📄 quiz 1.txt
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8.
Which of the following pairs of entities name a client and one of its servers?
Google search engine/www.example.com
Web browser/Google search engine
Email client/Web browser
(a) I, II, and III
(b) II only
(c) I and II only
(d) II and III only
Correct answer is (c)
Your score on this question is: 0.00
Feedback:
See section 1.1.1 of the course notes.
(b) The search engine also has to search other servers.
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9.
Two packets A and B are sent in that order through a connectionless communication network. They will arrive at the destination
(a) in the order A-B, after possibly having traversed different routes
(b) in the order A-B, after having traversed the same route
(c) in any order, after possibly having traversed different routes
(d) in any order, after having traversed the same route
Correct answer is (c)
Your score on this question is: 10.00
Feedback:
See section 1.1.2 of the course notes.
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10.
We send a packet from host A to host B, which immediately acknowledges it. We measure the interval between the time the packet is sent by A and its acknowledgement is received. This interval is found to be 180 milliseconds. What can be said about the latency of the link from A to B?
(a) It is smaller than 180 ms.
(b) It is exactly 180 ms.
(c) It is exactly 90 ms.
(d) It is greater than 180 ms.
Correct answer is (a)
Your score on this question is: 10.00
Feedback:
See section 1.1.4 of the course notes.
View Assessment Result: Multiple-Choice Quiz 1
Your performance was as follows:
1.
John is using his bank's Web server to pay his telephone bill electronically. Which kind(s) of network interaction take(s) place in this Scenario, from the moment John logs into his bank's Web site until the telephone company receives the money?
People-people
People-computer
Computer-computer
(a) II only
(b) III only
(c) I, II, and III
(d) II and III only
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.1 of the course notes.
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2.
A computer sends 100 Kbytes of aggregate data to another computer through the network. If this transmission time takes 10 seconds and setup time is negligible, the throughput of this network is
(a) not able to be determined with the information given
(b) exactly 10 Kbps
(c) in the range from 60 to 120 Kbps (kilobits per second)
(d) in the range from 6 to 12 Kbps (kilobits per second)
Correct answer is (c)
Your score on this question is: 10.00
Feedback:
See section 1.1.4 of the course notes.
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3.
What can be said concerning the protocol that is used by the implementation of the network layer of an Internet host?
It guarantees delivery.
It is the Internet Protocol (IP).
It uses services provided by the session layer.
(a) I and II only
(b) none
(c) I only
(d) II only
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.1.5 of the course notes.
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4.
The Maximum Transfer Unit (MTU) is a parameter of
(a) the application protocol
(b) the technology of the physical network
(c) the size of data sent by the application
(d) the operating system
Correct answer is (b)
Your score on this question is: 0.00
Feedback:
See section 1.1.1 of the course notes.
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5.
Two packets A and B are sent in that order through a connectionless communication network. They will arrive at the destination
(a) in the order A-B, after having traversed the same route
(b) in any order, after possibly having traversed different routes
(c) in any order, after having traversed the same route
(d) in the order A-B, after possibly having traversed different routes
Correct answer is (b)
Your score on this question is: 10.00
Feedback:
See section 1.1.2 of the course notes.
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6.
All store-and-forward networks are
(a) packet or message switched networks
(b) connection-based networks
(c) broadcast networks
(d) connectionless networks
Correct answer is (a)
Your score on this question is: 0.00
Feedback:
See section 1.1.1 of the course notes.
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7.
You have recently become the first network engineer of a large corporation with offices worldwide. The company is considering the installation of a data network, but the Board of Directors is rather old-fashioned and does not see the need to change the company's time-honored business practices. Your first task at the job is to justify your salary and the cost of a new network, and for this purpose you are about to give a presentation to the Board of Directors. Which of the following would you include in your presentation? Assume the directors are extremely intelligent, though perhaps not knowledgeable in your field.
Lower expenditures on computer hardware
Higher availability of customer services
Better protection of the company's proprietary information
(a) II and III
(b) I and II only
(c) II only
(d) I and III only
Correct answer is (b)
Your score on this question is: 10.00
Feedback:
See section 1.1 of the course notes.
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8.
The transmission of high-quality, interactive voice and video over the current Internet is difficult because today's Internet
(a) gives higher priority to bulk data transfers
(b) does not really have sufficient throughput
(c) uses connectionless protocols
(d) is unable to guarantee minimum throughput or maximum latency for a given connection
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.1.4 of the course notes.
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9.
Which of the following distinguish stream sockets (e.g., TCP) from datagram sockets (e.g., UDP)?
Stream sockets guarantee delivery of the data sent through them.
Stream sockets can be used to send application data to a remote host, whereas datagram sockets can only send control commands.
Stream sockets have greater overhead.
(a) I only
(b) II and III only
(c) I and III only
(d) I and II only
Correct answer is (c)
Your score on this question is: 10.00
Feedback:
See section 1.1.1 of the course notes.
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10.
In a broadcast network
(a) all computers see and process the application data within all packets
(b) all computers see all packets, but the application data in each packet is only processed by the destination computer
(c) only the computers that are tuned to a channel see and process the packets in that channel
(d) only the destination computer sees a packet
Correct answer is (b)
Your score on this question is: 10.00
Feedback:
See section 1.1.1 of the course notes.
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Go to top of assessment.
Total score: 80.00
Total score: 60.00
1.
Which of the following pairs of entities name a client and one of its servers?
1. Google search engine/www.example.com
2. Web browser/Google search engine
3. Email client/Web browser
(a) II and III only
(b) I, II, and III
(c) I and II only
(d) II only
Correct answer is (c)
Your score on this question is: 10.00
Feedback:
See section 1.1.1 of the course notes.
2.
We send a packet from host A to host B, which immediately acknowledges it. We measure the interval between the time the packet is sent by A and its acknowledgement is received. This interval is found to be 180 milliseconds. What can be said about the latency of the link from A to B?
(a) It is smaller than 180 ms.
(b) It is exactly 90 ms.
(c) It is exactly 180 ms.
(d) It is greater than 180 ms.
Correct answer is (a)
Your score on this question is: 10.00
Feedback:
See section 1.1.4 of the course notes.
3.
Two packets A and B are sent in that order through a connection-oriented communication network. They could arrive at the destination
(a) only in the order A-B, after possibly having traversed different routes
(b) in any order, after having traversed the same route
(c) only in the order A-B, after having traversed the same route
(d) in any order, after possibly having traversed different routes
Correct answer is (c)
Your score on this question is: 0.00
Feedback:
See section 1.1.2 of the course notes.
4.
Which of the following activities use an inter-network?
1. A phone call from Pittsburgh in the United States to Chennai in India
2. A phone call from a wired phone to a mobile ("cell") phone
3. A chat session between two computers connected to an office Ethernet
(a) III only
(b) I and II only
(c) I, II, and III
(d) I only
Correct answer is (b)
Your score on this question is: 0.00
Feedback:
See section 1.1.6 of the course notes.
5.
Which of the following are specified by the HTTP protocol?
1. The syntax of the request header
2. The syntax of the response header
3. The specific legal names of the request header fields
(a) I, II, and III
(b) I only
(c) I and III only
(d) I and II only
Correct answer is (d)
Your score on this question is: 0.00
Feedback:
See section 1.1.1 of the course notes.
6.
The Maximum Transfer Unit (MTU) is a parameter of
(a) the size of data sent by the application
(b) the application protocol
(c) the operating system
(d) the technology of the physical network
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.1.1 of the course notes.
7.
The Internet received its name in the 1980s because
(a) it was an interim (temporary) design of what it later became, but the name stuck
(b) it consisted of many interconnected networks
(c) it was meant to be a network internal to the United States Department of Defense
(d) it achieved international scope with the addition of the City University of London
Correct answer is (b)
Your score on this question is: 10.00
Feedback:
See section 1.1.6 of the course notes.
8.
Which of the following methods are invoked by a server implemented with sockets?
1. connect( )
2. listen( )
3. accept( )
(a) III only
(b) I, II, and III
(c) II only
(d) II and III only
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.1.1 of the course notes.
9.
Every Protocol Data Unit (PDU) that is sent by a protocol layer to its remote peer on the destination system always includes:
1. The headers for all the protocols of the layers above it
2. The headers for the protocol of the layer below it
3. Application Data
(a) None
(b) III only
(c) I and III only
(d) I, II, and III
Correct answer is (a)
Your score on this question is: 0.00
Feedback:
See section 1.1.5 of the course notes.
10.
You have recently become the first network engineer of a large corporation with offices worldwide. The company is considering the installation of a data network, but the Board of Directors is rather old-fashioned and does not see the need to change the company's time-honored business practices. Your first task at the job is to justify your salary and the cost of a new network, and for this purpose you are about to give a presentation to the Board of Directors. Which of the following would you include in your presentation? Assume the directors are extremely intelligent, though perhaps not knowledgeable in your field.
1. Lower expenditures on computer hardware
2. Higher availability of customer services
3. Better protection of the company's proprietary information
(a) I and II only
(b) I and III only
(c) II and III
(d) II only
Correct answer is (a)
Your score on this question is: 10.00
Feedback:
See section 1.1 of the course notes.
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