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LDCE Data network > IP Addressing > Flashcards

IP Addressing Flashcards

1
Q

IPv4 multicast address
1) Class C
2) Class D
3) Class E

A

Class D
224.0.0.0/4

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2
Q

128.0.0.0—-191.255.255.255 indicates
1) Class B
2) Class C
3) Class D
4) Class E

A

Class B

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3
Q

192.0.0.0—-223.255.255.255 indicates
1) Class B
2) Class C
3) Class D
4) Class E

A

Class C

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4
Q

224.0.0.0—–239.255.255.255 indicates
1) Class B
2) Class C
3) Class D
4) Class E

A

Class D
IPv4 multicast address

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5
Q

240.0.0.0—–255.255.255.254 indicates
1) Class B
2) Class C
3) Class D
4) Class E

A

Class E

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6
Q

224.0.0.0/4
1) Link-local addresses
2) Loop-back addresses
3) used to communicate within the current network
4) IPv4 multicast address

A

Class D
IPv4 multicast address

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7
Q

169.254.0.0 – 169.254.0.16 :
1) Link-local addresses
2) Loop-back addresses
3) used to communicate within the current network
4) IPv4 multicast address

A

Link-local addresses

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8
Q

127.0.0.0 – 127.255.255.255 :
1) Link-local addresses
2) Loop-back addresses
3) used to communicate within the current network
4) IPv4 multicast address

A

Loop-back addresses

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9
Q

0.0.0.0 – 0.0.0.8:
1) Link-local addresses
2) Loop-back addresses
3) used to communicate within the current network
4) IPv4 multicast address

A

used to communicate within the current network

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10
Q

Choose private IP address(es)
1) 10.0.0.0 to 10.255.255.255
2) 172.16.0.0 to 172.31.255.255
3) 192.168.0.0 to 192.168.255.255

A

all of them

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11
Q

______ assigns public addresses
1) IANA
2) ICANN

A

ICANN (The Internet Corporation for Assigned Names and Numbers0

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12
Q

The bits in the network mask is set to ____ to treat the corresponding bit in the IP address as part of host number
1) 0
2) 1

A

set to 0
set 1 for network part

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13
Q

VLSM stands for

A

Variable Length Subnet Mask
- traditional method is FLSM, fixed length

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14
Q

CIDR stands for

A

Classless Inter Domain Routing

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15
Q

Given an IP address, its class can be determined from the ______ high-order bits
1) 2
2) 3
3) 4

A

3 bits

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16
Q

IPv4 multicast address
1) 192.0.0.0/4
2) 224.0.0.0/4
3) 240.0.0.0/4

A

224.0.0.0/4

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17
Q

Routers use the network-prefix to determine the dividing point between the network number and the host number
1) CIDR
2) classful

A

CIDR
Classless Inter Domain Routing

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18
Q

An inter-domain gateway protocol
1) Border Gateway Protocol
2) OSPF

A

Border Gateway Protocol

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19
Q

An intra-domain gateway protocol
1) Border Gateway Protocol
2) OSPF

A

OSPF

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20
Q

Which of the following supports CIDR
1) Routing Information Protocol
2) Border Gateway Protocol
3) OSPF
4) Exterior Gateway Protocol

A

2) Border Gateway Protocol
3) OSPF

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21
Q

IPv6 address size
1) 64-bit
2) 128-bit
3) 256-bit

A

128-bit

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22
Q

IPv6 supports
1) Stateless autoconfiguration
2) Jumbograms
3) Anycast
4) Multicast

A

all of these
Stateless autoconfiguration: The ability for nodes to determine their own
address
Jumbograms: The ability to have very large packet payloads for greater
efficiency
Anycast: Redundant services using nonunique addresses
Multicast: Increased use of efficient one-to-many communications

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23
Q

If you do not specify a prefix length for an IPv6 address, the default prefix length is
1) /32
2) /64
3) /96

A

/64

24
Q

IPv6 address length can be reduced by
1) zero compression
2) zero suppression
3) both

A

both

25
Q

In IPv6 address, a double colon (::). can appear ________ in the address
1) only once
2) only twice
3) any times

A

only once
- otherwise total length cannot be derived

26
Q

IPv6 can eliminate
1) NAT Network Address Translation
2) Application Layered Gateway

A

both

27
Q

IPv6 header is only __ times as bigger than IPv4
1) 2 times
2) 4 times
3) 8 times

A

2 times
(but IPv6 address is four times longer)

28
Q

IPv6 supports _______ auto
configuration mode of its host devices
1) stateful
2) stateless

A

both stateful and stateless.
This way, absence of a DHCP server
does not put a halt on inter segment communication.

29
Q

IPsec security is _______ in the IPv6 protocol specification
1) mandated
2) optional

A

mandated

30
Q

Routers, while routing, send the packet to the nearest destination. This refers to
1) multicast
2) anycast
3) broadcast
4) narrowcast

A

anycast
(IPv6 has introduced Anycast)
anycast address is essentially a unicast address assigned to multiple devices with a host ID = 0000:0000:0000:0000.

31
Q

The IPv6 addresses assigned to an
interface can be
1) unicast address
2) multicast address
3) anycast address

A

all of them

32
Q

Each IPv6 address type has a scope
1) link-local scope
2) unique-local scope
3) global scope

A

any of these

33
Q

IPv6 addresses are unique only in a subnet or a local network
1) link-local scope
2) unique-local scope
3) global scope

A

link-local scope

34
Q

IPv6 addresses are unique in private networks or between organizations
1) link-local scope
2) unique-local scope
3) global scope

A

unique-local scope

35
Q

The MAC address of a system is
composed of ____-bits
1) 32 bits
2) 48 bits
3) 64 bits

A

48 bits

36
Q

First, a host divides its own MAC address into two 24-bits halves.
Then 16-bit Hex value 0xFFFE is sandwiched into those two halves of MAC address, resulting in _____ ID.
1) Interface ID
2) EUI-64 ID
3) IPv6 ID

A

EUI-64 ID

37
Q

In IPv6, the three most significant bits of
Global Routing Prefix is always set to _____ to indicate a unicast address
1) 110
2) 100
3) 001
4) 101

A

001

38
Q

If host address all bits are 0, it indicates
1) network address
2) Broadcast address
3) loopback address
4) all networks

A

network address
- for a network segment

39
Q

If host address all bits are 1, it indicates
1) network address
2) Broadcast address
3) loopback address
4) all networks

A

Broadcast address
- for all nodes in the specified network segment

40
Q

If network address =127 with any host address, it indicates
1) network address
2) Broadcast address
3) loopback address
4) all networks

A

loopback address

41
Q

If host and network address all bits are 1, it indicates
1) network address
2) Broadcast address
3) loopback address
4) all networks

A

Broadcast address
- for all nodes in the current network segment

42
Q

If host and network address all bits are 0, it indicates
1) network address
2) Broadcast address
3) loopback address
4) all networks

A

all networks
- used to specify the default route

43
Q

Interface ID is unique within the specific
1) prefix
2) subnet
2) prefix and subnet

A

prefix and subnet

44
Q

Global IPv6 address form: global routing prefix has _____ bits
1) 16
2) 45
3) 48
4) 64

A

45
48 bits prefix: ‘001’+45 bits
16 bits subnet
64 bits interface ID

45
Q

Global IPv6 address form: interface ID has _____ bits
1) 16
2) 45
3) 48
4) 64

A

64
48 bits prefix: ‘001’+45 bits
16 bits subnet
64 bits interface ID

46
Q

Global IPv6 address form: subnet has _____ bits
1) 16
2) 45
3) 48
4) 64

A

16
48 bits prefix: ‘001’+45 bits
16 bits subnet
64 bits interface ID

47
Q

Auto-configured IPv6 address is known as
1) link-local address
2) unique-local address
3) global address

A

Link-Local address

48
Q

___ address always starts with FE80
1) link-local address
2) unique-local address
3) global address

A

link-local address

49
Q

link-local address address always starts with
1) 001
2) FE80
3) FFFF
4) FF80

A

FE80

50
Q

A router never forwards these IPv6 addresses
1) link-local address
2) unique-local address
3) global address

A

link-local address

51
Q

These addresses are useful for establishing communication across a link in the absence of a globally routable
prefix.
1) link-local address
2) unique-local address
3) global address

A

link-local address

52
Q

A router can be installed with both IPv4 and IPv6 addresses
1) multi stack
2) dual stack
3) multi IP
4) dual IP

A

dual stack

53
Q

This consists of encapsulating IPv6 packets within IPv4, in effect using IPv4 as a link layer for IPv6.
1) translation
2) tunneling
3) dual stack

A

tunneling

54
Q

Technologies used for smooth transition from IPv4 to IPv6.
1) replacing IPv4 routers with IPv6
2) using dual stack routers
3) tunneling
4) using NAT-PT enabled device

A

2,3,4
NAT-PT: Network Address Translation – Protocol Translation

55
Q

smooth transition from IPv4 to IPv6 is supported by NAT-PT enabled devices.
NAT-PT stands for

A

Network Address Translation – Protocol Translation

56
Q

Classless routing tables a usually stored in a hierarchical data structure called a
1) binary tree
2) route tree
3) address tree

A

binary tree

LDCE Data network (6 decks)

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