Upgrade to remove ads
Only $35.99/year

CSCI 4345 Exam 2 Study Guide for Final

Terms in this set (59)

In computers and networking, security is usually related to three areas that are abbreviated as CIA. In that context, it stands for:
Confidentiality, Integrity, Availability
The name of the file that provides URLs for different chunks of different rates when a client is requesting a movie, say from YouTube or Netflix is called:
Manifest file
The newer IP address (IP-v6) has a size of:
128 bits
Write the full name of the following abbreviations: HTTP, TCP, UDP, HTTP, FTP, MODEM, DSL, SSL, SMTP, DNS, DASH, JPEG, MPEG
...
Ignoring the time to transmit each object file and assuming parallelism is implemented, the amount of time that a non-persistent http connection uses to send a base html file with two embedded objects in it (including the connection establishment time):
6RTT
The transport layer is implemented in the:
End system such as servers and PCs
An example of a device that uses all the five layers is:
A PC
In the CDN diagram, there are two logical main servers for Netcinema (other than the authoritative DNS servers). Netcinema.com and Kingcdn.com. Which statement describes their roles correctly:
Netcinema.com is used for logging, accounting, and browsing while and Kingcdn.com is used for the actual delivery of the requested movie/file
SMTP, HTTP, use the following ports respectively:
25,80
The Resource Record (RR) used to get the IP address of a given hostname is of type
Type A
What is the name of the HTTP mechanism that allows for servers to maintain state at the client side?
...
The 4th type of DNS server that is usually installed by a university, company, or institution to contact other DNS servers is called:
Local DNS
What are two Pull protocols used by the user agent to read email stored at their email server?
...
According to the Internet Stack Model, the transport layer produces:
Segments
Compared to TCP, UDP does NOT provide
...
The DNS query shown on the right is
Recursive Query
What type of host is TCP segment # 1 sent to?
HTTP Server (Web Server)
Which of the following is NOT true when it comes to cookies?
Clients always allow cookies from server web sites
(Short Design/Analysis Question) You have been given the charge of creating a networking application that will allow a faculty to reserve a room on campus using his computer or laptop or smartphone from anywhere he/she is at. The application will be installed by the faculty using the university software center. As the manager for this project, how would you go about designing the application (deciding the basic parameters of the application and the services needed from other layers), and based on our knowledge so far, knowing that the application needs to send the packets reliably with an acceptable 1-5 second of delay.
...
For the client to allow cookie, the server must do the following:
Server must include a cookie header in its HTTP response message to the client
What is the name of the HTTP mechanism that allows for faster access (on average) to HTTP remote servers and uses an extra server between the client and the remote server to be contacted?
...
An example of a device that uses only the lower two layers is:
A switch
BitTorrent uses HTTP for tracker communications. The well-known TCP port for BitTorrent tracker port is:
6969
The older IP address (IP-v4) has a size of:
32 bits
SMTP and HTTP, ALL use
TCP
The top layer in the Internet Stack Model is
Application Layer
The Resource Record (RR) used to get the IP address of a mail server associated with specific hostname is
Type MX
If you decide to create an application that will not lose any data when transmitting packets, you are more likely to use which transport protocol:
TCP
The process of passing data (message or segment or datagram or frames) from one layer to the next while adding headers (from the application layer to the physical layer) and at the receiver (from the physical to the application) is called:
Encapsulation
The difference between HTTP POST and GET commands is:
in POST form input is uploaded to server in entity body
What is the Push protocol used by the user agent to send email to its email server?
...
When it comes to video compression, all algorithms use (take advantage of) the __ inherent in the images of the video taken over time:
Redundancy
The layer in the Internet Stack Model that is responsible for reliable or unreliable delivery of packets is:
Transport layer
Comparing POP3 and IMAP:
Both are mail access protocol with IMAP having more features including manipulation of stored messages on server
How many bytes of data is packet # 1 carrying?
62
DNS is designed as a:
Distributed, Hierarchical Database
According to the Internet Stack Model, the application layer produces:
Messages
Ignoring the time to transmit each object file and assuming parallelism is implemented, the amount of time that a persistent http connection uses to send a base html file object is (including the connection establishment time):
2RTT
When setting up a DNS server, the administrator will set the server to listen to port number:
53
BitTorrent uses TCP as its transport protocol for exchanging pieces, and it uses HTTP for tracker comms. The well-known TCP port for BitTorrent traffic is:
6881-6889
To use cookies effectively, the cookie id must be maintained at the back-end database at server web site
True
What are the four basic differences between TCP and UDP?
...
Web caches (proxy servers) reduce response time for actual-client request by ALL except:
Sending stored object to actual client all the time
In the P2P architecture, the time to distribute a file F (in bits) to N clients is approximated by (us is the server upload rate, sum(ui) is the sum of all current users upload rate.
Time ~max{NF/us,F/dmin, NF/{(us+sum(ui)}
The protocol between mail servers to send email messages is always:
SMTP
According to the Internet Stack Model, the physical layer produces:
Bits
The Resource Record used to get the IP address of the authoritative name server for a specific domain is
Type NS
What are the three types of hierarchical DNS servers?
...
To what IP address is the TCP segment in packet # 1 sent?
128.119.245.12
Compared to UDP, TCP is
D. A and C
If you decide to create a client/server networking application. You have to choose and fix two parameters for the server (for all clients to use) from the network and the transport layers. These are:
IP address and the port number
According to the Internet Stack Model, the link layer produces:
Frames
According to the Internet Stack Model, the network layer produces:
Datagrams
There are 13 logical servers worldwide of this DNS type:
Root DNS Servers
An example of a device that uses only the lower three layers is:
A router
What are the two major application architectures used in designing and creating network application?
...
If you decide to create a multimedia application that can afford to lose some packets, you are more likely to use which transport protocol:
UDP
The transport layer provides:
Logical communications between processes
DNS query shown on the right is
Iterated Query
Other sets by this creator