CS6250 Computer Network Exam
Questions And Correct Answers
How did Licklider and his team in the early 1960s experiment with a precursor to the
internet?
Connecting two computers over a dial-up telephone line
What is the Domain Name System (DNS) designed to do primarily?
Translate domain names into IP addresses
What is the architectural design of the Internet protocol stack based on?
Layers
T/F: Both the data link and transports layer protocols may provide error correction
True
What allows for communication between the applications layer and the transport
layer
Sockets
,Which of the following protocols belong to the application layer?
[ethernet/DNS/UDP/IP]
DNS
Which two protocols belong to the transport layer? [IP/TCP/UDP/HTTP]
TCP, UDP
When an application sends a packet of information across the network, this packet
travels down the IP stack and undergoes what process
Encapsulation
According to the end-to-end principle, where should most of the Internet's
functionality/intelligence be implemented?
At the edges of the network
What is the difference between hubs, bridges, and routers?
They operate on different layers of the IP stack
, T/F: the UDP and TCP protocols have a large overlap of functionality
false
T/F: the transport layer protocols offer a logical connection between processes, only if
the hosts reside in the same network
false
T/F: a sender host receives a message from the application layer it encapsulates it
with the transport layer header before passing it down to the network layer
true
T/F: an application running on a host can bind to multiple sockets simultaneously
true
T/F: a host cannot maintain a TCP socket and a UDP socket simultaneously
false
T/F: the identifier of a UDP socket is a tuple of destination IP address and port
true
Questions And Correct Answers
How did Licklider and his team in the early 1960s experiment with a precursor to the
internet?
Connecting two computers over a dial-up telephone line
What is the Domain Name System (DNS) designed to do primarily?
Translate domain names into IP addresses
What is the architectural design of the Internet protocol stack based on?
Layers
T/F: Both the data link and transports layer protocols may provide error correction
True
What allows for communication between the applications layer and the transport
layer
Sockets
,Which of the following protocols belong to the application layer?
[ethernet/DNS/UDP/IP]
DNS
Which two protocols belong to the transport layer? [IP/TCP/UDP/HTTP]
TCP, UDP
When an application sends a packet of information across the network, this packet
travels down the IP stack and undergoes what process
Encapsulation
According to the end-to-end principle, where should most of the Internet's
functionality/intelligence be implemented?
At the edges of the network
What is the difference between hubs, bridges, and routers?
They operate on different layers of the IP stack
, T/F: the UDP and TCP protocols have a large overlap of functionality
false
T/F: the transport layer protocols offer a logical connection between processes, only if
the hosts reside in the same network
false
T/F: a sender host receives a message from the application layer it encapsulates it
with the transport layer header before passing it down to the network layer
true
T/F: an application running on a host can bind to multiple sockets simultaneously
true
T/F: a host cannot maintain a TCP socket and a UDP socket simultaneously
false
T/F: the identifier of a UDP socket is a tuple of destination IP address and port
true
