Flashcards
Chapter 7
Cards in this deck (21)
- 1Switches operate at which layer of the OSI model?data link layer
- 2Routers operate at which layer of the OSI model?Network layer
- 3Gateways operate at which layer of the OSI model?Network Layer
- 4What does a switch do?connects two or more network segments that use the same data link and network protocol
- 5What does a router do?connects two or more network segments that use the same or different data link protocols but the same network protocol
- 6What device can choose the "best" route between networks when there are several possible routes between them?router
- 7Between a router and a switch, which device performs more processing on each message and therefore operate more slowly?router
- 8Between a router and a switch, which device processes only those messages that are specifically addressed to it, and which device processes all messages that appear on the network and forwards them to the appropriate network on the basis of their data link layer address?1. router
2. switch - 9What device attempts to make no changes to the network layer packet and user data receives, but sometimes needs to make changes if the data link layer packet size on one network is different from another?router
- 10What device's data link layer must first recognize that the incoming message is specifically addressed to it at the data link layer before the message is passed to the network layer for processing?router
- 11What device processes the message sent to it and then builds an entirely new data link layer packet to transmit it to the other network?router
- 12Gateways operate at what layer?Network layer
- 13What device is more complex than both switches or routers and why?Gateways because they are the interface between two or more dissimilar networks.
- 14What device connects two or more networks that use the same or different(usually different) data link and network protocols as well as connect same or different types of cable?Gateways
- 15Which device sometimes also operates at the application layer on top of mainly operating at the network layer?Gateways
- 16What device processes only messages explicitly addressed to them and route those messages that need to go to other networks?Gateway
- 17What device's main feature is to translate one network layer protocol into another, translate data link layer protocols, and open sessions between application programs, thus overcoming both hardware and software incompatibilities.Gateway
- 18Gateways used to be common, but what network protocol is taking over?TCP/IP
- 19What are the 3 fundamental architectures that can be combined in different ways for BNs?1. routed backbones (routers that move
packets on the basis of network layer addresses),
2. switched backbones (switches that move packets based on data link layer addresses),
3. virtual LANs (switches that move packets through LANs that are built virtually, not using physical location). - 20The layer closest to the users when designing a BN is called what?access layer, used in the LANs attached to the BN
- 21Which BN layer is the part that connects the LANS together?distribution layer
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- Exam CIS 3347 Flashcards on Chapter 7, created by . . on 29/03/2016.
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