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87 Cards in this Set
- Front
- Back
What are the 7 layers of the OSI model?
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-Physical, -Data Link, -Network, -Transport, -Session, -Presentation, -Application
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Which layers of the OSI model defines the method of moving data between computers and includes cabling and hubs and involves electrical signals?
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Physical layer
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How many bits make up a MAC address?
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48
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How many Hex characters make a MAC address?
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12
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What is the broadcast address for a MAC address?
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FF-FF-FF-FF-FF-FF
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What layer of the OSI model do NICS, Frames, and MAC addresses operate at and also provides error checking?
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Data Link Layer 2
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What are the two sublayers of the data link layer?
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-LLC (Logical link control)
-MAC (Media access control) |
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Which sublayer of Layer 2 data link, is responsible for communicating with layers 3 and 1 of the OSI model and creates the CRC on each frame?
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LLC
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Which sublayer of the layer 2 data link, is responsible for attaching the MAC address to the frames and sending the frames along the cable?
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MAC
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What is the minimum and maximum size of an ethernet frame?
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-64 bytes
-1518 bytes |
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What devices operate at the data link layer 2?
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-Bridges
-Switches -NIC's |
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What protocols operate at the data link layer 2?
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-Ethernet
-Token Ring -ATM |
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What layer is responsible for creating packets and giving each device on a network a unique logical address called an IP address?
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Network layer 3
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What device operates at the network layer?
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Routers
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What protocol is used at the network layer 3?
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-IP (Internet Protocol)
-IPX (For Novell) -ICMP |
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What layer of the OSI model breaks up data, assembles and disassembles packets, assigns sequence numbers, and is responsible for transport end to end reliability through port numbers?
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Transport layer 4
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What protocol operates at the Transport layer 4?
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-TCP
-UDP -SPX -Netbeui |
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This layer is responsible for breaking data up and assigning sequence numbers?
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Transport layer 4
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What are the 2 layers where error checking occurs?
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-Data Link layer 2
-Transport layer 4 |
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Which layer of the OSI model initiates sessions, accepts incoming sessions, and opens and closes existing sessions?
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Session layer 5
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What protocol operates at the session layer 5?
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NETBIOS
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What layer of the OSI model handles the conversion of data into formats that are readable by the system, such as compression, encryption, ASCII?
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Presentation layer 6
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Which layer of the OSI model operates within the code built into applications such as operating systems that make the programs network aware? and what is the name of the code that does this
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-Application layer 7
-API's (Application programming interfaces) |
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What frequency does CAT3 operate at?
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16MHz
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What is the bandwidth of CAT3?
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16Mbps
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What frequency does CAT4 operate at?
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20MHz
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What is the bandwidth of CAT4?
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20Mbs
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What frequency does CAT5 operate at?
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100MHz
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What is the bandwidth of CAT5?
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100Mbs
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What frequency does CAT5e operate at?
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100MHz
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What is the bandwidth of CAT5e?
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1000Mbps
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What frequency does CAT6 operate?
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250MHz
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What is the bandwidth associated with CAT6?
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10000Mbps
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Shielded twisted pair cable (STP) is used to protect the cable from what?
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EMI (electro-magnetic interference)
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The twisting of wires within a CAT5e cable help to reduce what effect?
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Crosstalk
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What is the name of the connector used in a telephone jack?
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RJ11
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What is the name of the connector used in on a UTP cable for interfacing with devices such as NIC's and hubs?
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RJ45
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What type of cable is unaffected by EMI?
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Fiber-optic
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What is the most common size of fiber-optic cable?
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62.5/125um
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Fiber-optic cable that uses LEDs is known as what?
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Multimode fiber
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Fiber-optic cable that uses lasers is known as what?
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Single-mode fiber
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What is the wavelength used in fiber-optic technologies that use LEDs to transmit the signal?
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850 nm
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What wavelengths are used in fiber-optic technologies that use lasers to transmit their signals?
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-1310 nm
-1550 nm |
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What are the 3 common types of connectors used on fiber-optic cable?
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-ST
-SC -LC |
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Of the 3 types of connectors used on fiber-optic cable, which one is used in duplex to accept 2 fiber cables?
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LC
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What networking industry standard (IEEE) oversees ethernet?
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IEEE 802.3
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What networking industry standard (IEEE) oversees wireless specification such as Wi-Fi?
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IEEE 802.11
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What is the maximum speed and distance for 10BaseT?
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-10 Mbps
-100 meters |
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What is the minimum Category cable that can be used for 10BaseT?
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CAT3
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What is the maximum speed and distance for 10BaseFL?
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-10 Mbps
-2 Km |
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What type of cable and connectors are used with 10BaseFL?
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-Multimode fiber
-ST or SC connectors |
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What is "fast ethernet"?
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100BaseT
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What is the maximum speed and distance for 100BaseT?
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-100 Mbps
-100 Meters |
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What is the minimum category of cable that can be used with 100BaseT?
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CAT5e
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What is the maximum speed and distance of 100BaseFX?
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-100 Mbps
-2 Km |
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What type of cable is used for 100BaseFX and what type of connectors are used?
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-Multimode fiber
-ST or SC connectors |
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What is the maximum speed and distance of 1000BaseSX?
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-1000 Mbps
-220-500 meters |
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What type of cable and connectors are used with 1000BaseSX?
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-Multimode fiber
-LC connectors |
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What is the maximum speed and distance of 1000BaseLX?
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-1000 Mbps
-5 Km |
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What type of fiber and connectors are used with 1000BaseLX?
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-Single-mode fiber
-LC and SC connectors |
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What is the maximum speed and distance for 1000BaseT?
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-1000 Mbps
-100 Meters |
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What is the size of an IP address?
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32 bits
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What is a connection oriented protocol that uses port numbers?
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TCP
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What are 3 different protocols used for email?
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-SMTP
-POP3 -IMAP4 |
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What is the port number for SMTP?
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25
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What is the port number for POP3?
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110
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What is the port number for IMAP4?
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143
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What is the port number for HTTP?
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80
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What is the port number for HTTPS?
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443
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What protocol is used by the web?
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HTTP
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What protocol is used by the web for secure transmission of data?
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HTTPS
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In order for an internet application to be secure it must have what 3 components?
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-Authentication
-Encryption -Nonrepudiation |
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What protocol is used with the Ping command, that handles mundane issues such as disconnect messages?
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ICMP
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What port number is used by TFTP?
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69
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What address will a computer get if it tries to automatically get an IP address from a dhcp server but recieves no response?
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-APIPA address
-169.254 |
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What term refers to manually assigning a default IP address instead of allowing an APIPA address if a system is unable to get a dhcp address from a server?
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Alternate configuration
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What device is a multiport repeater where anything that is sent to the device is sent to every port on the device?
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Hub
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What device uses a shared Collision domain and a shared Broadcast domain.
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Hub
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What device operates on MAC addresses and are protocol independent?
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Switch
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Do switches have a shared collision domain or a independent collision domain?
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Independent
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Do switches have a shared broadcast domain or an independent broadcast domain?
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Shared
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What device has both an independent collision domain and an independent broadcast domain?
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Router
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What protocols are specific to routers that the device themselves use? Name 3
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-BGP
-OSPF -LSA |
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Which routing protocol is the "glue of the internet" that uses autonomous system numbers that is a distance vector protocol?
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BGP
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What routing protocol is a link state protocol that is used to exchange CHANGES in the routing table (not the entire routing table) and uses area id's.
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OSPF
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How often is OSPF updated?
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Whenever there is a change or every 30 minutes
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How often are RIP and distance vectors updated?
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every 30 seconds
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