CCNA 1 v6.0 Chapter 6: Network Layer: Check your Understanding Answers
1. Which layer of the OSI model is concerned with end-to-end communication over the network?
- Network
- Transport
- Data link
- Application
2. Which of the following is associated with the network layer?
- IP address
- Frames
- MAC address
- Physical addressing
3. Why was IPv4 designed as a connectionless protocol?
4. On a router, what field in an IPv4 header should be examined to determine that the maximum number of hops have been reached by the packet on its way from the source to this destination?
- Version
- DS
- TTL
- Protocol
- Source IP address
- Destination IP address
5. When configuring a host, the gateway was not configured. How will this affect communication to and from this device?
- Host communication will not be affected.
- The host will not be able to communicate with devices by name.
- Communication will be limited to hosts in the local network.
- No communication will be successful to or from the host.
6. In what part of a router is the current configuration being used located?
- ROM
- NVRAM
- Flash
- RAM
7. During the boot process of a Cisco router, you notice a series of hash symbols (#) appearing on the terminal emulator screen from the console session. In what phase is the boot process?
- Loading the startup configuration
- Loading the IOS
- POST
- Loading the bootstrap
8. What are the required steps for configuring an interface on a router? (Choose two.)
- Provide Layer 3 addressing information
- Add a description to the interface
- Turn on routing on the interface
- Activate the interface
9. The ip default-gateway command was not used when configuring a switch. How will this affect network communication? (Choose two.)
- Host communication through the switch will not be affected.
- The hosts communicating through the switch will not be able to communicate with devices by name.
- The host communication through the switch will be limited to hosts in the local network.
- No communication through the switch will be successful.
- Communication to and from the switch will be limited to hosts in the local network.
10. When using the netstat -r command on a host, you see a route 0.0.0.0 0.0.0.0.0. What does this route represent?
- The host has no routes available for forwarding packets.
- This is a route for testing local communication.
- Destinations without a specified route are forwarded to the gateway.
- The host does not have an IP address configured.