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Networking Essentials: Interconnecting the LANs

Feb 11, 2016

📄 Contents

␡

5-1 Introduction
5-2 The Network Bridge
5-3 The Network Switch
5-4 The Router
5-5 Interconnecting LANs with the Router
5-6 Configuring the Network Interface—Auto—Negotiation
Summary
Questions and Problems
Critical Thinking
Certification Questions

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Certification Questions

Which of the following best defines a bridging table?
1. A list of MAC addresses and port locations for hosts connected to the bridge ports
2. A list of IP addresses and port locations for hosts connected to the bridge ports
3. A list of IP addresses and port locations for hosts connected to the hub ports
4. A list of MAC addresses and port locations for hosts connected to the hub ports
Which of the following best defines aging time?
1. The length of time a MAC address remains assigned to a port
2. The length of time an IP address remains assigned to a port
3. The length of time a MAC address remains assigned to a hub
4. The length of time an IP address remains assigned to a hub
Dynamic assignment on a switch implies which of the following? (Select all that apply.)
1. MAC addresses are assigned to a port when a host is connected.
2. IP addresses are assigned to a port when a host is connected.
3. MAC addresses are assigned to a switch when a host is connected.
4. IP addresses are assigned to a switch when a host is connected.
Which of the following terms is used to describe that a MAC address has been manually assigned?
1. Dynamic assignment
2. ARP assignment
3. DHCP assignment
4. Static assignment
What is the purpose of the secure tab on a switch?
1. The switchport will use port discovery to assign a MAC address to the port.
2. The switchport will automatically disable itself if a device with a different MAC address connects to the port.
3. The switchport will use a different MAC address than the one connected to the port.
4. This enables the switch to select what networking devices have a selectable IP address.
What is the length of time an IP address is assigned to a switchport called?
1. Delay time
2. Enable time
3. Aging time
4. Access time
Which of the following is a table of MAC addresses and port mapping used by the switch to identify connected network devices?
1. CAM
2. ARP
3. ARP-A
4. ipconfig /all
Which of the following best defines store-and-forward relative to switch operation?
1. The frame is stored in CAM and the forward to the source for confirmation.
2. The frame is stored in CAM and the forward to the destination for confirmation.
3. The header is received before forwarding it to the destination.
4. The entire frame is received before a decision is made regarding forwarding to its destination.
In which switch mode is the data packet forwarded to the destination as soon as the MAC address has been read?
1. Store-and-forward
2. Adaptive fast-forward
3. Cut-through
4. Fast-forward
Which switch mode offers the minimum switch latency?
1. Cut-through
2. Fast-forward
3. Store-and-forward
4. Adaptive cut-through

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