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Quiz 8
May 21, 2015
Computer Engineering 80N
Left Neighbor:
Right Neighbor:
Keep this side up on your desk until you are told to turn the page over.
This is a closed book quiz. No calculators.
First Name
Last Name
CE 80N Quiz 8, May 21, 2015
The following questions refer to network diagram below.
Alice
Bob
Carol
Router #1
240.0.0.1
/24
240.0.0.2
/24
240.0.0.1
/24
Router #2
230.0.0.2
/24
Santa Cruz Network
Trent
230.0.0.3
/24
220.0.0.1
/24
Middle Network
220.0.0.2
/24
220.0.0.2
/24
New York Network
1. (1 point) What is the network address of the Santa Cruz Network.
.
.
.
/
2. (1 point) What is the network address of the New York Network.
.
.
.
/
3. (1.5 points) The Routing Table of the Router #1 is below. Add an entry that lets laptops in Santa Cruz
send packets to laptops in New York.
Network Address
.
.
.
Netmask
.
Next Hop
.
.
.
.
.
/
4. (1.5 points) The Routing Table of the Router #2 is below. Add an entry that lets laptops in New York
send packets to laptops in Santa Cruz.
Network Address
.
.
.
Netmask
.
Next Hop
.
.
.
.
.
/
5. (1 point) Trent wants to check how many hops there are between his laptop and Bob ’s laptop. What
command can Trent type on his laptop to determine the number of hops?
6. (1 point) Alice wants to check that her laptop can communicate with Carol ’s laptop. What command
can Alice type on her laptop to check whether there can be a connection?
7. (1 point) Bob and Carol each start a videoconferencing program that streams audio and video to the
other’s laptop. Which Layer-4 protocol does the program use for its packets?
8. (2 points) A packet is traveling through the network from Alice ’s laptop to Trent ’s laptop. When the
packet is on the Middle Network, what are its IP addresses?
Ethernet Header
Dest
Src
Type
MAC MAC
IP Header
Destination
IP Address
Source
IP Address
.
.
.
.
.
Rest of
IP Hdr.
.
Data
Quiz 8
May 21, 2015
Computer Engineering 80N
Left Neighbor:
Right Neighbor:
Keep this side up on your desk until you are told to turn the page over.
This is a closed book quiz. No calculators.
First Name
Last Name
CE 80N Quiz 8, May 21, 2015
The following questions refer to network diagram below.
Linda
Pat
Wendy
Router #1
180.0.0.1
/24
180.0.0.2
/24
180.0.0.1
/24
Router #2
170.0.0.2
/24
Santa Cruz Network
Craig
170.0.0.3
/24
160.0.0.1
/24
Middle Network
160.0.0.2
/24
160.0.0.2
/24
New York Network
1. (1 point) What is the network address of the Santa Cruz Network.
.
.
.
/
2. (1 point) What is the network address of the New York Network.
.
.
.
/
3. (1.5 points) The Routing Table of the Router #1 is below. Add an entry that lets laptops in Santa Cruz
send packets to laptops in New York.
Network Address
.
.
.
Netmask
.
Next Hop
.
.
.
.
.
/
4. (1.5 points) The Routing Table of the Router #2 is below. Add an entry that lets laptops in New York
send packets to laptops in Santa Cruz.
Network Address
.
.
.
Netmask
.
Next Hop
.
.
.
.
.
/
5. (1 point) Craig wants to check how many hops there are between his laptop and Pat ’s laptop. What
command can Craig type on his laptop to determine the number of hops?
6. (1 point) Linda wants to check that her laptop can communicate with Wendy’s laptop. What command
can Linda type on her laptop to check whether there can be a connection?
7. (1 point) Pat and Wendy each start a videoconferencing program that streams audio and video to the
other’s laptop. Which Layer-4 protocol does the program use for its packets?
8. (2 points) A packet is traveling through the network from Linda ’s laptop to Craig ’s laptop. When the
packet is on the Middle Network, what are its IP addresses?
Ethernet Header
Dest
Src
Type
MAC MAC
IP Header
Destination
IP Address
Source
IP Address
.
.
.
.
.
Rest of
IP Hdr.
.
Data
Quiz 8
May 21, 2015
Computer Engineering 80N
Left Neighbor:
Right Neighbor:
Keep this side up on your desk until you are told to turn the page over.
This is a closed book quiz. No calculators.
First Name
Last Name
CE 80N Quiz 8, May 21, 2015
The following questions refer to network diagram below.
Carol
Sam
Sybil
Router #1
150.0.0.1
/24
150.0.0.2
/24
150.0.0.1
/24
Router #2
140.0.0.2
/24
Santa Cruz Network
Oscar
140.0.0.3
/24
130.0.0.1
/24
Middle Network
130.0.0.2
/24
130.0.0.2
/24
New York Network
1. (1 point) What is the network address of the Santa Cruz Network.
.
.
.
/
2. (1 point) What is the network address of the New York Network.
.
.
.
/
3. (1.5 points) The Routing Table of the Router #1 is below. Add an entry that lets laptops in Santa Cruz
send packets to laptops in New York.
Network Address
.
.
.
Netmask
.
Next Hop
.
.
.
.
.
/
4. (1.5 points) The Routing Table of the Router #2 is below. Add an entry that lets laptops in New York
send packets to laptops in Santa Cruz.
Network Address
.
.
.
Netmask
.
Next Hop
.
.
.
.
.
/
5. (1 point) Oscar wants to check how many hops there are between his laptop and Sam ’s laptop. What
command can Oscar type on his laptop to determine the number of hops?
6. (1 point) Carol wants to check that her laptop can communicate with Sybil ’s laptop. What command
can Carol type on her laptop to check whether there can be a connection?
7. (1 point) Sam and Sybil each start a videoconferencing program that streams audio and video to the
other’s laptop. Which Layer-4 protocol does the program use for its packets?
8. (2 points) A packet is traveling through the network from Carol ’s laptop to Oscar ’s laptop. When the
packet is on the Middle Network, what are its IP addresses?
Ethernet Header
Dest
Src
Type
MAC MAC
IP Header
Destination
IP Address
Source
IP Address
.
.
.
.
.
Rest of
IP Hdr.
.
Data