3. Describe the Function of Common Networking Components (such as Switches, Routers, Firewalls, and Load Balancers) 200-901 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   What is the primary function of a firewall in a network?

   • ADistribute traffic across multiple servers to optimize resource use
   • BForward packets between different IP networks based on routing tables
   • CFilter traffic based on security policies to protect network boundaries
   • DForward frames between devices on the same LAN based on MAC addresses
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A company has a web server in a DMZ and internal database servers on a private network. The firewall has a rule that allows HTTPS traffic from the internet to the web server. The web server needs to query the database server on TCP port 1433. What additional firewall rule is required?

   • AAllow inbound traffic from the internet to the database server on port 1433
   • BAllow outbound traffic from the web server to the database server on port 1433
   • CAllow inbound traffic from the database server to the web server on port 443
   • DAllow all traffic between the DMZ and the private network
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   When a switch receives a frame with a destination MAC address that is not yet in its MAC address table, what does the switch do?

   • ADrops the frame because the destination is unknown
   • BSends the frame to the default gateway for routing
   • CFloods the frame out of all ports except the port it arrived on
   • DBroadcasts the frame to all devices on all VLANs
   Reveal Solution Discussion Select an answer first
5. 4application · medium

   A network administrator is configuring a new access switch for a department. The switch will connect to a router for inter-VLAN routing. The administrator wants to ensure that frames within the same VLAN are forwarded only to the appropriate ports, not flooded to all ports unnecessarily. What is the primary mechanism that enables this?

   • AThe switch's MAC address table
   • BThe load balancer's server pool
   • CThe firewall's security policy
   • DThe router's routing table
   Reveal Solution Discussion Select an answer first
6. 5expert · hard

   A network engineer is designing a network for a branch office. The branch office has two internet connections for redundancy. The engineer wants to ensure that if one connection fails, traffic is automatically rerouted to the other. The engineer also wants to enforce security policies on traffic leaving the branch office. Which design should be used?

   • AUse a router with a dynamic routing protocol and a firewall
   • BUse a single router with static routes
   • CUse a switch with VLANs and a load balancer
   • DUse a firewall with a default permit rule
   Reveal Solution Discussion Select an answer first