Week 7 Review Questions

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Computer Science

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Dec 6, 2023

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1 Week 7 Review Questions Mason Green Wilmington University SEC 235 Mr. Khumar Singh February 26, 2023

2 Week 7 Review Questions What are the benefits of link aggregation? Answer: Increased reliability and availability. If one of the physical links in the LAG goes down, traffic is dynamically and transparently reassigned to one of the other physical links. It is also cost-effective. What protocol can be used to prevent looping and broadcast storms in your network, and how does it work? Answer: Spanning Tree Protocol or, STP prevents looping and any broadcast storms that come with it. Once configured, STP can automatically disable certain redundant links and determines which links remain enabled. How are switches indirectly involved in Address Resolution Protocol (ARP) poisoning? Answer: Switches are indirectly involved in the attack because they do not verify the MAC address/IP address association. How does the attacker hide their identity when performing media access control (MAC) spoofing? Answer: The attacker's system sends frames with the spoofed MAC address which causes the switch to read the source address contained in the frames and associate the MAC address with the port where the attacker is connected. What is the function of a trunk port? Answer: A trunk port is a type of connection on a switch that is used to connect a guest virtual machine that is VLAN aware. Generally, all frames that flow through this

3 port are VLAN tagged. The exception to this is when a trunk port is granted access to the untagged VLAN set. What is the function of a routing table? Answer: Gives information on a set route to a certain workstation. How does NAT work? Answer: A NAT works by selecting gateways that sit between two local networks: the internal network, and the outside network. What is port forwarding? Answer: Port forwarding allows remote servers and devices on the internet to be able to access devices that are on a private network. What is the difference between NAT and PAT? Answer: In NAT, Private IP addresses are translated into the public IP address. In PAT, Private IP addresses are translated into the public IP address via Port numbers. What can help prevent routing loops in multicast flooding? Answer: To prevent multicast routing flooding, each multicast router subjects incoming multicast traffic to Reverse Path Forwarding verifies the acceptability of each multicast packet's source IP address. If that RPF check fails, the multicast router will drop the packet rather than forward it.

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