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CCNA Routing and Switching Complete Study Guide. Todd Lammle
Читать онлайн.Название CCNA Routing and Switching Complete Study Guide
Год выпуска 0
isbn 9781119288299
Автор произведения Todd Lammle
Жанр Зарубежная образовательная литература
Издательство John Wiley & Sons Limited
8. Which layer provides logical addressing that routers will use for path determination?
9. Which layer specifies voltage, wire speed, and cable pinouts and moves bits between devices?
10. Which layer combines bits into bytes and bytes into frames, uses MAC addressing, and provides error detection?
11. Which layer is responsible for keeping the data from different applications separate on the network?
12. Which layer is represented by frames?
13. Which layer is represented by segments?
14. Which layer is represented by packets?
15. Which layer is represented by bits?
16. Rearrange the following in order of encapsulation:
Packets
Frames
Bits
Segments
17. Which layer segments and reassembles data into a data stream?
18. Which layer provides the physical transmission of the data and handles error notification, network topology, and flow control?
19. Which layer manages logical device addressing, tracks the location of devices on the internetwork, and determines the best way to move data?
20. What is the bit length and expression form of a MAC address?
Written Lab 1.2: Defining the OSI Layers and Devices
Fill in the blanks with the appropriate layer of the OSI or hub, switch, or router device.
Written Lab 1.3: Identifying Collision and Broadcast Domains
1. In the following exhibit, identify the number of collision domains and broadcast domains in each specified device. Each device is represented by a letter:
A. Hub
B. Bridge
C. Switch
D. Router
Review Questions
You can find the answers to these questions in Appendix B, “Answers to Review Questions.”
1. Which of the following statements is/are true with regard to the device shown here? (Choose all that apply.)
A. It includes one collision domain and one broadcast domain.
B. It includes 10 collision domains and 10 broadcast domains.
C. It includes 10 collision domains and one broadcast domain.
D. It includes one collision domain and 10 broadcast domains.
2. With respect to the OSI model, which one of the following is the correct statement about PDUs?
A. A segment contains IP addresses.
B. A packet contains IP addresses.
C. A segment contains MAC addresses.
D. A packet contains MAC addresses.
3. You are the Cisco administrator for your company. A new branch office is opening and you are selecting the necessary hardware to support the network. There will be two groups of computers, each organized by department. The Sales group computers will be assigned IP addresses ranging from 192.168.1.2 to 192.168.1.50. The Accounting group will be assigned IP addresses ranging from 10.0.0.2 to 10.0.0.50. What type of device should you select to connect the two groups of computers so that data communication can occur?
A. Hub
B. Switch
C. Router
D. Bridge
4. The most effective way to mitigate congestion on a LAN would be to ________.
A. Upgrade the network cards
B. Change the cabling to CAT 6
C. Replace the hubs with switches
D. Upgrade the CPUs in the routers
5. In the following work area, draw a line from the OSI model layer to its PDU.
6. What is a function of the WLAN Controller?
A. To monitor and control the incoming and outgoing network traffic
B. To automatically handle the configuration of wireless access points
C. To allow wireless devices to connect to a wired network
D. To connect networks and intelligently choose the best paths between networks
7. You need to provide network connectivity to 150 client computers that will reside in the same subnetwork, and each client computer must be allocated dedicated bandwidth. Which device should you use to accomplish the task?
A. Hub
B. Switch
C. Router
D. Bridge
8. In the following work area, draw a line from the OSI model layer definition on the left to its description on the right.
9. What is the function of a firewall?
A. To automatically handle the configuration of wireless access points
B. To allow wireless devices to connect to a wired network
C. To monitor and control the incoming and outgoing network traffic
D. To connect networks and intelligently choose the best paths between networks
10. Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see whether enough resources exist for that communication?
A. Transport
B. Network
C. Presentation
D. Application
11. Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two.)
A. The Transport layer divides a data stream into segments and may add reliability and flow control information.
B. The Data Link layer adds physical source and destination addresses and an FCS to the segment.
C. Packets are created when the Network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
D. Packets are created when the Network layer adds layer 3 addresses and control information to a segment.
E. The Presentation layer translates bits into voltages for transmission across the physical link.
12. Which of the following layers of the OSI model was later subdivided into two layers?
A. Presentation
B. Transport
C. Data Link
D. Physical
13. What is a function of an access point (AP)?
A. To monitor and control the incoming and outgoing network traffic
B.