are

A

reserved

19
Q

o Used for large networks
o Decimal addresses 1-126 in first octet
o Zero (0) is the first binary bit of the first octet
o Last 23 bits identify host or node number
o 126 class A networks with 16,777,214 hosts on each network
o 0 and 127 reserved for special purpose; 127 is special number called
loopback address

A

Class A

20
Q

o Used for intermediate sized networks
o Decimal addresses 128-191 in first octet
o First two binary bits (10) of first octet identify Class B address
o Next 14 bits, identify network number
o Last sixteen bits (2 octets) identify host or node number
o About 16,384 possible Class B networks with potentially 65,534 hosts on
each network

A

Class B

21
Q

o Used for small networks
o Decimal addresses 192-223 in first octet
o First three binary bits (110) of first octet identify Class C address
o Next 21 bits, identify network number
o Last eight bits (1 octet) identify host or node number
o About 2,097,152 Class C networks with 254 possible hosts or nodes on
each network

A

 Class C

22
Q

o Reserved for multicast (designated recipients) addressing
o Decimal addresses 224-239 in first octet
o First four binary bits (1110) of first octet identify Class D address and
together with the rest of address, identify network number
o Multicast is a membership addressing function that has no host field.

A

 Class D

23
Q

o Reserved for research and development
o Decimal addresses 240-254 in first octet
o First four binary bits (1111) of first octet identify Class D address and,
together with rest of the address, identify network number
o Octet value 255 is reserved for special use.

A

 Class E

24
Q

 Logical division of network of
connected network devices based on IP
address
 Separate and identifiable portion of an
organization’s network, typically
arranged on one floor, building or
geographical location
 Network within a network

A

Subnetting

25
Q

 Involves dividing the network into smaller portions called subnets
 Applies to IP addresses because borrowing bits from the host
portion of the IP address
 IP address then has three components - the network part, the
subnet part and, the host part
 Create a subnet by logically grabbing last bit from network
component of address and use it to determine number of subnets
required

A

Subnetting

26
Q

 Class C address normally has 24 bits for
the network address and

A

eight for the
host

27
Q

 Borrow left-most bit of the host address
and declare it as

A

identifying the subnet

28
Q

subnetting: If bit is a 0, then that will be

A

1 subnet

29
Q

Subnetting: If the bit is a 1 that would be

A

second subnet

30
Q

32-bit number used to differentiate network component of IP address by
dividing IP address into network address and host address
Indicates how many bits are being “borrowed” from host component of IP
address

A

Subnet masks

31
Q

subnet masking: represents network number

A

255

32
Q

adapts the concept of
subnetting to entire Internet
Can aggregate networks into larger supernets
Supernetting, where principles of subnetting are applied to larger networks
Written out in network/mask format, where mask is tacked onto network
address in form of number of bits used in mask

A

 Classless Internet Domain Routing (CIDR)

33
Q

Used when subnetting a subnet
Any one subnet can be broken down into further subnets by indicating the Makes IP addressing more efficient by allowing each subnet to have a
different number of hosts
results in reducing the number of wasted addresses
proper?

A

Variable Length Subnet Masking (VLSM)

34
Q

 Not all IP addresses are available; some are used for special
purposes
 Any IP address ending in 255 is special broadcast address
 Other addresses are used for special signaling, including
o Multicast routing mechanisms
o Limited broadcasts sent to every host, but limited to the local subnet
o Directed broadcasts first routed to a specific subnet, and then broadcast to
all hosts on that subnet

A

Private IP addresses

35
Q

10.0.0.1 to 10.255.255.255

A

: Provides a single Class A network of addresses

36
Q

172.16.0.1 to 172.31.255.254

A

: Provides 16 contiguous Class B network
addresses

37
Q

192.168.0.1 to 192.168.255.254

A

: Provides up to 216 Class C network
addresses

38
Q

Only portion of “172” and “192” address ranges are designated for

A

private use

39
Q

All addresses in range 127.0.0.0 up to 127.255.255.255 for loopback
testing
127.0.0.1 is loopback address used in almost all cases

A

Loopback Addresses

40
Q

Addresses in the range 169.254.0.0/16 are auto-assigned by host (to itself)
if not configured with static IP and is unable to obtain a DHCP lease
Are auto-assigned; should not be used for private networks and statically
configured on hosts

A

Internet Protocol Version 6 (IPv6)

41
Q

New version of Internet Protocol, replacing IPv4
* Increases IP address size from 32 bits to 128 bits
* 128-bit number supports 2128 values, or
340,282,366,920,938,463,463,374,607,431,768,211,456
possible IP addresses
* Eliminates need for CIDR and network mask as used in IPv4

A

IPv6