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adelina 88 [10]
3 years ago
10

g What field in the IPv4 datagram header can be used to ensure that a packet is forwarded through no more than N routers? When a

large datagram is fragmented into multiple smaller datagrams, where are these smaller datagrams reassembled into a single larger datagram? Do routers have IP addresses? If so, how many? How many bits do we have in an IPv6 address? We use hexadecimal digits (each with 4 bits) to represent an IPv6 address. How many hexadecimal digits do we need to represent an IPv6 address?
Computers and Technology
1 answer:
ad-work [718]3 years ago
4 0

Answer:

a) Time to live field

b) Destination

c) Yes, they have two ip addresses.

d) 128 bits

e) 32 hexadecimal digits

Explanation:

a) the time to live field (TTL) indicates how long a packet can survive in a network and whether the packet should be discarded. The TTL is filled to limit the number of packets passing through N routers.

b) When a large datagram is fragmented into multiple smaller datagrams, they are reassembled at the destination into a single large datagram before beung passed to the next layer.

c) Yes, each router has a unique IP address that can be used to identify it. Each router has two IP addresses, each assigned to the wide area network interface and the local area network interface.

d) IPv6 addresses are represented by eight our characters hexadecimal numbers. Each hexadecimal number have 16 bits making a total of 128 bits (8 × 16)  

e) IPv6 address has 32 hexadecimal digits with 4 bits/hex digit

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Answer:

The final case in selection sort is trivially sorted.

The final iteration in insertion sort is not needed.

Explanation:

For selection sort, you make sub arrays and find the smallest element placing it in the front and repeat until sorted.  This guarantees the final element will already be the greatest element, thus it is trivially sorted.

For Insertion sort, you use the initial element and compare it to the previous element and swap if the current is larger than the previous.  Using this sort, you will always perform n-1 comparisons where n is the total amount of elements in the array.  Thus, there are only 11 iterations for a 12 element array.

Cheers.

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####

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3 years ago
A large population of ALOHA users manages to generate 50 requests/sec, including both originals and retransmissions. Time is slo
krok68 [10]

Answer:

The answer is below

Explanation:

Given that:

Frame transmission time (X) = 40 ms

Requests = 50 requests/sec, Therefore the arrival rate for frame (G) = 50 request * 40 ms = 2 request

a) Probability that there is success on the first attempt = e^{-G}G^k but k = 0, therefore Probability that there is success on the first attempt = e^{-G}=e^{-2}=0.135

b) probability of exactly k collisions and then a success = P(collisions in k attempts) × P(success in k+1 attempt)

P(collisions in k attempts) = [1-Probability that there is success on the first attempt]^k = [1-e^{-G}]^k=[1-0.135]^k=0.865^k

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