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agned by our ISP to s network. Hence, we are forced to borrow bits to create the subnet ID from the existing host ID field. Now do a quick exercise, check whether 191.254.0.32 is a valid IP host address given the network ID of 191.254.0.0 while using 11 bits for subnetting?

agned by our ISP to s network. Hence, we are forced to borrow bits to create the subnet ID from the existing host ID field. Now do a quick exercise, check whether 191.254.0.32 is a valid IP host address given the network ID of 191.254.0.0 while using 11 bits for subnetting?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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NW Q8) IP addressing operates at the network layer (Layer 3) of OSI, IP addresses must be able to identify individual hosts (such as a computer, printer, router, etc.) and individual networks. An IP address already accommodates a network ID and a host ID, so all that is required is some way to create the subnet ID field. Since we can't expand the size of the IP address (32 bits for IPV4), we must borrow some bits from the existing address to use for the subnet ID. We can't borrow bits from the network ID part of the IP address because this has been pre-assigned by our ISP to uniquely identify our organization's network. Hence, we are forced to borrow bits to create the subnet ID from the existing host ID field. Now do a quick exercise, check whether 191.254.0.32 is a valid IP host address given the network ID of 191.254.0.0 while using 11 bits for subnetting?
Transcribed Image Text:NW Q8) IP addressing operates at the network layer (Layer 3) of OSI, IP addresses must be able to identify individual hosts (such as a computer, printer, router, etc.) and individual networks. An IP address already accommodates a network ID and a host ID, so all that is required is some way to create the subnet ID field. Since we can't expand the size of the IP address (32 bits for IPV4), we must borrow some bits from the existing address to use for the subnet ID. We can't borrow bits from the network ID part of the IP address because this has been pre-assigned by our ISP to uniquely identify our organization's network. Hence, we are forced to borrow bits to create the subnet ID from the existing host ID field. Now do a quick exercise, check whether 191.254.0.32 is a valid IP host address given the network ID of 191.254.0.0 while using 11 bits for subnetting?
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