Complete List of Terms and Definitions for CTP2007

Terms Definitions
TCP-IP model
 
Name the layers
What is this?
 
1) Link (aka Network interface)
2) Internet
3) Transport
4) Application
802.11 Clear to Send (CTS) frame 802.11 frame - a station responds to an RTS frame with one of these frames. It provides clearance for the requesting station to send a data frame. This frame provides collision control management by including a time value for which all other stations are to hold off transmission while the requesting stations transmits
What is Full duplex ethernet Type of ethernet that allows two stations to simultaneously send and recieve data 
Authentication frame Frame type used in a process whereby an access point either accepts or rejects the identity of a radio NIC. Used with 802.11
IEEE standard for wireless half duplex ethernet.
 
 
802.11 Wireless lan Is it Half or Full duplex?
POE (Power over ethernet) This technology provides:
 
Electrical power, along with data over category 5 cable in an Ethernet network
VDSL (Very High Bitrate dsl)
 
Provide the following:
Upload:?
Download:?
Distance:?
Type of DSL with
 
Download: 52 Mbps
Upload: 16 Mbps upload
Distance: 300m with slower speeds as the distance increases
Networking method with
 
Speed: 10 Mbps
Max Length: 500 Meters
Cable: RG-8 type coax
 
Thick Ethernet, 10 base 5
 
Provide the following
Speed: ?
Max Length: ?
Cable: ?
Flat network A network in which all stations can reach other without going through any intermediary hardware devices, such as a bridge or router
MAN large computer networks usually spanning a city
Packet switching aka datagram switching network communications method that groups all transmitted data, irrespective of content, type, or structure into suitably-sized blocks
Midspan PSEaka Power injector PSE Device located between the switch and the ethernet client that provides power over ethernet
IEEE 802.3-2005 Clause 33 IEEE Power over ethernet standard
Power Sourcing Equipment (PSE) The name of the device that provides the power for POE
RS-232 · T1 · E1 · Ethernet · DSL · 802.11 PHY At which OSI model layer do these functions occur? Name 2 functions occur in layer 1 (Physical Layer) of the OSI model.
OSI Model layer 3 - give the name OSI Model Network Layer - give the number
Type of frame relay service that is always connected What is a permanent virtual circuit (PVC)
Name two features of UDP Protocol with the following features:
 
Lightweight
Unreliable
 
Networking method with...
 
Speed: 10 Mbps
Max Length: 100 Meters
Cable: UTP
Connector: RJ-45
Twisted Pair Ethernet, 10baseT
 
Provide the following
Speed: ?
Max Length: ?
Cable: ?
Connector: ?
File server Server type that allows users to share files
DHCP
 
What are the main three things that it provides?
 
Explain the two step process?
A protocol that primarily provides these three things to the clients on a network:

Assigning dynamic IP address


Subnet mask 


default gateway

It follows this two step process:

Discovery - Client sends an IP broadcast requesting an IP address


Offer- A server provides the IP address to the client.
How does CSMA/CA work (3 steps) Collision prevention Technology that is used by wireless that:1) Listens and Waits for an idle period2) Sends data3) Waits for an ACK from the recipient
Convert binary to base 10: 11110000 Convert base 10 to binary: 240
802.11 Request to Send (RTS) frame 802.11 frame - A station sends one of these frames as the first step in a two-way handshake required before sending data frames.
 802.11 Management frames Group name for 802.11 frames that enable stations to establish and maintain communications
ADSL lite
aka universal DSL
 
Provide the following:
Download: ?
Upload: ?
Max Distance: ?
Type of DSL with
 
Download: 1.5 Mbps download
Upload: 512 kbps upload
Max Distance: 3km from provider
Provide two aspects of a bus network topology Networking system
 

Where everyone on a LAN shares the same signal


Collisions can occur between users
ATM A packet switching protocol that encodes data into small fixed-sized cells
ICMP designed for sending control and test messages across IP networks. Known for the "ping" command.
Convert binary to base 10: 11111100 Convert base 10 to binary: 252
Bridge An intelligent device used to extend the layer 2 network over a distance (not a switch but similar to one)
Mesh network topology A communications network in which there are at least two pathways to each node. If one of the paths fails, the other is still available.
FCS (Frame check sequence) Number that  is calculated based on the contents of a frame which is used to verify its integrity.
TCP-IP model layer 4 Application TCP-IP model layer that defines how host programs interface with transport layer services to use the network.
 
HTTP, Telnet, FTP, TFTP, SNMP, DNS, SMTP, X Windows, etc
PHY Abreviation used for the physical later of the network
Token ring IEEE 802.5 This local area network (LAN) technology that uses a special three-byte frame called a token that travels around the ring. The frames travel completely around the loop.
802.11g stats
 
Provide the following:
Speed, frequency, Indoor range, Outdoor range
Wireless technology with 54MBPS Maximum data rate that operates in the 2.4Ghz band. Max range indoor=150' outdoor=300'
WAN computer network that covers a broad area
HTTP The protocol that is used to access web pages.
The OSI model layer that... defines the electrical and physical specifications Description for the osi model Layer 1: Physical Layer
802.11a stats
 
Provide the following:
Speed, frequency, Indoor range, Outdoor range
Wireless technology with 54MBPS Maximum data rate that operates in the 5Ghz band. Max range indoor=50' outdoor=100'
Data Terminating Equipment (DTE) Telco term for the source of the signals on a network.  It is typically a terminal or computer.
Bus topology Network topology where a set of clients are connected via a shared communications line
Classless Inter-Domain Routing (CIDR) An IP address is interpreted in two parts: a network-identifying prefix followed by a host address within that network. Example 192.168.0.1/24 The number after the slash indicates how many bits are masked by the subnet mask
IEEE 802.11 IEEE wireless standard
virtual circuit A logical, rather than a physical, circuit.
802.11 Data frames Group name for 802.11 frames that carry packets from higher layers, such as web pages, printer control data, etc., within the body of the frame.
ADSL traits
 
Download:?
Upload:?
Max Distance:?
Type of DSL with the following traits
 
Download: 6 Mbps download
Upload: 640 kbps upload
Max distance: 3km
Star network topology LAN in which all nodes are connected to one central node that routes all data passing to and from them.
Frame relay
 
Provide two main characteristics
 
Wan link protocol with the following charactersitics
 
1) Data passes through multiple node points
2) It does not include error correction
Thick AP Feature rich wireless access point
Three-layered model (aka tiered) The division of networking equipment into three groups (Core, Distribution & Access) in order to provide a more reliable design
Circuit switching A type of communications in which a dedicated channel is established for the duration of a transmission.
Point to point (PTP) WAN link Provides a single, pre-established WAN communications path from the customer premises through a carrier network, such as a telephone company, to a remote network.
Multiple access (MA) Term that describes a situation where many stations can send and receive on the same medium.
TCP-IP model layer 1 Link layer TCP-IP model layer that specifies details of how data is physically sent through the network
Define Authentication server Server type that allows users to log in for access to network resources
802.11 Beacon frame 802.11 frame sent periodically from an access point to announce its presence and provide the SSID
Temporary connections used in situations requiring only sporadic data transfer between DTE devices across the Frame Relay network. What are switched virtual circuits (SVC)
TCP · UDP At which OSI model layer do these functions occur? Name 2 functions that occur in layer 4 (Transport Layer) of the OSI model
personal area network (PAN) computer network used for communication among computer devices (including telephones and personal digital assistants) close to one's person.
IEEE 802.5 - What LAN technology uses this RFC? Token ring protocol - What is the IEEE RCF number?
Endspan PSE The name used for a switch that provides POE
Centralized network model Network model which puts all of the servers in the same physical location.
What is Half duplex ethernet Type of ethernet where both sending and recieving is done over the same pair.  The station can be either sending or recieving (but not both at the same time).
Networking method with...
 
Speed: 10 Mbps
Max Length: 185 Meters
Cable: RG-58 type coax
Connector: BNC
Impedance: 50 ohm
Thin Ethernet , 10 base 2
 
Provide the following
Speed: ?
Max Length: ?
Cable: ?
Connector: ?
Impedance: ?
Radio frequency band a small section of the spectrum of radio communication frequencies, in which channels are usually used or set aside for the same purpose.
point-to-point A communications or network system in which two connected entities pass data only to each other
Convert binary to base 10: 11111000 Convert base 10 to binary: 248
OSI Model layer 4 - give the name OSI Model Transport Layer - give the number
Thin AP Feature limited wireless access point that uplinks to a wireless controller
Convert binary to base 10: 11111110 Convert base 10 to binary: 254
RADSL (Rate Adaptive DSL)
 
What is the key feature of RADSL?
Type of DSL with a speed that adjusts to meet conditions
OSI Model layer 6 - give the name OSI Model Presentation Layer - give the number
BootP Protocol designed for providing startup information (including IP address) to diskless workstations.
data communication equipment (DCE) The side of an interface that represents the provider of a data communication. For example a modem
Carrier sense (CS) The type of technology used when a transmitter listens for a carrier wave before trying to send.
What is IEEE 802.1Q IEEE Ethernet bridging standard that is used for VLANs (aka tagging)
Convert binary to base 10: 11111111 Convert base 10 to binary: 255
Subnet An IP address is divided into two logical parts (network and host).  This term is used to describe all of the computers with the same network address.
Wireless channel A frequency range of a wireless band that is the right size for one WLAN to operate in. The analogy is how one Tv station uses a portion of the television band for its broadcast signal.
Networking method with...
 
Speed: 100 Mbps
Max Length: 100 Meters
Cable: UTP
Connector: RJ-45
Fast Ethernet, 100baseT
 
Provide the following
Speed: ?
Max Length: ?
Cable: ?
Connector: ?
What is PPP used for? Protocol used for dialup 56k modems, ISDN as well as some WAN links
What is the main limitation of circuit switching? Switching technology where:
 
Each call takes a full channel
x.25 One of the oldest packet-switched services available
Symetric DSL traits
aka Single line DSL
 
Provide the following:
Download: ?
Upload: ?
Distance: ?
Type of DSL with
 
Download: 2 Mbps
Upload: 2 Mbps upload
Distance: 3km
Carrier Sense Multiple Access/Collision Detect (CSMA/CD)
 
 
Describe two features of CSMA/CD
Protocol that:

Detects collisions


Backoff/Retry if collisions are detected
Network address translation (NAT) Method used to map one or more internal IP addresses to an external IP address
802.11b stats
 
Provide the following:
Speed, frequency, Indoor range, Outdoor range
Wireless technology with 11MBPS Maximum data rate that operates in the 2.4Ghz band. Max range indoor=150' outdoor=300'
802.3 Preamble 7 bytes of alternating 1 and 0 at the start of an ethernet frame
FDDI stats
 
speed, range (for both types)
Fiber optic LAN technology with a speed of 100 MBPS and a maximum range of 1.2 (single mode) or 18.6 miles (multimode)
SSID (Service set identifier) 32 character friendly name that identifies a particular 802.11 wireless LAN.
This OSI model layer controls the delivery of frames and collision recovery Describe layer 2 (Data link layer) of the OSI model
Bluetooth Wireless protocol for exchanging data over short distances from fixed and mobile devices
Modem Device that converts digital signals to analog for transmission over phone lines
TCP-IP model layer 3 Transport layer
 
Define and name a protocol that works on this layer
TCP-IP model layer that provides communication session management between host computers.
 
TCP, UDP, RTP
DSL
 
Provide the following:
Transmission type: ?
Network: ?
What technology provides:
 
Transmission type: digital
Network: the local telephone network
Name the 9 parts of a tagged ethernet frame Type of frame with...7 byte preamble, 1 byte SOF (start of frame), 6 byte destination MAC address, 6 byte source MAC address, 2 byte length field, 2 byte tag control info, 2 byte MC-Length/TagType, 46-1500 bytes of data, 4 byte CRC (Check sum)
IP · ICMP At which OSI model layer do these functions occur? Name 2 functions occur in layer 3 (Network Layer) of the OSI model
802.11 Data frame 802.11 frames that carry packets from web pages, files, etc. within the body
OSI Model layer 2 - give the name OSI Model Data Link Layer - give the number
Convert binary to base 10: 11000000 Convert base 10 to binary: 192
802.11 Acknowledgement (ACK) frame 802.11 frame - After receiving a data frame, the receiving station will send one of these frames to the sending station if no errors are found. If the sending station doesn't receive one of these frames within a predetermined period of time, the sending station will resend the data frame.
This OSI model layer is where most programs run Describe layer 7 (Application Layer) of the OSI model
Real-time Transport Protocol (RTP) A standardized packet format for delivering audio and video over the Internet
OSI Model layer 5 - give the name OSI Model Session Layer - give the number
The meaning of the abreviation AP Abreviation used for wireless access point
TCP segment
 
Give another name for a TCP segment
TCP Packet
 
Give another name for a TCP packet
Networking method with...
 
Speed: 1000 Mbps
Max Length: 100 Meters
Cable: UTP
Connector: RJ-45
Gigabit Ethernet (over copper), 1000baseT
 
Provide the following
Speed: ?
Max Length: ?
Cable: ?
Connector: ?
Convert binary to base 10: 10000000 Convert base 10 to binary: 128
FTP Common protocol for exchanging files over the Internet
Decentralized network model Network model which puts the servers in more than one physical location. Typically the servers are located near to their clients.
Deauthentication frame Frame type sent to another station if it wishes to terminate secure communications. Used with 802.11
RTP Control Protocol (RTCP) The protocol that manages real time communications
OSI Model layer 7 - give the name OSI Model Application Layer - give the number
PD (Powered device) Device that uses power over ethernet
HDLC and PPP are commonly used for this Name two Wan link protocols (that aren't packet-switched)
How does CSMA/CD reduce collisions? Collision prevention Technology that is used by wired networking that:Detects collisions by observing the traffic on the wire
This OSI model layer that translates data via encryption or compression Describle layer 6 (Presentation Layer) of the OSI model
Ethernet frame Name used for data sent at layer 2 and below. One bit at a time is on the wire.
Frame relay, ATM and MPLS are examples of Name three common packet switched WAN links
The OSI model layer that...
 
uses frames
handles collisions
Description for the osi model Layer 2: Data Link Layer
Jam signal A signal send when CSMA/CD detects a collision
802.11 Control frames Group name for 802.11 frames that assist in the delivery of data frames between stations
DNS An Internet service that runs on a server and translates domain names into IP addresses. For example: It maps "google.com" to the IP address "74.125.67.100"
Subnet mask A value which when compared to an IP address will provide the network and host portions of the address.
Media server Server type that that processes the audio and/or video streams associated with telephone calls
What are EVDO and HSDPA Name two Cellular data networking standards
Name the 7 parts of a standard ethernet frame Type of frame with...7 byte preamble1 byte SOF (start of frame)6 byte destination MAC address6 byte source MAC address2 byte length field46-1500 bytes of data4 byte CRC (Check sum)
Packet switching Refers to protocols in which messages are divided into packets before they are sent. Each packet contains a destination address.
The OSI model layer that...
 
performs network routing functions
uses packets
Description for the osi model Layer 3: Network Layer
IANA The group the assigns public IP addresses
OSI Model layer 1 - give the name OSI Model Physical Layer - give the number
backoff delay Random amount of time that a station waits following a collision before transmitting again
This OSI model layer controls the opening and closing of data streams Describe layer 5 (Session Layer) of the OSI model
TCP-IP model layer 2 Internet layer
 
Define and name a protocol that works on this layer
TCP-IP model layer that packages data into IP datagrams, which contain source and destination address information
 
IP, ICMP, ARP, RARP
IEEE 802.3 IEEE Ethernet standard
Convert binary to base 10: 11100000 Convert base 10 to binary: 224