Uses Hardware Addresses to Filter the Network.
CCNA Lab Exercises
- CCNA Practice Lab one
- CCNA Exercise Lab two
- CCNA Do Lab 3
- CCNA Exercise Lab four
- CCNA Do Lab v
- CCNA Exercise Lab 6
- CCNA Exercise Lab 7
- CCNA Exercise Lab 8
- CCNA Exercise Lab 9
- CCNA Exercise Lab ten
- CCNA Exercise Lab eleven
- CCNA Exercise Lab 12
Lab 1.1: OSI Questions
Answer the post-obit questions about the OSI model:
1. Which layer chooses and determines the availability of communicating partners, forth with the resources necessary to make the connection; coordinates partnering applications; and forms a consensus on procedures for controlling data integrity and error recovery?
Ans – Session Layer
2. Which layer is responsible for converting information packets from the Information Link layer into electrical signals?
Ans – Concrete Layer
iii. At which layer is routing implemented, enabling connections and path selection between two cease systems?
Ans – Network Layer
4. Which layer defines how data is formatted, presented, encoded, and converted for use on the network?
Ans – Transport Layer
v. Which layer is responsible for creating, managing, and terminating sessions between applications?
Ans – Session Layer
6. Which layer ensures the trustworthy manual of data across a physical link and is primarily concerned with physical addressing, line subject, network topology, error notification, ordered delivery of frames, and flow control?
Ans – Transport Layer
7. Which layer is used for reliable communication betwixt terminate nodes over the network and provides mechanisms for establishing, maintaining, and terminating virtual circuits; transport-fault detection and recovery; and controlling the flow of information?
Ans – Send Layer
8. Which layer provides logical addressing that routers will use for path determination?
Ans – Data Link layer
9. Which layer specifies voltage, wire speed, and pivot-out cables and moves bits between devices?
Ans – Physical Layer
ten. Which layer combines bits into bytes and bytes into frames, uses MAC addressing, and provides fault detection?
Ans – Data-Link Layer
xi. Which layer is responsible for keeping different applications' data split up on the network?
Ans – Presentation Layer
12. Which layer is represented by frames?
Ans – Data Link Layer
13. Which layer is represented by segments?
Ans – Transport Layer
14. Which layer is represented by packets?
Ans – Network layer
fifteen. Which layer is represented past $.25?
Ans – Physical Layer
sixteen. Put the following in society of encapsulation:
- Packets
- Frames
- Bits
- Segments
Answer:
- Segments
- Packets
- Frames
- Bits
17. Put the post-obit in society of de-encapsulation:
- Packets
- Frames
- Bits
- Segments
Answer:
- Bits
- Frames
- Packets
- Segments
Lab ane.ii: Defining the OSI Layers and Devices
Fill in the blanks with the appropriate layer of the OSI or hub, switch, or router device.
| Description | Device or OSI Layer |
|---|---|
| Logical port numbers are used at this layer. | Ans- Application Layer |
| This device sends and receives information nigh the Network layer. | Ans- Router |
| This layer creates a virtual circuit before transmitting between two end stations. | Ans- Session layer |
| This layer uses service access points. | Ans- Physical Layer |
| This device uses hardware addresses to filter a network. | Ans- Switch or Bridge |
| Ethernet is divers at these layers. | Ans- Data Link Layer |
| This layer supports menses control and sequencing. | Ans- Send Layer |
| This device can measure the altitude to a remote network. | Ans- Router |
| Logical addressing is used at this layer. | Ans- Network Layer |
| Hardware addresses are defined at this layer. | Ans- Data Link Layer |
| This device creates one big collision domain and one large broadcast domain. | Ans- Hub |
| This device creates many smaller collision domains, just the network is still one large broadcast domain. | Ans- Switch |
| This device breaks upwardly collision domains and circulate domains. | Ans- Router |
Lab i.3: Identifying Collision and Broadcast Domains
In Figure, place the amount of collision domains and broadcast domains in each network.
Identifying the corporeality of standoff and circulate domains
Standoff domains: Broadcast domains:
- A - 0, 0
- B - 2, 1
- C - iv, i
- D - 2, 4
Review Questions
- Which Cisco layer is responsible for breaking up collision domains?
- Physical
- Access
- Cadre
- Network
- Distribution
- Data Link
- Ans- A
- PDUs at the Network layer of the OSI are called what?
- Core
- Frames
- Packets
- Segments
- Admission
- Distribution
- Transport
- Ans- C
- At which Cisco layer would circulate domains exist defined?
- Core
- Network
- Physical
- Distribution
- Access
- Ship
- Ans- B
- PDUs at the Information Link layer is named what?
- Frames
- Packets
- Datagrams
- Transports
- Segments
- Bits
- Ans- A
- Partitioning of a data stream happens at which layer of the OSI model?
- Concrete
- Data Link
- Network
- Transport
- Distribution
- Access
- Ans- D
- For which of the following would you lot non demand to provide a crossover cablevision?
- Connecting uplinks between switches
- Connecting routers to switches
- Connecting hub to hub
- Connecting hubs to switches
- Ans- Hub to Hub
- What does the Information Link layer utilise to find hosts on a local network?
- Logical network addresses
- Port numbers
- Hardware addresses
- Default gateways
- Ans- C
- How is a crossover cabled?
- The pins ane–8 are completely opposite on the other
- It has the pins 1–8 cabled the same on the other
- Pin one on one side connects to pin three on the other side and pivot 2 connects to pin vi on the other
- Pin ii on 1 side connects to pin three on the other side, and pin 1 connects to pivot 6 on the other
- Ans- C
- Where are routers defined in the OSI model?
- Physical
- Send
- Data Link
- Network
- Ans- D
- At which layer of the OSI are 1s and 0s converted to a digital signal?
- Physical
- Transport
- Data Link
- Network
- Ans- A
- Bridges are defined at what layer of the OSI model?
- Concrete
- Transport
- Data Link
- Network
- Ans- C
- What Cisco layer provides segmentation of contention networks?
- Access
- Physical
- Network
- Distribution
- Core
- Transport
- Information Link
- Ans- F
- What is used at the Transport layer to stop a receiving host'due south buffer from overflowing?
- Segmentation
- Packets
- Acknowledgments
- Flow control
- PDUs
- Ans- A
- Which layer of the OSI provides a translation of data?
- Application
- Presentation
- Session
- Transport
- Data Link
- Ans- A
- Routers can provide which of the following functions? (Choose all that )
- The breakdown of collision domains
- The breakup of circulate domains
- Logical network addressing
- Physical address filtering of the local network
- Ans- B,C,D
- Routers are typically used at which layer of the Cisco three-layer model?
- Access
- Core
- Network
- Data Link
- Distribution
- Ans- C
- How many bits define a hardware accost?
- vi $.25
- xvi bits
- 46 bits
- 48 bits
- Ans- D
- Which of the following is not an advantage of a layer model?
- Dividing the complex network operation into a more manageable layer arroyo
- Allowing changes to occur in one layer without having to change all layers
- Allowing changes to occur in all layers without having to change one layer
- Defining a standard interface for the "plug-and-play" multivendor integration
- Ans- A
- Which three options use twisted-pair copper wiring?
- 100BaseFX
- 100BaseTX
- 100VG-AnyLAN
- 10BaseT
- 100BaseSX
- Ans- B,D,E
- What does the "Base" bespeak in 10BaseT?
- Backbone wiring that uses many digital signals at the same time in one
- Baseband wiring that uses many digital signals at the same time in one
- Backbone wiring that uses only one digital indicate at a fourth dimension in the
- Baseband wiring that uses only 1 digital betoken at a time in the
- Ans- D
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