Module 1 Flashcards
What is Packet Tracer?
A program used to simulate creating and testing networks on your computer
What are the 6 steps to obtain and install Cisco Packet Tracer?
1) Log into your Cisco Networking Academy “I’m Learning” page
2) Select Resources
3) Select Download PT
4) Select the version of PT your require
5) Save the file to your computer
6)Launch the PT install program
What are the 3 main menus of PT
1) add devices and connect them
2) select, delete, inspect, label and group components within your network
3) manage your network
What is a Hosts?
All computers connected to a network and participates directly in network communication
What are 2 other names for Hosts?
End Devices and Clients
What is an IP Address
Internet Protocol Address identifies the host and the network to which the host is attached.
What is a server?
Computers w/ software that allow them to provide information
What are 3 common types of software?
Email, web and File
What are the advantages of peer-to-peer networking?
1) Easy to set up
2) Less Complex
3) Lower Cost because network devices and dedicated servers may not be required
4) Can be used for simple tasks such as transforming files and sharing printers
What are the disadvantages of peer-to-peer networking?
1) No centralized admin
2) Not as secure
3) Not Scalable
4) All devices may act as both client and servers which can slow their performance
When initiating communication what address is used to specify where to deliver the message?
The address of the Destination end device
What do intermediary devices do?
Connect the individual end devices to the network
What is a repeater?
Regenerate and retransmit communication signals
True or False? All intermediary devices perform the function of a repeater?
True
What are some functions of intermediary devices
1) regenerate and retransmit com signals
2) maintain info about what pathways exist through the network and internetwork
3) Notify other devices of errors and com failures
4) Direct data along an alternate pathways when there is a link failure
5) Classify and direct messages according to priorities
6) Permit or deny the flow of data, based on security settings
What are the 3 types of media used to interconnect devices on modern networks?
Copper, fiber optic and wireless
What are 3 connection types
Network Interface Card, physical port and interface
Define interface
Specialized ports on a networking device that connect to individual networks.
Define NIC
Network Interface Card connects the end device to the network
Define SOHO
small office and home office allow people to work from home or a remote office connecting to a corporate network , often used by self-employed workers
Define internet
“Network of networks” or a collection of interconnected private and public networks
What is P2P?
Peer-to-peer is when computers function as both server and client on the network
What are the 2 most common type of network infrastructures?
WAN and LAN
Define LAN
A local area network is a network infrastructure that provides access in a small geographic area
Define WAN
A wide area network is a network infrastructure that provides access to other networks over a wide geographical area
To what do LANs provide access?
Internal end devices and intermediary devices
Who typically manages a WAN
Service providers(SP’s) and Internet Service provider (ISP)
What is intranet?
A private connection of WANs and LANs that belong to an organization
What is an extranet?
Secure and safe access to individuals who work for a different r organization but require access to the organizations data
What is cable internet?
Transmits data signal over the same cable as television. It provides high bandwidth, high availability and an always-on connection.
What is DSL?
Digital Subscriber Line is a high bandwidth, high availability and always-on connection over telephone line.
What is ADSL?
Same as DSL except download speed is faster than upload speed
What is cellular?
Uses cellphone network. Performance is limited by the capabilities of the phone and the cell tower it reaches
What is required for satellite connection?
A satellite dish and clear line of site
What is dial-up?
An inexpensive option that uses phone line and a modem. Low bandwidth and not good for large data transfer’s.
What are the 5 connection types?
Cable, DSL , Cellular, Satellite, and dial-up
What are 4 types of business Internet options?
Dedicated Leased Line, Metro Ethernet, Business DSL, Satellite
What is a dedicated leased line?
A reserved circuit that connect geographically separate offices for private voice and/or data
What is SDSL?
Same as DSL but usually for businesses and provides uploads and downloads at same high speeds
What is a converged network?
Carry multiple services (data, telephone and video) on one network
What are 4 basic characteristics that architects must address to meet user expectations?
1) fault tolerance
2) scalability
3) QoS
4) Security
What is a fault tolerant network?
Limits the number of affected devices during failure
What is redundancy?
Having multiple paths to a destination
What’s an important characteristic of scalability?
Additional users and while networks can be connected w/o degrading performance for existing users
What is the focus of QoS?
To prioritize time-sensitive traffic like voice calls
What are 2 types of network security concerns?
Network infrastructure security and information security
What are the 3 requirements in order to achieve the goals of network security?
Confidentiality, Integrity and Availability
Define Data Confidentiality?
Only the intended and authorized recipients can access and read data
Define Data Integrity?
Assures users that the info hasn’t been altered in transmission from origin to destination.
Define Data availability?
Timely and reliable access to data services for authorized users
What are the 4 primary cloud types?
Public clouds, private clouds, hybrid clouds and community clouds
What are the basic security components for a home or small office network?
Antivirus, anti-spyware and firewall filtering
What are the security components of larger and corporate networks?
Dedicated firewall systems, ACL, IPS, VPN
Define Physical Topology
Illustrates the physical location of intermediary devices and cable installation
Define Logical Topology
Illustrates devices, ports and the addressing scheme of the network
Name 3 of the organizations that help maintain structure on the internet(
IETF, ICANN, IAB
Define control plane?
Regarded as the brains and is processed by the CPU. Makes forwarding decisions.
Define Data plane?
Also called the forwarding plane which is the switch fabric connecting the various network ports on a device
