Shared Flashcard Set

Details

Network + Section 4
Modules 4.1 - 4.7
76
Computer Networking
Professional
04/20/2011

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Cards

Term
What does OSI stand for?
Definition
Open System Interconnection
Term
What is OSI Layer 1?
Definition
Physical
Term
What is OSI Layer 2?
Definition
Data Link
Term
What is OSI Layer 3?
Definition
Network
Term
What is OSI Layer 4?
Definition
Transport
Term
What is OSI Layer 5?
Definition
Session
Term
What is OSI Layer 6?
Definition
Presentation
Term
What is OSI Layer 7?
Definition
Application
Term
Which OSI Layer deals with the parts of the network you can touch such as cabling?
Definition
Physical Layer/OSI Layer 1
Term
What OSI Layer deals with MAC Addresses and Switches?
Definition
Data Link Layer/ OSI Layer 2
Term
What OSI Layer deals with routing and the IP Protocol?
Definition
Network Layer/OSI Layer 3
Term
What OSI Layer deals with TCP and UDP, and is known as the post office layer?
Definition
Transport Layer/OSI Layer 4
Term
What OSI Layer deals with communication management between devices, including half-duplex and full-duplex?
Definition
Session Layer/OSI Layer 5
Term
What OSI Layer links the Presentation Layer and Transport Layer?
Definition
Session Layer/OSI Layer 5
Term
What OSI Layer is responsible for character encoding and application encryption?
Definition
Presentation Layer/OSI Layer 6
Term
What OSI Layer is associated with HTTP(S), FTP, DNS, and POP3?
Definition
Application Layer/OSI Layer 7
Term
Which OSI Layer is the layer the user interacts with?
Definition
Application Layer/OSI Layer 7
Term
Which type of documentation details the wiring path between devices?
Definition
Wiring Schematics
Term
What type of documentation follows the physical wiring and devices on a network?
Definition
Physical Network Diagrams
Term
What type of documentation gives you a high level views of network infrastructure?
Definition
Logical Network Diagrams
Term
What type of documentation provides a point of reference in time?
Definition
Baselines
Term
Which type of documentation deals with infrastructure, security, network, etc. and is often created/approved by committee?
Definition
Policies, Procedures, and Configuration
Term
What type of documentation is posted in a common area, and are sometimes regularly audited, depending on the industry?
Definition
Regulations
Term
What protocol does ping use?
Definition
ICMP
Term
What does ICMP stand for?
Definition
Internet Control Message Protocol
Term
What do we use to trace the route of packets through the network?
Definition
TRACERT
Term
What do we do to test how well network components handle loads over time?
Definition
Load Testing
Term
What is a standard format for sharing log info?
Definition
SYSLOG
Term
What is spylog?
Definition
A standard protocol for forwarding log messages
Term
What is often the number one priority for network infrastructure?
Definition
Uptime
Term
What does a slow network do to applications?
Definition
Degrades Functionality
Term
What are major concerns for video applications?
Definition
Latency, Bandwidth
Term
What is the gold standard for High Availability Uptime?
Definition
5 nines (99.999%)
Term
What is designed to maintain uptime in the case of a failure?
Definition
Fault Tolerance
Term
What allows you to prioritize traffic by application type?
Definition
Traffic Shaping/QoS
Term
What can you use to avoid redundant network traffic?
Definition
Caching Engines
Term
What type of web pages are never cached?
Definition
Dynamic
Term
What is the critical first step of network troubleshooting?
Definition
Information Gathering
Term
What is a very important piece of information that should be gathered when asking questions to troubleshoot a network?
Definition
Determining the last major change
Term
After gathering information, what should you do next?
Definition
Identify Affected Areas of the Network
Term
What are some uptime tests?
Definition
ping, tracert
Term
What is a common way to identify changes made to a network, especially during non business hours?
Definition
Automated monitoring tools
Term
After Identifying the affected areas of the network, what should be done next when troubleshooting a network?
Definition
Determine if anything has changed
Term
After determining if anything has changed, what is the next logical step in troubleshooting a network?
Definition
Establish most probable cause
Term
Which step of the networking troubleshooting methodologies would involve brainstorming sessions and lists?
Definition
Establishing most probable cause
Term
After establishing most probable cause, what is the next logical step in troubleshooting a network?
Definition
Determine if escalation is necessary
Term
After determining if escalation is necessary and possibly escalating the problem, what is the next logical step in troubleshooting a network?
Definition
Create an action plan and solution
Term
What should always be included in your plan when troubleshooting a network?
Definition
A Contingency plan
Term
After creating a plan of action, what is the next logical step in troubleshooting the network?
Definition
Implement and test the solution
Term
When implementing a solution, what is the most important thing you should do?
Definition
Only change one thing at a time
Term
After Implementing and testing your solution, what is the next logical step in troubleshooting a network?
Definition
Identify the results and effects
Term
What is the last step in troubleshooting a network?
Definition
Documenting the solution and process
Term
What is the most important thing to document after solving a network problem?
Definition
The root cause of the problem
Term
What do we call it when energy from a signal crosses from one pair to another?
Definition
Crosstalk
Term
How is crosstalk measured?
Definition
In dB
Term
In terms of crosstalk what do higher dB readings mean?
Definition
Less Crosstalk
Term
What is attenuation?
Definition
Signal Loss
Term
If you have a collision what type of ethernet communication are you using?
Definition
Half Duplex
Term
What do we call it when two wires are crossed or pinched together?
Definition
Short
Term
What do we call a physical break in a wire?
Definition
Open
Term
What type of physical connectivity issue manifests itself as echo?
Definition
Impedence Mismatch
Term
What do we call external influences on a signal?
Definition
Interference
Term
How do we ensure all port speeds match on our network when the auto negotiating capability is not functioning properly?
Definition
Hard coding
Term
What happens in the case of a port duplex mismatch?
Definition
Slow performance
Term
What happens in the case of an Incorrect VLAN?
Definition
Loss of Connectivity
Term
How can you ensure that your IP address and subnet mask are configured correctly?
Definition
Ping
Term
How do you troubleshoot your default gateway?
Definition
Ping both inside and outside your subnet
Term
How do you confirm functionality of your DNS server?
Definition
NSLookup
Term
How do you confirm a routing loop?
Definition
Tracert
Term
Why are switching loops worse than routing loops?
Definition
Routing loops have TTL, so the loop will not go on forever, a switching loop will
Term
What happens in the case of route problems?
Definition
Lack of connectivity and dropped packets
Term
What does the WPA protocol use?
Definition
TKIP
Term
What does WPA2 use?
Definition
AES
Term
What does AES stand for?
Definition
Advanced Encryption Standard
Term
What does WPA2 Personal mode use for authentication?
Definition
Pre-shared keys
Term
What kind of authentication does WPA2 enterprise mode use?
Definition
802.1x (External Authentication)
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