The two discovery modes are passive and active. When operating in passive mode, an AP will generate more traffic as it continually broadcasts beacon frames to potential clients. In active mode, the client initiates the discovery process instead of the AP. Mixed mode refers to network mode settings, and open mode refers to security parameter settings.
2. Which parameter is commonly used to identify a wireless network name when a home wireless
AP is being configured?
An Ethernet switch examines the source MAC address of an incoming frame. If the source MAC address is not in the MAC address table, the switch will add it to the table with the associated ingress Ethernet port.
5. Which OSI layer header is rewritten with new addressing information by a router when
forwarding between LAN segments?
When a router forwards traffic between LAN segments it encapsulates the Layer 2 frame to determine the Layer 3 path. Once the Layer 3 path is determined, the router encapsulates the Layer 3 packet in a new Layer 2 frame with new Layer 2 addressing infomation for the destination LAN segment.
6. At what layer of the OSI model do routers operate?
Processes running on the intermediary network devices perform functions like regenerating and re-transmitting data signals, maintaining information about what pathways exist through the network and internetwork, directing data along alternate pathways when there is a link failure, and permitting or denying the flow of data, based on security settings.
9. What information does an Ethernet switch examine and use to forward a frame?
A wireless LAN controller (WLC) can be configured to manage multiple lightweight access points (LWAPs). On the WLC, a network administrator can configure SSIDs, security, IP addressing, and other wireless network parameters in a centralized managementenvironment.
11. Which two roles are typically performed by a wireless router that is used in a home or small
business? (Choose two.)
In addition to its roles as router, a typical SOHO wireless router acts as both a wireless access point and an Ethernet switch. RADIUS authentication is provided by an external server. A WLAN controller is used in enterprise deployments to manage groups of lightweight access points. A repeater is a device that enhances an incoming signal and retransmits it.
12. What technology is used to prevent Layer 2 loops?
Each VLAN requires its own network number, broadcast address, and valid IP addresses because each VLAN is a separate network. IP addressing schemes are frequently designed with the VLAN numbers as part of the design.