| 1. | These kinds of functionality must then be provided by higher network layers.
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| 2. | Network layer firewalls generally fall into two sub-categories, stateless.
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| 3. | The network layer service is defined by a Set procedures.
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| 4. | It requires less resources and often accompanies network layer attacks.
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| 5. | PPP permits multiple network layer protocols to operate on the same communication link.
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| 6. | The protocol ( network layer ) address is that of the destination host.
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| 7. | Gateways, also called protocol converters, can operate at any network layer.
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| 8. | Internetworking is implemented in the Network Layer ( Layer 3 ) of the model.
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| 9. | Thus the source quench ICMP message acts as flow control in the network layer.
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| 10. | GRE uses the same mechanism that OSI uses for tunneling at the network layer.
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