Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/84

Click to flip

84 Cards in this Set

  • Front
  • Back
___ are designed to operate over large, geographically seperated areas.
WAN'S
Type of data at level 4 Transport?
Segment
Type of data at level 3 Network?
Packet of Datagram
Type of data at level 2 Data Link?
Frame
Type of Data at level 1 Physical?
Bit
OSI level 7?
7 - Application
OSI Level 6?
6 - Presentation
OSI level 5?
Session
Which layer handles physical addressing,network topology, network access and flow control?
2 - Data link
____ wraps data with the necessary protocol information before network transit.
Encapsulation
At what level is the network address added?
3 - Network
At what level is the local address added?
Data link
What does PSTN stand for?
Public Switched Telephone Network
What is DMA?
Direct Memory Address
What does MAC stand for?
Media Access Control
How long is a MAC address?
48 bits or 6 octets
In boolean logic NOT
Input = 0 output = _
1
In boolean logic NOT
Input = 1 output = _
0
In boolean logic AND
Input = 0,1
Output = _
0
In boolean logic AND
Input = 1,1
Output = _
1
In boolean logic AND
Input = 1,0
Output = _
0
In boolean logic AND
Input = 0,0
Output = _
0
In boolean logic OR
Input = 0,1
Output = _
1
In boolean logic AND
Input = 1,1
Output = _
1
In boolean logic AND
Input = 1,0
Output = _
0
In boolean logic AND
Input = 0,0
Output = _
0
What is ISDN?
Integrated Services Digital Network
Some common WAN technologies?
Modems
Integrated Services Digital Network (ISDN)
Digital subscriber line (DSL)
Frame Relay
T1, E1, T3, and E3
Synchronous Optical Network (SONET)
What is DSL?
Digital subscriber line (DSL)
kbps how many bits per second?
1,000
Mbps how many bits per second?
1,000,000
Gbps how many bits per second?
1,000,000,000
Tbps how many bits per second?
1,000,000,000,000
____ Layer provides:-
Reliable transfer of data across media.
Physical addressing, network topology, line discipline, error notification, ordered delivery of frames, and flow control
2 - Data Link
____ Layer provides:-
Binary Transmission
1 - Physical
____ Layer provides:-
Network Addressing and Best path determination
3 - Network
____ Layer provides:-
End to end connections
4 - Transport
____ Layer provides:-
Interhost Communication
5 - Session
____ Layer provides:-
Data representation
6 - Presentaton
____ Layer provides:-
Network access to applications
7 - Application
What is Attenuation?
The decrease in signal amplitude over the length of a link
What is impedance?
Measurement of the resistance of the cable to alternating current, measured in ohms
What is insertion loss?
The combination of the effects of signal attenuation and impedance discontinuities.
What is TIA/EIA-568-B?
Cable testing standard for high speed Ethernet LANs
What does TIA/EIA-568-B measure?
Wire map
Insertion loss
Near-end crosstalk (NEXT)
Power sum near-end crosstalk (PSNEXT)
Equal-level far-end crostalk (ELFEXT)
Power sum equal-level far end crosstalk (PSELFEXT)
Return loss
Propagation delay
Cable length
Delay skew
In which situation is 10Mbps Ethernet typically used?
End user and user level switch
In which situation is 100Mbps Ethernet typically used?
Workgroup and for servers
In which situation is 1000Mbps Ethernet typically used?
High speed backbone
Type of cable?
Switch to router
Straight
Type of cable?
Switch to PC or Server
Straight
Type of cable?
Hub to PC or Server
Straight
Type of cable?
Switch to Switch
Crossover
Type of cable?
Switch to Hub
Crossover
Type of cable?
Hub to Hub
Crossover
Type of cable?
Router to Router
Crossover
Type of cable?
PC to PC
Crossover
Type of cable?
Router to PC
Crossover
What is DTE?
Data Terminal Equipment
End of the users device on the WAN link
Typically the router
What is DCE?
Data Communications Equipment
End of the WAN providers side of the cmmunication facility
Responsible for clocking
What is CSU/DSU?
Channel service unit/data service unit
Performs signal clocking
IEEE name for fast Ethernet?
802.3u
IEEE name for 100BASE-T Ethernet?
802.3i
IEEE name for 1000BASE-T Ethernet?
802.3x
What is LLC?
Logical Link Control
Handles error control, flow control, framing.
Ethernet resides at which level(s) os the OSI model?
1 - Physical
2 - Data Link
Parameters for 10-Mbps Ethernet?
Bit time - 100nsec
Slot time - 512 bit-times
Interframe timing - 96 bits
Collision attempt limit - 16
Collision backoff limit - 10
Collision jam size - 32 bits
Maximum untagged frame size - 1518 Octects
Minimum frame size - 512 bits
Switch modes?
Store and forward
Cut-through switching
Fragment free switching
Layer 2 bridging, MAC address unknown, what happens?
Broadcast to all devices except the one on which it was recieved.
Layer 2 devices?
Bridge and Switch
Segment the network
TCP/IP model layers?
Application
Transport
Internet
Network Access
TCP/IP model Network Access layer Protocols?
Ethernet
Fast Ethernet
SLIP and PPP
FDDI
ATM, Frame Relay and SMDS
ARP
Proxy ARP
RARP
WHAT IS DHCP?
Dynamic Host Configuration Protocol
What is ARP?
Address Resolution Protocol
When sending an ARP request, what MAC address does the source use?
FF-FF-FF-FF-FF-FF, the broadcast address.
What is UDP?
User Datagram Protocol
Which application layer protocols use UDP?
Trivial File Transfer Protocol (TFTP)
Simple Network Management Protocol (SNMP)
Dynamic Host Configuration Protocol (DHCP)
Domain Name System (DNS)
What is TFTP?
Trivial File Transfer Protocol
It uses UDP
Port number 69
What is SNMP?
Simple Network Management Protocol
It uses UDP
Port number 161
What is DNS?
Domain Name System
It uses UDP
Port number 53
What is HTTP?
Hypertext Transfer Protocol
What does "http://" do?
Identifies to the browser what protocol should be used
What is SMTP?
Simple Mail Transfer Protocol
It uses TCP
Port number 25
What is POP3?
Post Office Protocol Version 3
It uses TCP
Port number 110
What is IMAP4?
Internet Messaging Access Protocol Version 4
It uses TCP