- What is the primary problem the Transport (TCP) layer is supposed to solve?
Move packets across multiple hops from a source to destination computer
Move packets across a single physical connection
Deal with lost and out-of-order packets
Deal with encryption of sensitive data
- What is in the TCP header?
Physical address
IP Address and Time to Live
Port number and offset
Which document is being requested
- Why is "window size" important for the proper functioning of the network?
Because packets that are too large will clog fiber optic connections
It prevents a fast computer from sending too much data on a slow connection
It limits the number of hops a packet can take before it is dropped
It determines what part of an IP address is the network number
- What happens when a sending computer receives an acknowledgement from the receiving computer?
The sending computer resends the data to make sure it was transmitted accurately
The sending computer sends more data up to the window size
The sending computer sends an "acknowledgment for the acknowledgment"
The sending computer sends the acknowledgement to the Internet Map (IMAP)
- Which of these detects and takes action when packets are lost?
Sending computer
Network gateway
Core Internet routers
Receiving computer
- Which of these retains data packets so they can be retransmitted if a packets lost?
Sending computer
Network gateway
Core Internet routers
Receiving computer
- Which of these is most similar to a TCP port?
Train station
Undersea network cable
Apartment number
Sculpture garden
- Which half of the client/server application must start first?
Client
Server
- What is the port number for the Domain Name System?
22
80
53
143
- What is the port number for the IMAP mail retrieval protocol?
22
80
53
143