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Network

  1. FTP Data Transfer Port
    20
  2. FTP Control Port
    21
  3. Telnet Port
    23
  4. SMTP Port
    25
  5. HTTP Port
    80
  6. POP3 Port
    110
  7. LDAP Port
    389
  8. HTTPS Port
    443
  9. DNS Port
    53
  10. DHCP Server Port
    67
  11. DHCP Client Port
    68
  12. How to determine the Network ID
    • Perform a logical AND with the binary form of the IP Address and Subnet Mask.
    • 0 AND 0 = 0
    • 1 AND 0 = 0
    • 0 AND 1 = 0
    • 1 AND 1 = 1
  13. Class A address range and # of hosts
    • 1 - 127 with 16,777,214 hosts - large corporations and governments
    • Default Subnet Mask = 255.0.0.0
  14. Class B address range and # of hosts
    • 128 - 191 with 65,534 hosts - medium to large networks
    • Default Subnet Mask = 255.255.0.0
  15. Class C address range and # of hosts
    • 192 - 223 with 254 hosts - small networks
    • Default Subnet Mask = 255.255.255.0
  16. Class D address range and # of hosts
    224 - 239 - can't be assigned to host - used for mutlicasting (video conferencing and streaming)
  17. Class E address range and use
    240 - 255 - Reserved for experimental use and cant be used for address assignment
  18. If all host bits are Binary 1s
    Broadcast Address
  19. If all host bits are Binary 0s
    This is the Network address
  20. What is 127.0.0.0 used for
    Loopback Address- used for testing the TCP/IP functions on a local computer
  21. localhost IP address
    127.0.0.1
  22. Class A private network address
    Begin with 10 (one Class A network address)
  23. Class B Private Network Address range
    Addresses from172.16 - 172.31 (16 Class B network addresses)
  24. Class C Private Network Address Range
    Addresses from 192.168.0 to 192.168.255 (256 Class C network addresses)
  25. Type of address received when no DHCP is available
    Automatic Private IP Addressing (APIPA) assigned in the range 169.254.1.0 to 169.254.254.255 with a subnet mask of 255.255.0.0 (this is a link-local address and aren't forwarded by routers
  26. Calculation for number of hosts on a network
    2^n - 2. n=# of bits in the Host ID
  27. What does the number in CIDR notation represent i.e. 172.31.210.10/24
    • It is the number of "1" bits in the network ID.
    • A network address has 32 bits so CIDR /24 would leave 8 bits for the Host ID
  28. Broadcast Domain
    All devices that share the same Network ID in their IP Address
  29. Subnetting creates how many networks out of a single network?
    Makes 256 smaller networks with a maximum of 2^8-2, or 254 devices per subnet.
  30. Why do we need subnets?
    To make the broadcast Domain more manageable. Thousands of computers on a single network would create too many broadcast packets. Subnetting also conserves IP addresses. You can assign a company specifically the number of Public IP addresses it needs vs standard class C address and wasting possible host addresses.
Author
Shifty67
ID
350419
Card Set
Network
Description
Updated

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