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Network+ > Chapter 7: TCP/IP Basics > Flashcards

Chapter 7: TCP/IP Basics Flashcards

1
Q

What layers does TCP/IP operate at?

A

internet.

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2
Q

What are port numbers?

A

1 - 65535

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3
Q

What port number is HTTP?

A

80

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4
Q

What port number is POP3?

A

110

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5
Q

what is a subnet mask?

A

string of ones followed by zeros

-you line up address. portions that line up with ones are the network id, zeros that line up are the host id.

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6
Q

What is ARP?

A

Address Resolution Protocol: determine, MAC address based on destination IP
-arp -a shows windows current arp table

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7
Q

What is IANA?

A

Internet Assigned Numbers Authority

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8
Q

What is a class license?

A

IP address in contiguous chunks

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9
Q

What is the range for Class A adresses

A

1-126

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10
Q

Range for class b address?

A

128-191

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11
Q

Range for class C address

A

192-223

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12
Q

Range for class D addresses

A

224-239 (multicast)

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13
Q

Rand for class E addresses

A

240-254 (experimental)

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14
Q

What is CIDR?

A

Classes Inter-domain routing

  • virtually same thing as subnetting.
  • extend subnet mask by adding more network ID from host bits.
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15
Q

What is the formula for # of hosts in subnet?

A

2^x -2 wher x = number of host bits

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16
Q

What is the formula for # of subnets?

A

2^y where y=# bits added to the subnet mask.

17
Q

What are four unofficial standards?

A
  • give default gateway first IP address in the network id
  • use ip address in sequential order
  • separate servers form clients
  • write down whatever I choose to do.
18
Q

What is a DHCP scope?

A

-range of IP address DHCP server can pass out.

19
Q

What is APIPA?

A

Automatic Private IP addressing

-DHCP clients designed to generate APIPA autormatically if they do not receive a response to DHCP Discovery message.

20
Q

What ports do DHCP and BOOTP use?

A

UDP ports 67 and 68

21
Q

ipconfig /renew /release comands for Linux

A

sudo ifconfig eth0 down

sudo ifconfig eth0 up

22
Q

What are the three ranges of private ip addresses?

A
  1. 0.0.0 through 10.255.255.255 (1 class A license)
  2. 16.0.0 through 172.31.255.255(16 class B license)
  3. 168.0.9 through 192.168.255.255(256 class C license)

Network+ (15 decks)

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