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Exercise 1

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Course

Computer Network

29 Documents
Students shared 29 documents in this course
Academic year: 2022/2023
Listed bookCcna Routing and Switching Deluxe Study Guide: Exams 100-101 200-101 and 200-120
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Lebanese International University

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  1. What class is the IP address 193.59.107? What is the default subnet mask for this class? Ans: IP address belongs to Class-C Subnet mask- 255. 255.

  2. Taking into account only the structure of the IPv4 packet headers: a. What is the maximum permissible size (in bits) for an IPv4 packet? Ans: 524280 bits b. How many IPv4 addresses can exist? Ans: 2^32(4,294,967,296) addresses can exist.

  3. Suppose that a router uses the following routing table: Subnet Number

SubNet Mask Next Hop

128.96.39 255.255. 28

Interface 0 128.96.39 255.255. 28

Interface 1 128.96.40 255.255. 28

Interface 2 192.4.153 255.255. 92

Interface 3 default - Interface 4

Which interface will the router use for the next hop for each of the following destination addresses: a. 128.96.39 - Interface 1

b. 128.96.40- Interface 2 c. 128.96.39- Interface 1 d. 192.4.153- Interface 3 e. 192.4.153- Interface 3

Tip: Apply each subnet mask and if the corresponding subnet number matches the SubnetNumber column, then use the entry in Next-Hop. 4. How many subnets and hosts per subnet can you get from the network 174.20.0 / 255.255.240? Ans: Subnets- 4096 Host/subnet- 4096

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Exercise 1

Course: Computer Network

29 Documents
Students shared 29 documents in this course

University: Lebanese International University

Was this document helpful?
1. What class is the IP address 193.59.107.145? What is the
default subnet mask for this class?
Ans: IP address belongs to Class-C
Subnet mask- 255.255. 255.0
2. Taking into account only the structure of the IPv4 packet
headers:
a. What is the maximum permissible size (in bits) for an
IPv4 packet?
Ans: 524280 bits
b. How many IPv4 addresses can exist?
Ans: 2^32(4,294,967,296) addresses can exist.
3. Suppose that a router uses the following routing table:
Subnet
Number
SubNet Mask Next Hop
128.96.39.0 255.255.255.1
28
Interface
0
128.96.39.128 255.255.255.1
28
Interface
1
128.96.40.0 255.255.255.1
28
Interface
2
192.4.153.0 255.255.255.1
92
Interface
3
default - Interface
4
Which interface will the router use for the next hop for
each of the following destination addresses:
a. 128.96.39.1 - Interface 1

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