Chapter 5

Protocols?
Languages that all the computers understand. It makes managing the OS easier.
How many conductors are in an RJ-45 Connector?
Describe the Physical Layer of the OSI Model.
The bottom of the OSI model which represents the hardware that forms the network
Describe the different parts of the Data-Link layer?
Data-link header and footer, they perform the same functions as the envelope foes for a letter, protecting the contents and displaying the address of the recipient.
Describe the TCP Protocol
Part of network layer, The protocol that Windows uses as DEFAULT at the network and transport layers are collectively called TCP/IP (Transmission Control Protocol and IP is Internet Protocol.
Describe the IP Protocol.
IP is the network layer protocol that perfoms many important networking functions. IP is the primary end-to-end protocol used on most data networks. IP is responsible for the complete transmission of a packet from its source to its final destination on another network.
What is the purpose of the subnet mask.?
Used for network and host identification
In what class is the address of 152.17.75.212?
Class B
What is the default subnet mask for a Class A network address?
Class A- 255.0.0.0 IP 0-127
Subnet mask for a Class B network address?
Class B – 255.255.0.0 IP 128-191
Subnet mask for a Class C network address?
Class C – 255.255.255.0 IP 192-223
Private address ranges for a Class A, B, C, and D networks.
Class A 10.0.0-10.255.255.255
Private address ranges for a Class B networks.
Class B 172.16.0.0-172.31.255.255
Private address ranges for a Class C networks.
Class C 192.168.0.0-192.168.255.255
What is NAT and why do businesses find it useful?
Most networks today that use private IP addresses provide their computers with Internet access using a technology such as NAT network address translation. NAT is a feature built into many routers that takes the packets destined for the internet that are generated by the computers on a private network, substitues a registered address for the computers private address, and the forwards the packets to the Internet destinations. An entire private network can share a single registered address.
What is APIPA, and its address range.
Automatic Private IP Addressing 169.254.0/16
What does it mean when a computer has an APIPA address on its network interface?
Enables a small network with no DHCP server to communicate without the need for manual configuration
What type of address is the FCC0:0:0:0B5D:FF:BE3B:F4F7:3311?
IPv6
Describe Unicast addressing in IPv6.
Unicast: Identifies a single network interface in a computer or other device. Packets addressed to a unicast address are delivered to one node only.
Why are IPv6 Global addresses important?
They are unique throughout the IPv6 universe.
Node-local?
Limited to an individual interface. This is the equivalent of the loopback address in IPv4
Teredo?
A tunneling protocol that enables computers to transmit IPv6 packets through NAT routers that do not support IPv6
Describe the 2 parts of a socket.
The combination of an IP address and a port number is called a socket. A web server application using HTTP port an an IP address of 192.168.x.x cab be identified by the socket 192.168.x.x:80
The IPv4 is broken into two parts. List and describe the two parts.
You have a computer that cannot communicate on the network. You find out that it has been assigned an IPv4 address of 169.254.0.5 with a subnet mask of 255.255.0.0. What is the problem?
Describe the netsh.exe command and what we can do with it. 169 NETSH.exe is a powerful tool that you can interactively or with command line parameters to configure virtually any Windows 7 networking setting
Firewall
is a software routine that acts as a virtual barrier between a computer and the network to which it is attached
Network Discovery
Computers configured with the HOME and WORK locations have Network Discovery turned ON, and Public computers have it turned OFF
Network Connection
Disabling a network connection doe not affect its configuration settings in any way. The networking hardware is still installed and configured and the TCP/IP setting remain intact.
Correct name for RJ45 connectors?
8P8C connectors
Classless inter-domain routing (CIDR)
To avoid assigning entire addresses of a particular class to networks that didnt have many host, the IETF eventually published a new standard for assigning IP addresses