Local Area Networking Flashcards
What does the Subnet Mask do?
Distinguishes which part of the IP address identifies the network ID and which part of the address identifies the host.
What’s a router?
It helps manage your internal network
A device that has at least two IP addresses: One that connects to your LAN’s switch and one that connects to the “next network.”
That next network could be your Internet service provider (ISP) or another router at your company.
What’s Dynamic Host Control Protocol (DHCP)?
DHCP (Dynamic host configuration protocol) is a protocol that assigns IP addresses to network devices on a LAN.
If you have DHCP (most networks do) and your computer is configured to obtain an IP address automatically, your computer boots up and will broadcast a DHCP request.
What’s a DNS
They’re special computers, called domain name service (DNS) servers, that keep databases of IP addresses and their corresponding names.
For example, let’s say a machine with the IP address 209.34.420.163 hosts a Web site and we want it to be known as www.totalsem.com. When we set up the Web site, we would pay for a DNS server to register the DNS name www.totalsem.com to the IP address 209.34.420.163.
What is the connection-oriented protocol used with TCP/IP called? What are it’s features?
Transmission Control Protocol (TCP)
TCP/IP is the group of standards that different computers use to all be able to talk to each other on the Internet.
TCP gets an application’s data from one machine to another reliably and completely
What is the connectionless-oriented protocol used with TCP/IP called? What are it’s features?
User Datagram Protocol (UDP)
UDP is the “fire and forget” missile of the TCP/IP protocol suite. UDP doesn’t possess any of the extras you see in TCP to make sure the data is received intact.
There’s a good reason to use UDP: it’s smoking fast compared to TCP.
How many bits does IPv4 and IPv6 use?
32 bits
128 bits
What do computers that use IPv6 need to access the internet?
A global address
What’s the most prominent feature of setting up a domain?
You don’t have to set up local accounts on each computer. We call this feature single sign-on
What do homegroups share by default?
Libraries
Not Folders.
What command would you use to view the path taken by an Ethernet packet?
The “tracert” command in Windows traces the path a data packet takes to get to its destination. Mac OS X and Linux use the traceroute utility for similar purposes
Which of the following is the correct net syntax for discovering which network shares on a particular server are mapped on your computer?
To see the network shares mapped on your computer, use net view \fileserver.
What small device enables you to test a NIC’s circuitry?
Loopback plug
Which command can be used to display the cached NetBIOS names for a Windows system?
Nbtstat -c displays the cached names.
