Networking Flashcards
What is the local host?
The computer that’s in front of you
What is a host?
Any computing device connected to a network
What’s a remote host?
Any computing device on the network or reachable beyond the network
What’s a server?
The remote computer that serves the Web site
What’s the client?
Your compuuter
What is the term that describes how data is transferred from one device to another?
Frames
What does UTP stand for?
Unshielded Twisted Pair
What’s a crossover cable?
A standard UTP cable with one RJ-45 connector using the T568A standard and other other using a T568B standard.
The signal between sending and receiving wires and thus does the job of a hub or switch. Crossover cables work great as a quick way to connect two computers directly for a quick and dirty network.
Out of the different Fiber Cables, which one is designed to support two fiber cables in one connectiion?
ST
SC
LC
Newer connectors like LC are designed to support two fiber cables in one connecter, a real space saver.
How does multimode Fiber Optic cabling work?
Uses LEDs (light emitting diodes) to send light signals
Multimode fiber transmits multiple light signals at the same time, each using a different reflection angle within the core of the cable.
The multiple reflection angles tend to disperse over long distances, so Multimode fiber optic cables are used for relatively short distances.
Multimode networks run:
10 Mbps
100 Mbps
1000 Mbps
SOME can go 10,000 Mbps
DISTANCE: 600 meters
How does Single-mode Fiber Optic cabling workk?
Uses laser light
Allows for phenomenally high transfer rates over long distances
100 Terabits per second
Over 100 miles
What is the Ohm impedance of an RG-6 and RG-59 coaxial cable?
75-Ohms
What is a LAN?
A Local Area Network
A group of computers located physically close to each other—no more than a few hundred meters apart at most.
What is a broadcast domain?
A group of computers connected by one or more switches
What is a bridge?
A device that connects dissimilar network technologies that transmit the same signal
What’s the difference between Solid Core and Stranded Core UTP cables?
Each wire in solid core UTP uses a single solid wire. With stranded core, each wire is actually a bundle of tiny wire strands
Solid core is a better conductor, but it is stiff and will break if handled too often or too roughly.
Stranded core is not quite as good a conductor, but it will stand up to substantial handling without breaking.
What’s a punchdown tool used for?
Securing UTP connections to a punchdown block
What’s a WAN?
Wide Area Network
You connect LANs into a WAN with a magical box called a router (see Figure 20-41). The best example of a WAN is the Internet.
How many bits are in a MAC address?
48
Which of the following is an example of a hybrid topology?
A. Bus
B. Ring
C. Star
D. Star bus
D. Star Bus
Why would you use STP (Shielded Twisted Pair) over UTP (Unshielded Twisted Pair) cabling?
Shielded twisted pair cabling handles interference from other electronics much better than unshielded twisted pair.
Which of the following network standards can operate at two different channel widths on the same spectrum simultaneously
802.11n
What is an industry standard protocol used by computer networks to assign IP Addresses to network nodes and devices?
DHCP
You need to configure a SOHO network to provide IP Addresses to devices on the network. Which feature should be enabled?
DHCP
