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Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.
Which of the following describe router functions?
Why does the data communication industry use the layered OSI reference model?
The main advantage of a layered model is that it can allow application developers to change aspects of a program in just one layer of the layer model's specifications.
Advantages of using the OSI layered model include, but are not limited to, the following:
It divides the network communication process into smaller and simpler components, thus aiding compo- nent development, design, and troubleshooting;
it allows multiple-vendor development through standardization of network components;
it encourages industry standardization by defining what functions occur at each layer of the model;
it allows various types of network hardware and software to communicate;and it prevents changes in one layer from affecting other layers, so it does not hamper development.
A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
What are the decimal and hexadecimal equivalents for the binary number 10110111?
What is the purpose of flow control?
Which of the following are types of flow control?
What are two purposes for segmentation with a bridge?
Which three statements are true about the operation of a full-duplex Ethernet network?
How does a host on an Ethernet LAN know when to transmit after a collision has occurred?
Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?
Which of the following types of connections can use full duplex?
Which fields are contained within an IEEE Ethernet frame header?
What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
How to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Segmentation of a data stream happens at which layer of the OSI model?
When data is encapsulated, which is the correct order?
What type of RJ45 UTP cable is used between switches?
Which of the following are unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?