Networking 1-Exam 2 review Class A: 0 255.0.0.0 * Convert binary 11010011 to decimal = 211.0 Class B: 10 255.255.0.0 * Convert decimal 203 to binary = 11001011 Class C: 110 255.255.255.0 * Determine the network class of IP 182.173.42.34 = B * Find the network/subnet address of 172.145.135.71 using mask 255.255.192.0 135.71 = 1000 0111.0100 0111 (1111 1111.1111 1111.1100 0000.0000.0000) 192.0 = 1100 0000.0000 0000 AND = 1000 0000.0000 0000 Subnet address: 128.0.0.0 Network address: 172.145.0.0
* Find the result of binary 11001011 AND 10011101 10011101 10001001 * If you have network address 184.124.0.0, what would the subnet mask look like if you need 35 subnets? 1111 1111.1111 1111.1111 1100.0000 0000 2n > 37 (6 bits needed). * If the network is 17.0.0.0 and the subnet mask is 255.255.255.0, how many bits were borrowed from host bits, and how many possible subnets are there? How many usable IP addresses are there on one of these subnets? Bits borrowed from host = 16 Possible subnets: 128 Usable IP addresses: 65,535 * Using an IP of 183.48.73.40 and a subnet mask of 255.255.0.0, circle and label the octet numbers in the IP address that are used to describe the network portion and the host portion. Network: 183.48 Host: 73.40 * Convert the IP 175.24.18.16 and subnet mask 255.255.255.224 to binary. IP = 1010 1111.0001 1000.0001 0010.00010000 Subnet mask = 1111 1111 1111 1111 1111 1111 1111 1110 AND the IP to the subnet mask. IP = 1010 1111.0001 1000.0001 0010.0001 0000 Subnet mask = 1111 1111 1111 1111 1111 1111 1111 1110 AND = 1010 1111 0001 1000 0001 0010 0001 0000 * What is the broadcast address for a subnet of 180.120.64.0 255.255.224.0? Broadcast subnet: 180.120.255.255 Broadcast mask: 255.255.255.255 * Circle and label the network/subnet bits. Circle and label the host bits. Color coded above (red and green) * What is the purpose of DNS, DHCP and HTTP? DNS (Domain Name System) purpose: is a hierarchical naming system for computers, services, or any resource participating in the Internet. It associates various information with domain names assigned to such participants. Most importantly, it translates domain names meaningful to humans into the numerical (binary) identifiers associated with networking equipment for the purpose of locating and addressing these devices world-wide. An often used analogy to explain the Domain Name System is that it serves as the "phone book" for the Internet by translating human-friendly computer hostnames into IP addresses. For example, www.example.com translates to 208.77.188.166. DHCP (Dynamic Host Configuration Protocol) purpose: is a standardized networking protocol used on internet protocol (IP) networks for dynamically distributing network configuration parameters, such as IP addresses for interfaces and services. With DHCP computers request IP addresses and networking parameters automatically from a DHCP server, reducing the need for a network administrator or a user from having to configure these settings manually. HTTP (Hyper Text Transfer Protocol) purpose: is the underlying protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted, and what actions web servers and browsers should take in response to various commands. For example, when you enter a URL in your browser, this actually sends an HTTP command to the Web server directing it to fetch and transmit the requested web page. * What is encapsulation? Describe how it works. (E.g. During encapsulation, the TCP segment becomes data for the IP packet. The during client/server communication, the client's TCP layer communicates with the server's TCP layer.) Encapsulation: is a method of designing modular communication protocols in which logically separate functions in the network are abstracted from their underlying structures by inclusion or information hiding within higher level objects.
Enjoy the study guide, and I hope it helps! Jeff Grant Sr.
started by anonymous on 09 Apr 14
Networking 1-Exam 2 review Class A: 0 255.0.0.0
*
Convert binary 11010011 to decimal = 211.0 Class B: 10 255.255.0.0
*
Convert decimal 203 to binary = 11001011 Class C: 110 255.255.255.0
*
Determine the network class of IP 182.173.42.34 = B
*
Find the network/subnet address of 172.145.135.71 using mask 255.255.192.0
135.71 = 1000 0111.0100 0111 (1111 1111.1111 1111.1100 0000.0000.0000)
192.0 = 1100 0000.0000 0000
AND = 1000 0000.0000 0000 Subnet address: 128.0.0.0 Network address: 172.145.0.0
*
Find the result of binary 11001011 AND 10011101
10011101
10001001
*
If you have network address 184.124.0.0, what would the subnet mask look like if you need 35 subnets?
1111 1111.1111 1111.1111 1100.0000 0000 2n > 37 (6 bits needed).
*
If the network is 17.0.0.0 and the subnet mask is 255.255.255.0, how many bits were borrowed from host
bits, and how many possible subnets are there? How many usable IP addresses are there on one of these subnets?
Bits borrowed from host = 16 Possible subnets: 128 Usable IP addresses: 65,535
*
Using an IP of 183.48.73.40 and a subnet mask of 255.255.0.0, circle and label the octet numbers in the IP address
that are used to describe the network portion and the host portion. Network: 183.48 Host: 73.40
*
Convert the IP 175.24.18.16 and subnet mask 255.255.255.224 to binary.
IP = 1010 1111.0001 1000.0001 0010.00010000 Subnet mask = 1111 1111 1111 1111 1111 1111 1111 1110
AND the IP to the subnet mask.
IP = 1010 1111.0001 1000.0001 0010.0001 0000
Subnet mask = 1111 1111 1111 1111 1111 1111 1111 1110
AND = 1010 1111 0001 1000 0001 0010 0001 0000
*
What is the broadcast address for a subnet of 180.120.64.0 255.255.224.0?
Broadcast subnet: 180.120.255.255 Broadcast mask: 255.255.255.255
*
Circle and label the network/subnet bits. Circle and label the host bits.
Color coded above (red and green)
*
What is the purpose of DNS, DHCP and HTTP?
DNS (Domain Name System) purpose: is a hierarchical naming system for computers, services, or any resource participating in the Internet. It associates various information with domain names assigned to such participants. Most importantly, it translates domain names meaningful to humans into the numerical (binary) identifiers associated with networking equipment for the purpose of locating and addressing these devices world-wide. An often used analogy to explain the Domain Name System is that it serves as the "phone book" for the Internet by translating human-friendly computer hostnames into IP addresses. For example, www.example.com translates to 208.77.188.166.
DHCP (Dynamic Host Configuration Protocol) purpose: is a standardized networking protocol used on internet protocol (IP) networks for dynamically distributing network configuration parameters, such as IP addresses for interfaces and services. With DHCP computers request IP addresses and networking parameters automatically from a DHCP server, reducing the need for a network administrator or a user from having to configure these settings manually.
HTTP (Hyper Text Transfer Protocol) purpose: is the underlying protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted, and what actions web servers and browsers should take in response to various commands. For example, when you enter a URL in your browser, this actually sends an HTTP command to the Web server directing it to fetch and transmit the requested web page.
*
What is encapsulation?
Describe how it works. (E.g. During encapsulation, the TCP segment becomes data for the IP packet. The
during client/server communication, the client's TCP layer communicates with the server's TCP layer.)
Encapsulation: is a method of designing modular communication protocols in which logically separate functions in the network are abstracted from their underlying structures by inclusion or information hiding within higher level objects.
Enjoy the study guide, and I hope it helps!
Jeff Grant Sr.