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84 Cards in this Set
- Front
- Back
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At a basic level, what is a network?
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A group of two or more interconnected computers sharing information and resources.
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Name two types of Networks
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LAN- Local Area Network
WAN- Wide Area Network |
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Based on coverage area, what is a LAN?
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Coverage is confined to a limited area such as a room, office, or building.
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Based on coverage area, what is a WAN
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Coverage connects LANs and can extend between cities and countries.
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What are the three organizational models of Networks?
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Peer to Peer
Client / Server Domain-based |
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What are the most common wired network topologies?
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Bus, Star, Ring, Mesh
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Which of the most common wired network topologies is the most expensive to implement?
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Mesh topology
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How many bits make up a Media Access Control address?
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48 bits
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What notation is used to express a Media Access Control address?
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12 Hex characters
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What are the characteristics of 10Base5 - Thick Ethernet?
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Used for Bus topology
Maximum segment length of 500 meters of RG-8 cable. Supports up to 100 devices per segment. Data speeds up to 10Mbps |
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What device is used on a 10base5 bus network cable to prevent signal reflections?
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50 ohm terminator
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How close can the connections be to each other on a 10base5 bus network?
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No closer that 2.5 meters to each other.
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What device provides the physical connection to the 10base5 network cable?
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A transceiver or Access Unit Interface (AIU)
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What is the maximum allowable distance between the AIU and the computer?
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No further than 50 meters
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What are the characteristics of 10Base2- Thin Ethernet (Thinnet)?
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Used for Bus topology
Maximum segment length of 185 meters of RG-58 coax cable. Supports up to 30 devices per segment. Data speeds up to 10Mbps |
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What are the terminating requirements for a 10base2 (Thinnet) bus network?
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The segment must have two end-point terminators to eliminated reflections. And, one of the terminators must be grounded.
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What standards body control the specifications for UTP cabling?
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Telecommunication Industry Association/Electronics Industries Alliance - TIA/EIA 568
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What are the Categories for UTP and their maximum data speeds?
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Cat1: Phone line
Cat2: 4 Mbps (ISDN & T1) Cat3: 16 Mbps Cat4: 20 Mbps Cat5: 100 Mbps Cat5e: 1 Gbps Cat6: 10 Gbps |
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What does Bandwidth mean?
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The measure of the amount of data that can be transmitted across a network connection in a fixed period of time
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What are three types of data transfer protocols?
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Full-Duplex
Half-Duplex Simplex |
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What are six common Network protocols?
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TCP/IP
IPX/SPX NELink NetBIOS NetBEUI AppleTalk |
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What is the NWLink network protocol?
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It is Microsoft's version of IPX/SPX for Windows platforms.
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Which network protocol does the Internet use?
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TCP/IP
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What is the importance of IP address 127.0.0.1
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This is a loopback (localhost) address reserved for network testing.
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What are the characteristics of a Class A IP network?
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1 to 126 address range
129 networks 16,777,214 hosts |
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What are the characteristics of a Class B IP network?
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128 to 192 address range
16,384 networks 65,534 hosts |
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What are the characteristics of a Class C IP network?
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192 to 223 address range
2,097,152 networks 254 hosts |
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What are Class D and Class E IP networks?
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Class D is used for Multicast
Class E is for experimentation |
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What is the range of private Class A addresses?
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10.0.0.1
to 10.255.255.254 |
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What is the range of private Class B addresses?
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172.16.0.1
to 172.16.255.254 |
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What is the range of private Class C addresses?
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192.168.0.0 to 192.168.255.254
& 169.254.0.1 to 169.254.255.254 (APIPA) Automatic Private IP Addressing |
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How many bits make up an IPv6 address?
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128 bits or 16 bytes
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What are the two most common network hardware protocols?
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Ethernet
Token Ring |
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Which network hardware protocol dominates the network landscape today?
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Ethernet
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What are the two types of coax cable used in an Ethernet bus topology network?
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RG-8 for Thicknet
RG-58 for Thinnet |
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What access method do nodes use on a Ethernet bus topology?
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CSMA/CD
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What are the three Ethernet cabling types?
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Coax
UTP Fiber Optic |
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What is the color code for 568B?
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White/Orange -1
Orange -2 White/Green -3 Blue -4 White/Blue -5 Green -6 White/Brown -7 Brown -8 |
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What is the color code for 568A
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White/Green -1
Green -2 White/Orange -3 Blue -4 White/Blue -5 Orange -6 White/Brown -7 Brown -8 |
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In a 10BaseT network what is the maximum allowable distance between a Hub and Node?
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100 meters
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Theoretically, in a 10BaseT network what is the maximum number of nodes a hub can support?
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1024 nodes
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What is the maximum number of PCs a Token Ring network can support using Shielded Twisted Pair (STP) cabling?
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260 PCs
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What is the maximum number of PCs a Token Ring network can support using Unshielded Twisted Pair (UTP) cabling?
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72 PCs
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What is the maximum allowable distance between the MAU and the computer on a Token Ring network using Shielded Twisted Pair (STP) cabling?
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100 meters
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What is the maximum allowable distance between the MAU and the computer on a Token Ring network using Unshielded Twisted Pair (UTP)cabling?
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45 meters
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What is the LAN network topology of a Token Ring network?
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A logical ring topology using an MSAU to form a physical star topology connection to all nodes.
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What is the LAN network topology of a Ethernet network?
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A logical bus topology using a Hub to form a physical star topology connection to all nodes.
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In Windows 2000/2003, what are the navigation steps to get to the Network Identification Wizard?
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Right-click My Computer
- Click Properties -- Click Network Identification tab --- Click Network ID button |
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In Windows XP, what are the navigation steps to get to the Network Identification Wizard?
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Right-click My Computer
- Click Properties -- Click Computer Name tab --- Click Network ID button |
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What are the transmission data rates for USB 2.0 and 1.1 devices?
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USB 2.0 at 480 Mbps
USB 1.1 at 12 Mbps |
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What are some key characteristics of FireWire?
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IEEE 1394a support 400Mbps.
IEEE 1394b supports 1600Mbps. Daisy-chain up to 63 FireWire devices. Supports Hot-swapping devices. |
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What are commonly used fiber optic network cable connector types?
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MT-RJ : Mechanical Transfer Registered Jack
ST SC LC |
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What are some characteristics of the MT-RJ fiber optic cable connector?
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Connects small form factor devices.
Support full-duplex data transfer. Similar appearance to RJ-45 |
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What are some characteristics of the ST fiber optic cable connector?
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Has a long straight tip center conductor.
Uses a push-and-turn-to-lock round collar. Support single-mode or multimode fiber |
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What are some characteristics of the SC fiber optic cable connector?
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Has a square molded plastic case.
Uses a push/pull locking action. Support single-mode or multimode fiber. Most common in fiber optic Ethernet networks |
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What are some characteristics of the LC fiber optic cable connector?
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Small form factor connector resembling an SC connector.
Support single-mode or multimode fiber. Used in high-density interconnections |
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Characteristics of the 802.11a Wi-Fi standard:
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- 5 GHz frequency
- 54 Mbps max data rate - 150 feet max distance - or 20 meters -approximately - WEP,WAP,SSID,and MAC filtering - Eight usable channels |
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Characteristics of the 802.11b Wi-Fi standard:
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- 2.4 GHz frequency
- 11 Mbps max data rate - 300 feet max distance - or 100 meters -approximately - WEP,WAP,SSID,and MAC filtering - Eleven usable channels - Three non-overlapping channels |
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Characteristics of the 802.11g Wi-Fi standard:
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- 2.4 GHz frequency
- 54 Mbps max data rate - 300 feet max distance - or 100 meters -approximately - 802.11b compatible - WAP,SSID, and MAC filtering - Eleven usable channels - Three non-overlapping channels |
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What are three technologies that Broadband supports?
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Cable modem
Digital Subscriber Line (DSL) Satellite |
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What infrastructure or medium does DSL use to deliver services to a computer?
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Uses existing copper phone lines
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Which type of network technology enables devices to communicate across countries?
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Wide Area Network (WAN)
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Which wireless technology communicates by dividing various geographical regions into sections?
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Cellular
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Which network cable connectors do you use to connect small form factor devices in a network via fiber optic cable?
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LC connector
MT-RJ connector |
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What are the key characteristics of plenum cabling?
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Coated in a fire-retardant cladding
Installed in the air-handling space such as above ceiling or below floor |
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Characteristics of the Infrared Data Association (IrDA) standard:
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4 Mbps max rate
1 meter max distance No security Point-to-Point ad-hoc |
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Characteristics of Bluetooth
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FHSS broadcast method
2.45 GHz range. Hops across 79 frequencies 1600 times per second. 723Kbps to 1Mbps data rates 10 meters max range |
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What are three common Cellular network protocols?
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Global System for Mobile Communications (GSM).
General Packet Radio Service (GPRS). Code Division Multiple Access (CDMA). |
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In Microsoft Windows, what are the three graphical states for the Local Area Connections icon in the Network Connection window?
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Active
Disabled Disconnected |
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In Microsoft Windows, what is the graphical appearance of an active Local Area Connections icon in the Network Connection window?
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An Icon of two small cascaded computer monitors with light blue screens.
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In Microsoft Windows, what is the graphical appearance of a disabled Local Area Connections icon in the Network Connection window?
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An Icon of two small cascaded computer monitors with gray screens.
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In Microsoft Windows, what is the graphical appearance of a disconnected Local Area Connections icon in the Network Connection window?
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An Icon of two small cascaded computer monitors with light blue screens and a red X to show a disconnect. If configured, a monitor icon with a red X is displayed on the taskbar.
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What are the characteristics of the state indicator LEDs on a Network Interface Card?
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One LED should display steady illumination to indicate a good network connection.
Another LED should randomly blink to indicate activity on the cable. |
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What should you do if a data collision light indicates collision on a router or computer?
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Check the NIC cable for proper connection to its port.
Check the IP address and name for conflicts on the network. Wait for a few moment to see it the network resolves the issue. |
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1. What must be installed on a computer to provide a physical and electrical connection to a network?
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Network Interface Card (NIC)
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2. After physically installing a PnP NIC, what else might be needed to configure the NIC?
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Device driver
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3. How far apart can two PCs be that share the same 100BaseT switch?
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200 meters
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4. Under ideal conditions what is the maximum data rate and range for the 802.11g standard?
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54 Mbps at 300 feet
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5. What is the minimum specification cable category that can support 100BaseT networks?
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CAT 5
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6. What cabling is needed to connect two stand-alone computers together using Ethernet peer-to-peer connection?
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Crossover cable
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7. What are the TIA/EIA standards for connecting an RJ-45 connector to UTP cables?
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568A
568B |
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8. Which TCP/IP utility would you use if you suspect that a computer has a problem with its DHCP issued IP address?
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ipconfig /renew
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9. Which wireless network encryption protocol offers the best security?
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WPA2
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10. Bluetooth enabled computers can link into what type of wireless network?
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Personal Area Networks (PAN)
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