Computer Science - Networking - Discussion
Discussion Forum : Networking - Section 2 (Q.No. 41)
41.
With an IP address set starting with 150, you currently have six offices that you are treating as subnets. Plans are in place to open 10 more offices before the end of the year. What subnet mask should you use to satisfy the needed number of subnets and maximize the number of hosts available at each site?
Discussion:
18 comments Page 1 of 2.
Patty said:
3 years ago
6 + 10 = 16 subnets.
Then 2^n>=x, where n=borrowed bits and x is the number of subnets.
What exponent to 2 and get 16.
2^4>=16, then the borrowed bits from host portion is 4, then in standard subnetting table 4 bits match to 240,
Then the answer is 240, not 248.
Then 2^n>=x, where n=borrowed bits and x is the number of subnets.
What exponent to 2 and get 16.
2^4>=16, then the borrowed bits from host portion is 4, then in standard subnetting table 4 bits match to 240,
Then the answer is 240, not 248.
(2)
Rashmi vyas said:
8 years ago
Here, We need 16 subnets which can be represented as 2^4 so 4 bits are needed for subnet. Remaining bits can be used for hosts.
So, 11110000 = 128 + 64 + 32 + 16 = 240. Hence 240 should be the answer.
So, 11110000 = 128 + 64 + 32 + 16 = 240. Hence 240 should be the answer.
(1)
Eybikey said:
1 decade ago
(10+6)=16 ; subnets need.
(16+2)=18 ; 2 from subnet id and broadcast address
2^5 =32 ; 5 bits for subnets. so the answer is 11111000.
(16+2)=18 ; 2 from subnet id and broadcast address
2^5 =32 ; 5 bits for subnets. so the answer is 11111000.
(1)
Akhil said:
10 years ago
240 is the correct answer because we need adjacently 16 subnets not 18.
There is not any broadcast and subnet id separate subnets.
There is not any broadcast and subnet id separate subnets.
(1)
Supriya said:
1 decade ago
This is wrong as subnet id and broadcast address is associated with host bits not with subnet bits.
Ashok said:
1 decade ago
How we get 248?
As per me 240 is the answer.
255.255.1111 0000.0000.0000. So 2^4 = 16 subnets.
As per me 240 is the answer.
255.255.1111 0000.0000.0000. So 2^4 = 16 subnets.
ADITHYA said:
7 years ago
10 + 6 = 16 and 16 + 2 = 18. On what basis 6 and 2 are taken?
Shiva said:
9 years ago
Yeah, 240 is the correct answer (subnet-255.255.240.0).
Shewangizaw Bogale said:
9 years ago
Yes, I too agree on this, the correct answer is C. 240.
Supriya said:
9 years ago
Yes, I too agree, that 240 is the correct answer.
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