Homework Answers
Range of addresses in network 128.171.0.0/16 are HostMin: 128.171.0.1 HostMax: 128.171.255.254 128.171.17.56 is in the network 128.171.0.0/16 So, answer is row 2
2
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Row Network/Subnet 0.0.0.0 1 128.171.0.0 172.30.33.0 Mask (/Prefix) Metric (Cost) Interface Next Hop Router 0.0.0.0 (/0)...
Question 48 10 pts Row Mask (/Prefix) Interface Destination Network or Subnet Metric (Cost) Next- Hop...
Question 48 10 pts Row Mask (/Prefix) Interface Destination Network or Subnet Metric (Cost) Next- Hop Router 128.171.0.0 47 2. G 1 2 255.255.0.0 (116) 255.255.255.0 (124) 172.30.33.0 0 1 Local 3 60.168.6.0 255.255.255.0 (124) 12 2 G 4 123.0.0.0 255.0.0.0 (8) 33 2 G 5 172.29.8.0 34 1 F 255.255.255.0 (124) 255.255.255.0 (124) 6 172.40.6.0 47 3 H 7 128.171.17.0 55 3 H 00 172.29.8.0 20 3 H 9 172.12.6.0 23 1 TI 10 172.30.12.0 255.255.255.0 (24) 255.255.255.0 (124)...
Test Your Understanding 10. a) Distinguish between Step 1 and Step 2 in the routing process. b) If any row other than the default row matches an IPv4 address, why will the router never choose...
Test Your Understanding 10. a) Distinguish between Step 1 and Step 2 in the routing process. b) If any row other than the default row matches an IPv4 address, why will the router never choose the default row? c) Which rows in Figure 8-11 match 128.171.17.13? (Don't forgst the default row.) Show your calculations for rows that match. d) Which of these is the best-match row? Justify your answer. e) What rows match 172.40.17.6? Show your calculations for rows that...
If an IP address has a prefix /24, what would the subnet mask be? 255.255.255.224 255.255.0.0...
If an IP address has a prefix /24, what would the subnet mask be? 255.255.255.224 255.255.0.0 255.0.0.0 255.255.255.192 255.255.255.0
1. (IP Forwarding) A router has the following entries in its routing table Address/mask 135.46.56.0/22 135.46.60.0/22...
1. (IP Forwarding) A router has the following entries in its routing table Address/mask 135.46.56.0/22 135.46.60.0/22 192.53.40.0/23 0.0.0.0/0 Next hop Interface 0 Interface 1 Router 1 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
Computer A Windows Router 1 E0/0 E0/1 GALERIE E0/1 Computer B E0/0 GRE0/2 Router 2 Server...
Computer A Windows Router 1 E0/0 E0/1 GALERIE E0/1 Computer B E0/0 GRE0/2 Router 2 Server webmail.njit.edy Internet Device Interface IP address MAC address Subnet Mask Gateway Router 1 E0/0 192.168.23.254 00:50:00:01:11:10 255.255.255.0 192.168.23.254 Router 1 E0/1 192.168.12.1 00:50:00:01:11:11 255.255.255.252 Router 2 E0/0 192.167.13.254 00:50:00:02:22:20 255.255.255.0 192.168.13.254 Router 2 E0/1 192.168.12.2 00:50:00:02:22:21 255.255.255.252 Router 2 E0/2 64.95.38.13 00:50:00:02:22:23 255.255.255.252 64.95.38.14 Computer A ETHO 192.168.23.10 23:AA:B1:A1:A3:11 255.255.255.0 192.168.23.254 Computer B ETHO 192.168.23.20 23:FD:1D:A1:02:24 255.255.0.0 192.168.23.254 Server ETHO 192.168.13.1 13:22:02:00:0A:10 255.255.255.0 192.168.13.254...
1.Suppose 98.10.72.181 is on a network with a /24 subnet prefix and a subnet field just...
1.Suppose 98.10.72.181 is on a network with a /24 subnet prefix and a subnet field just large enough to support 128 subnets. What is the corresponding network prefix, with the mask in slash length (CIDR) format? 2.One of Facebook's IPv4 blocks is a 31.13.64.0/18. How many IP addresses does this block of addresses have? 3.For each of the following destination addresses, provide the address of the subnet within the above Facebook /18 block that it will be forwarded to. Each...
A router has the following CIDR entries in its routing table: Address/mask 128.56.24.0/22 128.56.60.0/22 default Next...
A router has the following CIDR entries in its routing table: Address/mask 128.56.24.0/22 128.56.60.0/22 default Next hop Interface 0 Interface 1 Router 2 A packet comes with IP address of 128.56.63.10. What does the router do?
5. A router has the following CIDR entries in its routing table Address/mask 135.46.0.0/16 135.46.60.0/24 135.46.80.12/32...
5. A router has the following CIDR entries in its routing table Address/mask 135.46.0.0/16 135.46.60.0/24 135.46.80.12/32 192.53.40.0/24 192.53.40.7/32 0.0.0.0/0 (default) RoterF Next hop Router A Router B Router C Router D Router E For each of the following IP addresses, list all the matching targets first, and then indicate which match is chosen and explain why a) 135.46.60.10 b) 135.46.57.14 c) 135.46.80.18 d) 192.53.40.7 e) 192.53.56.7
10. In a network an IP address and prefix is given as 192.168.130.34/17. What is the...
10. In a network an IP address and prefix is given as 192.168.130.34/17. What is the subnet mask? (A) 0.0.127.255 (B) 255.255.0.0 (C) 255.255.128.0 (D) 0.0.2.34 11. In a network an IP address and prefix are given as 192.168.130.34/17. How many host addresses are there? (A) 34 (B) 32766 (C) 131072 (D) 2 12. One result of subnetting is that the size of the routing table in the routers is reduced (A) True (8) False 13. The port number is...
Question 6 A router has the following routing table: Destination Address Range Link Interface 123.46.56.0/22 1...
Question 6 A router has the following routing table: Destination Address Range Link Interface 123.46.56.0/22 1 123.46.56.0/23 2 123.46.56.0/24 3 Otherwise 4 The router uses longest-prefix matching. On which interface will the router send each of the following received packets: Packet 1 with a destination: 123.46.56.1 Packet 2 with a destination: 123.46.56.2 Packet 3 with a destination: 123.46.56.3 Packet 4 with a destination: 123.46.56.4
Question 48 10 pts Row Mask (/Prefix) Interface Destination Network or Subnet Metric (Cost) Next- Hop Router 128.171.0.0 47 2. G 1 2 255.255.0.0 (116) 255.255.255.0 (124) 172.30.33.0 0 1 Local 3 60.168.6.0 255.255.255.0 (124) 12 2 G 4 123.0.0.0 255.0.0.0 (8) 33 2 G 5 172.29.8.0 34 1 F 255.255.255.0 (124) 255.255.255.0 (124) 6 172.40.6.0 47 3 H 7 128.171.17.0 55 3 H 00 172.29.8.0 20 3 H 9 172.12.6.0 23 1 TI 10 172.30.12.0 255.255.255.0 (24) 255.255.255.0 (124)...
Test Your Understanding 10. a) Distinguish between Step 1 and Step 2 in the routing process. b) If any row other than the default row matches an IPv4 address, why will the router never choose the default row? c) Which rows in Figure 8-11 match 128.171.17.13? (Don't forgst the default row.) Show your calculations for rows that match. d) Which of these is the best-match row? Justify your answer. e) What rows match 172.40.17.6? Show your calculations for rows that...
If an IP address has a prefix /24, what would the subnet mask be? 255.255.255.224 255.255.0.0 255.0.0.0 255.255.255.192 255.255.255.0
1. (IP Forwarding) A router has the following entries in its routing table Address/mask 135.46.56.0/22 135.46.60.0/22 192.53.40.0/23 0.0.0.0/0 Next hop Interface 0 Interface 1 Router 1 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
Computer A Windows Router 1 E0/0 E0/1 GALERIE E0/1 Computer B E0/0 GRE0/2 Router 2 Server webmail.njit.edy Internet Device Interface IP address MAC address Subnet Mask Gateway Router 1 E0/0 192.168.23.254 00:50:00:01:11:10 255.255.255.0 192.168.23.254 Router 1 E0/1 192.168.12.1 00:50:00:01:11:11 255.255.255.252 Router 2 E0/0 192.167.13.254 00:50:00:02:22:20 255.255.255.0 192.168.13.254 Router 2 E0/1 192.168.12.2 00:50:00:02:22:21 255.255.255.252 Router 2 E0/2 64.95.38.13 00:50:00:02:22:23 255.255.255.252 64.95.38.14 Computer A ETHO 192.168.23.10 23:AA:B1:A1:A3:11 255.255.255.0 192.168.23.254 Computer B ETHO 192.168.23.20 23:FD:1D:A1:02:24 255.255.0.0 192.168.23.254 Server ETHO 192.168.13.1 13:22:02:00:0A:10 255.255.255.0 192.168.13.254...
1.Suppose 98.10.72.181 is on a network with a /24 subnet prefix and a subnet field just large enough to support 128 subnets. What is the corresponding network prefix, with the mask in slash length (CIDR) format? 2.One of Facebook's IPv4 blocks is a 31.13.64.0/18. How many IP addresses does this block of addresses have? 3.For each of the following destination addresses, provide the address of the subnet within the above Facebook /18 block that it will be forwarded to. Each...
A router has the following CIDR entries in its routing table: Address/mask 128.56.24.0/22 128.56.60.0/22 default Next hop Interface 0 Interface 1 Router 2 A packet comes with IP address of 128.56.63.10. What does the router do?
5. A router has the following CIDR entries in its routing table Address/mask 135.46.0.0/16 135.46.60.0/24 135.46.80.12/32 192.53.40.0/24 192.53.40.7/32 0.0.0.0/0 (default) RoterF Next hop Router A Router B Router C Router D Router E For each of the following IP addresses, list all the matching targets first, and then indicate which match is chosen and explain why a) 135.46.60.10 b) 135.46.57.14 c) 135.46.80.18 d) 192.53.40.7 e) 192.53.56.7
10. In a network an IP address and prefix is given as 192.168.130.34/17. What is the subnet mask? (A) 0.0.127.255 (B) 255.255.0.0 (C) 255.255.128.0 (D) 0.0.2.34 11. In a network an IP address and prefix are given as 192.168.130.34/17. How many host addresses are there? (A) 34 (B) 32766 (C) 131072 (D) 2 12. One result of subnetting is that the size of the routing table in the routers is reduced (A) True (8) False 13. The port number is...
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