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Recent questions tagged ip-addressing

2 votes
2 answers
1
Consider the following two statements with respect to IPv4 in computer networking: P: The loopback (IP) address is a member of class B network. Q: The loopback (IP) address is used to send a packet from host to itself. What can you say about the statements P and Q? P – True; Q – False P – False; Q – True P – True; Q – True P – False; Q – False
asked Jul 2, 2019 in Computer Networks Arjun 483 views
1 vote
4 answers
2
What percentage $(\%)$ of the IPv4, IP address space do all class C addresses consume? $12.5 \%$ $25 \%$ $37.5 \%$ $50 \%$
asked Jul 2, 2019 in Computer Networks Arjun 761 views
0 votes
1 answer
3
1 vote
1 answer
5
A router has the following (CIDR) entries in its routing table: Address/Mask Next hop 135.46.56.0/22 Interface 0 135.46.60.0/22 Interface 1 192.53.40.0/23 Router 1 default Router 2 For each of the following IP addresses, what does the router do if a packet with that address arrives? (a) 135.46.63.10 (b) 135.46.57.14 (c) 135.46.52.2 (d) 192.53.40.7 (e) 192.53.56.7
asked Mar 18, 2019 in Computer Networks ajaysoni1924 105 views
0 votes
1 answer
6
The set of IP addresses from 29.18.0.0 to 19.18.128.255 has been aggregated to 29.18.0.0/17. However, there is a gap of 1024 unassigned addresses from 29.18.60.0 to 29.18.63.255 that are now suddenly assigned to a host using a different outgoing line. ... into its constituent blocks, add the new block to the table, and then see if any reaggregation is possible? If not, what can be done instead?
asked Mar 18, 2019 in Computer Networks ajaysoni1924 229 views
0 votes
1 answer
7
A router has just received the following new IP addresses: 57.6.96.0/21, 57.6.104.0/21, 57.6.112.0/21, and 57.6.120.0/21. If all of them use the same outgoing line, can they be aggregated? If so, to what? If not, why not?
asked Mar 18, 2019 in Computer Networks ajaysoni1924 171 views
0 votes
2 answers
8
A large number of consecutive IP addresses are available starting at 198.16.0.0. Suppose that four organizations, A, B, C, and D, request 4000, 2000, 4000, and 8000 addresses, respectively, and in that order. For each of these, give the first IP address assigned, the last IP address assigned, and the mask in the w.x.y.z/s notation.
asked Mar 18, 2019 in Computer Networks ajaysoni1924 145 views
0 votes
0 answers
12
Suppose that host A is connected to a router R 1, R 1 is connected to another router, R 2, and R 2 is connected to host B. Suppose that a TCP message that contains 900 bytes of data and 20 bytes of TCP header is passed to the IP code at host A for ... of 512 bytes, including an 8-byte frame header, and link R2-B can support a maximum frame size of 512 bytes including a 12-byte frame header
asked Mar 16, 2019 in Computer Networks ajaysoni1924 31 views
1 vote
1 answer
13
In a LAN network every system is identified by (a) Name (b) MAC Address (c) IP Address (d) Serial number given by manufacturer the answer is given as IP address but according to me it should be MAC address.
asked Feb 17, 2019 in Computer Networks *p 4.7k views
0 votes
0 answers
14
When we use ipv6 and ipv4 together with the help of tunneling. So if the source set the hop count so will tunnel decrement the hop count. And if tunnel decrement it so wheater it decrement at both start and end of tunnel. Suppose source set hop limit to 16 and there are 2 router and tunnel on the path. So what will be the hop count after received by receiver.
asked Jan 8, 2019 in Computer Networks Ayan21 69 views
0 votes
1 answer
15
For GATE, Zero th subnet address is considered, useable or reserved? Suppose if we have, 3 subnet bit then what will be 5th subnet? Will it be `101` or `100`? Which one will be considered in gate exam?
asked Dec 23, 2018 in Computer Networks VikramRB 74 views
0 votes
0 answers
16
https://gateoverflow.in/2062/gate2014-3-28 In the above question we are subtracting the header length from the IP paxket to find out number of IP fragments. But in this question https://gateoverflow.in/8255/gate2015-2-52 Why we are adding the header length to the UDP datagram to find number of IP fragments?
asked Dec 13, 2018 in Computer Networks Shamim Ahmed 65 views
1 vote
1 answer
17
An ISP has assigned an address block to user in which 4096 hosts can be assigned IP addresses. Which of the following can be the network ID ? 168.72.90.0/20 168.72.96.0/20 168.72.64.64/20 168.64.64.0/24
asked Dec 8, 2018 in Computer Networks Na462 283 views
0 votes
0 answers
18
Consider three IP networks A,B and C. Host HA in network A sends messages each containing 180 bytesof application data to a host HC in network C. The TCP layer prefixes 20 byte header to the message. This passes through an intermediate network B. The maximum packet ... per second). My question is what's the overhead at Network Layer and also at Transport Layer of the Host C (Destination Host)
asked Dec 5, 2018 in Computer Networks iarnav 104 views
0 votes
2 answers
19
A class B network address 130.50.0.0 is submitted as follows. The last 10 bits of the host id are allotted for host number and the remaining 6 bits are reserved for subnet number. How many subnets and number of hosts in each subnet are possible with above scheme ? 62,1022 30,510 14,254 None of these ... ? 130.50.4.1 and 130.50.16.1 130.50.1.1 and 130.50.4.1 130.50.0.0 and 130.50.3.0 None of these
asked Dec 4, 2018 in Computer Networks Na462 480 views
1 vote
1 answer
20
1 vote
0 answers
23
If Direct Broadcast Address of subnet is 201.15.16.31. Which of the following will be subnet mask ? 1. 255.255.255.240 2. 255.255.255.192 3. 255.255.255.198 4. NOTA Explain your answer
asked Oct 23, 2018 in Computer Networks aditi19 358 views
4 votes
2 answers
24
Consider an IPv4 network. Each host can generate packets at the rate of 500 packets per second. If each packet in the network is identified by unique identification number of 48 bits, then the host wrap around time for generating packets will be ________s
asked Sep 23, 2018 in Computer Networks Sambhrant Maurya 757 views
1 vote
0 answers
25
Consider the following IP address with corresponding subnet mask: IP add: 172.60.50.2 Subnet mask: 255.255.224.0 What is the range of assignable IP addresses on the subnet on which the host belongs: a) 172.60.30.0 - 172.60.63.255 b)172.60.32.1 - 172.60.63.254 c)172.60.32.1 -172.60.64.255 d)172.60.32.0 - 172.60.127.254
asked Sep 16, 2018 in Computer Networks Sambhrant Maurya 517 views
0 votes
0 answers
26
A host in a subnet has the IP address 130.83.126.10. How many hosts can be addressed in the network?
asked Sep 16, 2018 in Computer Networks Sambhrant Maurya 181 views
0 votes
1 answer
27
5 votes
2 answers
28
Consider an IPV4 addressing system,where at same time two multicast groups are ongoing,by choosing their multicast group addresses at random. The probability they interfere each other i.e. choosing same multicast address is ?
asked Sep 15, 2018 in Computer Networks Na462 442 views
0 votes
0 answers
30
An IP router implementing CIDR services a packet with address 131.23.151.76. The routers routing table has the following entries: Prefix Output Interface Identifier 131.16.0.0/12 3 131.28.0.0/14 5 131.19.0.0/16 2 131.22.0.0/15 1 The identifier of the output interface on which this packet will be forwarded is______________
asked Jul 30, 2018 in Computer Networks Sumit Singh Chauhan 66 views
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