1. What is characteristic of the operation of a Layer 2 switch?
• forwards data based on logical addressing
• duplicates the electrical signal of each frame to every port
• learns the port assigned to a host by examining the destination MAC address
• uses the destination MAC address to determine the specific interface to forward a frame
2. Two newly hired technicians are discussing the implementation of a new LAN. One technician proposes installing a hub. The other technician advises installing a switch. Which statements are true about the differences between a hub and a switch? (Choose two.)
• A hub operates at Layer 2 of the OSI model.
• A hub reduces the number of collisions on a LAN.
• A hub works at a higher OSI model layer than a switch.
• A switch provides more throughput to hosts on a LAN
• A switch provides a collision-free environment on a LAN.
• The number of collisions on a LAN are the same whether a hub or a switch is used.
3. 
Refer to the exhibit. Forty-eight workstations are connected to a hub. The users are able to connect to the network, but access is very slow. An entry-level technician replaces the 10 Mbps hub with 100 Mbps hub but the problem still exists. What is the most economical way to correct the problem?
• Replace the hub with a switch.
• Replace the hub with a router.
• Replace the hub with a 1 Gbps hub.
• Replace the hub with a 10 Mbps fiber hub.
4. 
Exhibited is a portion of ABC Company internetwork. Which of the connections can be full duplex?
• segments 1 and 2
• segment 2
• segments 3 and 4
• segments 2, 3, and 4
• segments 1, 2, 3, and 4
5. 
Refer to the exhibit. The switch and the hub have default configurations, and the switch has built its CAM table. Which of the hosts will receive the data when workstation A sends a unicast packet to workstation C?
• workstation C
• workstations B and C
• workstations B, C, and the E0 interface of the router
• workstations B, C, D, E, F, and the E0 interface of the router
6. An administrator would like to connect ten workstations on a 192.168.0.0/24 network. The device selected by the administrator must allow connectivity between hosts without sharing bandwidth. Which device would be appropriate?
• hub
• router
• switch
• repeater
7. Which networking devices use the MAC address to make forwarding decisions? (Choose two.)
• NIC
• bridge
• hub
• switch
• repeater
8. Which devices are primarily used to extend cable segments within a collision domain by regenerating the data signals? (Choose two.)
switch
• repeater
• router
• bridge
• hub
9. Which devices will create multiple collision domains in an Ethernet network? (Choose two.)
• NIC
• hub
• switch
• router
repeater
10. 
Refer to the exhibit. How many broadcast domains exist in classroom 240?
• 1
• 2
• 5
• 12
• 13
• 15
11. A PC receives a frame. Which situation will cause the NIC on the receiving host to pass the frame contents up the OSI layers to be processed by the PC?
• The frame is a runt frame.
• The destination MAC address of the frame is FFFF.FFFF.FFFF.
• The transmitting host generated a jam signal during the frame transmission.
• The recalculated checksum for the frame does not match the FCS on the frame.
12. A network administrator has a multi-floor LAN to monitor and maintain. Through careful monitoring, the administrator has noticed a large amount of broadcast traffic slowing the network. Which device would you use to best solve this problem?
• bridge
• hub
• router
• transceiver
13. What will a bridge do if it receives a frame with a MAC address that is not within the table?
• discard frame
• ignore frame
• send frame to appropriate port
• send frame to all ports except source port
14. Which networking device reduces the size of both collision domains and broadcast domains?
• hub
• Layer 2 switch
• router
• bridge
• repeater
15. What is used to prevent Layer 2 switching loops?
• bridging
• segmentation
• Address Resolution Protocol
• Spanning-Tree Protocol
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