CCNA1-Module 8

1 What is the function 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
• determines which interface is used to forward a frame based on the destination MAC address*

2 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

3 Which networking device reduces the size of both collision domains and broadcast domains?
hub

• Layer 2 switch
• Router*
• bridge
• Repeater

4 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*

5 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.

6 What is used to prevent Layer 2 switching loops?

• bridging
• segmentation
• Address Resolution Protocol
• Spanning-Tree Protocol*

7 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.

8 Which networking devices use the MAC address to make forwarding decisions? (Choose two.)

• NIC
• Bridge*
• hub
• Switch*
• repeater

9 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

10 Which devices will create multiple collision domains in an Ethernet network? (Choose two.)

• NIC
• hub
• Switch*
• Router*
• repeater

11 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*

12 Refer to the exhibit. How many broadcast domains exist in classroom 240?

1. 1*
2. 2
3. 5
4. 12
5. 13
6. 15

13 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

14 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

15 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.