Network Engineering at Hochschule Osnabrück | Flashcards & Summaries

Lernmaterialien für Network Engineering an der Hochschule Osnabrück

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How much data can be encapsulated into a normal sized Ethernet frame before it is sent over the network?

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46 to 1500 bytes


 The size of Ethernet frames is normally limited to a maximum of 1518 bytes and a minimum of 64 bytes.

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When a host sends a packet, how does it determine if the destination of the packet is on the same local network or on a remote network?

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It uses the subnet mask to compare the source and destination IP address.

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A customer calls the help line to report a computer problem. The help line technician responds and works with the customer for some time. However, the technician cannot identify the root cause of the problem. What should the technician do to help the customer?

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Tell the customer that a ticket is created and another technician will contact the user soon.

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A user opens multiple windows on the desktop with several tasks including web surfing, emailing, and Skype calling. What is used by the TCP/IP protocol stack to track the specific sessions for each application?

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port number

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Which Layer of TCP/IP?

determines the best path to forward data trough the network

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Internet

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Which Layer of TCP/IP?

represents data to the User, data encoding and dialog control

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Application

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A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at an ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed?

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traceroute

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How does an activity LED on wireless routers indicate that traffic is moving through a port?

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by flashing

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A user calls the help desk to report a workstation problem. Which three questions would produce the most helpful information for troubleshooting? (Choose three.)

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If you received an error message, what was it?, What changes have you made to your workstation?, What operating system version is running on your workstation?

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Which wireless technology is used on smart phones to transmit data to another device within only very close proximity?

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  • NFC
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Which command would a technician use to display network connections on a host computer?

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netstat

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A customer called the cable company to report that the Internet connection is unstable. After trying several configuration changes, the technician decided to send the customer a new cable modem to try. What troubleshooting technique does this represent?

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substitution

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Q:

How much data can be encapsulated into a normal sized Ethernet frame before it is sent over the network?

A:

46 to 1500 bytes


 The size of Ethernet frames is normally limited to a maximum of 1518 bytes and a minimum of 64 bytes.

Q:

When a host sends a packet, how does it determine if the destination of the packet is on the same local network or on a remote network?

A:

It uses the subnet mask to compare the source and destination IP address.

Q:

A customer calls the help line to report a computer problem. The help line technician responds and works with the customer for some time. However, the technician cannot identify the root cause of the problem. What should the technician do to help the customer?

A:

Tell the customer that a ticket is created and another technician will contact the user soon.

Q:

A user opens multiple windows on the desktop with several tasks including web surfing, emailing, and Skype calling. What is used by the TCP/IP protocol stack to track the specific sessions for each application?

A:

port number

Q:

Which Layer of TCP/IP?

determines the best path to forward data trough the network

A:

Internet

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Q:

Which Layer of TCP/IP?

represents data to the User, data encoding and dialog control

A:

Application

Q:

A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at an ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed?

A:

traceroute

Q:

How does an activity LED on wireless routers indicate that traffic is moving through a port?

A:

by flashing

Q:

A user calls the help desk to report a workstation problem. Which three questions would produce the most helpful information for troubleshooting? (Choose three.)

A:

If you received an error message, what was it?, What changes have you made to your workstation?, What operating system version is running on your workstation?

Q:

Which wireless technology is used on smart phones to transmit data to another device within only very close proximity?

A:
  • NFC
Q:

Which command would a technician use to display network connections on a host computer?

A:

netstat

Q:

A customer called the cable company to report that the Internet connection is unstable. After trying several configuration changes, the technician decided to send the customer a new cable modem to try. What troubleshooting technique does this represent?

A:

substitution

Network Engineering

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