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export_week 3 Flashcards

1
Q

A pair of sockets is called a

A

Connection

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2
Q

Protocol ___________ allows multiple protocols to work together.

A

interperability

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3
Q

Protocol ___________ allows multiple protocols to work together.

A 
Message Fields & Structure

  		 Types of messages exchanged

  		 Protocol versioning info

  		 Message sending rules

  		 Message response rules


Message Semantics

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4
Q

In the internet, an application-level protocol implementing web browsing would most likely utilize_________ as its transport-layer protocol.

A

TCP

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5
Q

The SMTP e-mail protocol is called a______ Protocol

A

Push

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6
Q

The DNS application-layer protocol utilizes the transport-layer protocol.

A

UDP

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7
Q

The reserved port for HTTP is port

A

80

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8
Q

The POP3 e-mail protocol is called a protocol.

A

Pull

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9
Q

FTP is implemented over a single TCP connection.

A

False

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10
Q

The FTP application-layer protocol utilizes the transport-layer protocol.

A

TCP

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11
Q

The HTTP application-layer protocol utilizes the transport-layer protocol.

A

TCP

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12
Q

The reserved port for SMTP is port

A

25

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13
Q

HTTP implements caching by use of a UDP check.

A

False

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14
Q

The following is a valid IP address:

130.154.465.201

A

False

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15
Q

Consider the following:

http://www.oregon.gov/SiteCollectionImages/branding/portal/bigfoot.png

What is teh Host Name?

A

www.oregon.gov

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16
Q

Consider the following:

http://www.oregon.gov/SiteCollectionImages/branding/portal/bigfoot.png

What is the Path Name?

A

SiteCollectionImages/branding/portal/bigfoot.png

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17
Q

Consider the following:

http://www.oregon.gov/SiteCollectionImages/branding/portal/bigfoot.png

The URl is

A

http://www.oregon.gov/SiteCollectionImages/branding/portal/bigfoot.png

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18
Q

Consider the following:

http://www.oregon.gov/SiteCollectionImages/branding/portal/bigfoot.png

The TLD is

A

GOV

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19
Q

There is a single, central DNS server.

A

False

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20
Q

Suppose that a client application sends a request to a server application at port 80 on a remote server. The server responds to the client’s address at

A

a port number assigned by the client’s operating system; this number is not used directly by the client application, but is sent to the server along with the original request.

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21
Q

It is acceptable to create two TCP connections on the same server/port doublet from the same client/port doublet.

A

False

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22
Q

he network layer manages communications from ________ to __________

A

Host to Host

23
Q

In the internet, an application-level protocol implemeting streaming video would most likely utilize as its transport-layer protocol.

24
Q

The minimum necessary information for identifying a process on a remote host would be

A

Remote port Number

Remote host IP

25
The reserved port for FTP data transfer is port
20
26
FTP is implemented over a pair of TCP connections.
True
27
The reserved port for FTP control is port
21
28
HTTP implements caching by use of a conditional GET.
True
29
A server-side piece of data which is used to keep track of transactions between a client and server is called a cookie.
Cookie
30
If an HTTP server can send 2 objects over a single TCP connection, this is an example of_____________HTTP
Persistent
31
The one's complement of 10010110 is
01101001
32
A program running on a host is called a ___________
Process
33
In a ___________ architecture, no one host is always on, but hosts may connect amongst themselves in an on-demand fashion.
P2P
34
A pair of sockets is called a __________.
Connection
35
The IMAP/POP3 application-layer protocols utilizes the ________ transport-layer protocol.
TCP
36
FTP is implemented over a pair of UDP connections.
False
37
The reserved port for SSH is port ________.
port 22
38
Cookies are not a security or privacy concern.
False
39
The DNS application-layer protocol utilizes the _______ transport-layer protocol.
UDP
40
The SMTP application-layer protocol utilizes the _______ transport-layer protocol.
TCP
41
A server-side piece of data which is used to keep track of transactions between a client and server is called a cookie.
False
42
The following is a valid IP address: 130.154.1.25
True
43
In the HTTP protocol, how is an object addressable?
By its Uniform Resource Locator (URL)
44
What states does HTTP preserve? 
HTTP is stateless.
45
A client-side history of transactions between a client and server using HTTP is called a
Cookie
46
How are cookies implemented in the HTTP handshaking procedure?
1. Server responds to client request, and includes in this response a request to use cookies. 2. Client either sends next message with cookies enabled (to use cookies) or disabled 3. Sever generates cookie number and send this back to client.
47
What is the goal of caching in HTTP?
to prevents the same information from being repeatedly downloaded, which would cause additional congestion in the internet
48
Is FTP a peer-to-peer or client/server protocol?
Client/server
49
What are the three major components of e-mail?
User agent (such as an email client, or webmail); a mail server; an email protocol.
50
SMTP is a_______ protocol, IMAP is a ______ protocol, POP3 is a______ protocol.
Push Pull Pull
51
How many unique network interface hardware addresses are possible?
12 hex digits means 16^12 = 281,474,976,710,656 
52
How many unique 32-bit IP addresses are possible?
32 binary digits means 232 = 4,294,967,296 unique numbers
53
What organization manages the .org TLD?
PIR, the Public Interest Registry
54
In an internet name, what is the highest-priority component? The second-highest priority component? What are subsequently prioritized components used for?
The right-most (.com, .org) TLD is the highest priority. The next-leftmost (“Comcast” in www.comcast.net) is the domain name. fields to the left of this are used internally (such as “engr” in engr.oregonstate.edu) as host names.

CS 372 (13 decks)

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