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1/13 Szoftverfejlesztés > Network essentials 4 > Flashcards

Network essentials 4 Flashcards

1
Q

What is the prefix length notation for the subnet mask 255.255.255.224?

A

/27

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2
Q

How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?

A

62

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3
Q

Which subnet mask would be used if 5 host bits are available?

A

255.255.255.224

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4
Q

A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created?

A

4

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5
Q

An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet?

A

subnetwork 192.168.1.64

subnet mask 255.255.255.192

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6
Q

How many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks?

A

three

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7
Q

How many host addresses are available on the 192.168.10.128/26 network?

A

62

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8
Q

How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0?

A

1022

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9
Q

What three blocks of addresses are defined by RFC 1918 for private network use? (Choose three.)

A

10.0.0.0/8

172.16.0.0/12

192.168.0.0/16

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10
Q

A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?

A

255.255.255.128

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11
Q

What is the usable number of host IP addresses on a network that has a /26 mask?

A

62

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12
Q

Which address prefix range is reserved for IPv4 multicast?

A

224.0.0.0 – 239.255.255.255

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13
Q

A high school in New York (school A) is using videoconferencing technology to establish student interactions with another high school (school B) in Russia. The videoconferencing is conducted between two end devices through the Internet. The network administrator of school A configures the end device with the IP address 209.165.201.10. The administrator sends a request for the IP address for the end device in school B and the response is 192.168.25.10. Neither school is using a VPN. The administrator knows immediately that this IP will not work. Why?

A

This is a private IP address.

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14
Q

Which three addresses are valid public addresses? (Choose three.)

A

198.133.219.17
128.107.12.117
64.104.78.227

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15
Q

A message is sent to all hosts on a remote network. Which type of message is it?

A

directed broadcast

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16
Q

A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.)

A

192.168.1.64/27
192.168.1.96/28

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17
Q

Which address is a valid IPv6 link-local unicast address?

A

FE80::1:4545:6578:ABC1

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18
Q

Which of these addresses is the shortest abbreviation for the IP address: 3FFE:1044:0000:0000:00AB:0000:0000:0057?

A

3FFE:1044:0:0:AB::57

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19
Q

A network administrator has received the IPv6 prefix 2001:DB8::/48 for subnetting. Assuming the administrator does not subnet into the interface ID portion of the address space, how many subnets can the administrator create from the /48 prefix?

A

65536

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20
Q

Given IPv6 address prefix 2001:db8::/48, what will be the last subnet that is created if the subnet prefix is changed to /52?

A

2001:db8:0:f000::/52

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21
Q

What type of IPv6 address is FE80::1?

A

link-local

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22
Q

What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface?

A

the MAC address of the IPv6 enabled interface

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23
Q

What is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64?

A

2001:DB8:BC15:A

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24
Q

An IPv6 enabled device sends a data packet with the destination address of FF02::1. What is the target of this packet?​

A

all IPv6 enabled devices on the local link​ or network

25
Q

Which IPv6 prefix is reserved for communication between devices on the same link?

A

FE80::/10

26
Q

Which type of IPv6 address refers to any unicast address that is assigned to multiple hosts?

A

anycast

27
Q

What are two types of IPv6 unicast addresses? (Choose two.)

A

loopback

link-local

28
Q

Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?

A

SLAAC

29
Q

Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host?

A

ICMPv6

30
Q

A technician uses the ping 127.0.0.1 command. What is the technician testing?

A

the TCP/IP stack on a network host

31
Q

Which protocol is used by the traceroute command to send and receive echo-requests and echo-replies?

A

ICMP

32
Q

Which ICMPv6 message is sent when the IPv6 hop limit field of a packet is decremented to zero and the packet cannot be forwarded?

A

time exceeded

33
Q

A user executes a traceroute over IPv6. At what point would a router in the path to the destination device drop the packet?

A

when the value of the Hop Limit field reaches zero

34
Q

What is the purpose of ICMP messages?

A

to provide feedback of IP packet transmissions

35
Q

What source IP address does a router use by default when the traceroute command is issued?

A

the IP address of the outbound interface

36
Q

A user issues a ping 192.135.250.103 command and receives a response that includes a code of 1. What does this code represent?

A

host unreachable

37
Q

Which subnet would include the address 192.168.1.96 as a usable host address?

A

192.168.1.64/26

38
Q

A host is transmitting a broadcast. Which host or hosts will receive it?

A

all hosts in the same subnet

39
Q

A host is transmitting a unicast. Which host or hosts will receive it?

A

one specific host

40
Q

A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 3. What does this code represent?

A

address unreachable

41
Q

A host is transmitting a multicast. Which host or hosts will receive it?

A

a specially defined group of hosts

42
Q

Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0000:a0b0:0008:0001?

A

2001:db8::a0b0:8:1

43
Q

Which is the compressed format of the IPv6 address fe80:09ea:0000:2200:0000:0000:0fe0:0290?

A

fe80:9ea:0:2200::fe0:290

44
Q

Which is the compressed format of the IPv6 address 2002:0042:0010:c400:0000:0000:0000:0909

A

2002:42:10:c400::909

45
Q

Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0ab8:0001:0000:1000?

A

2001:db8::ab8:1:0:1000

46
Q

Which is the compressed format of the IPv6 address 2002:0420:00c4:1008:0025:0190:0000:0990?

A

2002:420:c4:1008:25:190::990

47
Q

Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0000:a0b0:0008:0001?

A

2001:db8::a0b0:8:1

48
Q

Which is the compressed format of the IPv6 address fe80:0000:0000:0000:0220:0b3f:f0e0:0029?

A

fe80::220:b3f:f0e0:29

49
Q

Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0000:a0b0:0008:0001?

A

2001:db8::a0b0:8:1

50
Q

Which is the compressed format of the IPv6 address 2002:0042:0010:c400:0000:0000:0000:0909?

A

2002:42:10:c400::909

51
Q

Which is the compressed format of the IPv6 address fe80:09ea:0000:2200:0000:0000:0fe0:0290?

A

fe80:9ea:0:2200::fe0:290

52
Q

A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 2 . What does this code represent?

A

beyond scope of the source address

53
Q

A user issues a ping 192.135.250.103 command and receives a response that includes a code of 1 . What does this code represent?

A

host unreachable

54
Q

A user issues a ping fe80:65ab:dcc1::100 command and receives a response that includes a code of 3 . What does this code represent?

A

address unreachable

55
Q

A user issues a ping 10.10.14.67 command and receives a response that includes a code of 0 . What does this code represent?

A

network unreachable

56
Q

A user issues a ping fe80:65ab:dcc1::100 command and receives a response that includes a code of 4. What does this code represent?
A user issues a ping fe80:65ab:dcc1::100 command and receives a response that includes a code of 4 . What does this code represent?

A

port unreachable

57
Q

A user issues a ping 198.133.219.8 command and receives a response that includes a code of 0 . What does this code represent?

A

network unreachable

58
Q

A user issues a ping 2001:db8:3040:114::88 command and receives a response that includes a code of 4 . What does this code represent?

A

port unreachable

59
Q

A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 2. What does this code represent?

A

beyond scope of the source address

1/13 Szoftverfejlesztés (11 decks)

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