COP4600 LATEST 2026 PRACTICE EXAM QUESTIONS AND
ANSWERS GRADED A+
✔✔What is involved in the transport layer of IP? - ✔✔TCP (Transmission Control
Protocol), UDP (User Datagram Protocol)
✔✔What is is involved in the network layer of IP? - ✔✔IPv4, IPv6
✔✔What is the access IP layer? - ✔✔Ethernet and electrical connections to
transmission medium
✔✔What IP layer is assisted by the OS? - ✔✔Application layer
✔✔What IP layers are completely handled by the OS? - ✔✔Access, Network, and
Transport layer
✔✔What is a socket? - ✔✔Is one endpoint of a two-way communication link between
two programs running on the network
✔✔Why are sockets important? - ✔✔Provides a means of inter-process communication
(IPC) by establishing named contact points between which the communication takes
place
✔✔What makes up a network system in IP? - ✔✔1. Network interface
2. Network driver
3. Protocol stack TCP/IP
✔✔(T/F) Is IP a packet switching network protocol? - ✔✔True
✔✔(Y/N) Is the data sent to the network more than just your data? - ✔✔Yes
✔✔What are the 2 number formats that processors use? - ✔✔Big-Endian and Little
Endian
✔✔What is Network byte order? - ✔✔How bytes are sent to a network (Big-Endian)
✔✔(T/F) Most processors use little-endian? - ✔✔True
✔✔(T/F) Can IPv6 store more addresses than IPv4? - ✔✔True
✔✔What is the bit-number of IPv4? - ✔✔32
✔✔What is the bit-number of IPv6? - ✔✔128
, ✔✔What are the 3 types of delivery mechanism for IP? - ✔✔1. Unicast - single
destination
2. Multicast - group destination
3. Broadcast - all network hosts
✔✔Why is IP better than OSI? - ✔✔1. More flexible
2. Less complicated
3. Easier to implement
4. Worked from the beginning
✔✔What does the Physical Layer of OSI do? - ✔✔Provides electrical connections to a
transmission medium [BITS]
✔✔Benefits/Drawbacks of UDP - ✔✔Benefits: need only one socket, faster data
transmission, sends data as a whole
Drawbacks: does not ensure data is sent and received in the same order, does not
establish connections before sending data, no receipt of data given, guarantee that data
was sent, will not retransmit/find lost data, no mechanism to handle congestion
✔✔What are some characteristics of IP? - ✔✔1. Created for ARPAnet (military
research)
2. Incremental implementation and model
3. Based on loosely layered model
✔✔What are some characteristics of OSI? - ✔✔1. ISO Standard
2. Model before implementation
3. Based on strictly controlled layers
✔✔Why does TCP implement flow control? - ✔✔It prevents network congestion (can
arise from sender sending data too fast for network or receiver to keep up)
✔✔T/F: The completion of a send means the data was successfully delivered -
✔✔False
✔✔Components of a socket address include: - ✔✔transport protocol, IP Address, Port
Number
✔✔A port identifies the ___________ we wish to communicate with - ✔✔process
✔✔How does TCP handle send and receives? - ✔✔- send call puts information in OS
buffer and sends it
- receiver side will read buffer
- one receive call does not correspond to one send call
ANSWERS GRADED A+
✔✔What is involved in the transport layer of IP? - ✔✔TCP (Transmission Control
Protocol), UDP (User Datagram Protocol)
✔✔What is is involved in the network layer of IP? - ✔✔IPv4, IPv6
✔✔What is the access IP layer? - ✔✔Ethernet and electrical connections to
transmission medium
✔✔What IP layer is assisted by the OS? - ✔✔Application layer
✔✔What IP layers are completely handled by the OS? - ✔✔Access, Network, and
Transport layer
✔✔What is a socket? - ✔✔Is one endpoint of a two-way communication link between
two programs running on the network
✔✔Why are sockets important? - ✔✔Provides a means of inter-process communication
(IPC) by establishing named contact points between which the communication takes
place
✔✔What makes up a network system in IP? - ✔✔1. Network interface
2. Network driver
3. Protocol stack TCP/IP
✔✔(T/F) Is IP a packet switching network protocol? - ✔✔True
✔✔(Y/N) Is the data sent to the network more than just your data? - ✔✔Yes
✔✔What are the 2 number formats that processors use? - ✔✔Big-Endian and Little
Endian
✔✔What is Network byte order? - ✔✔How bytes are sent to a network (Big-Endian)
✔✔(T/F) Most processors use little-endian? - ✔✔True
✔✔(T/F) Can IPv6 store more addresses than IPv4? - ✔✔True
✔✔What is the bit-number of IPv4? - ✔✔32
✔✔What is the bit-number of IPv6? - ✔✔128
, ✔✔What are the 3 types of delivery mechanism for IP? - ✔✔1. Unicast - single
destination
2. Multicast - group destination
3. Broadcast - all network hosts
✔✔Why is IP better than OSI? - ✔✔1. More flexible
2. Less complicated
3. Easier to implement
4. Worked from the beginning
✔✔What does the Physical Layer of OSI do? - ✔✔Provides electrical connections to a
transmission medium [BITS]
✔✔Benefits/Drawbacks of UDP - ✔✔Benefits: need only one socket, faster data
transmission, sends data as a whole
Drawbacks: does not ensure data is sent and received in the same order, does not
establish connections before sending data, no receipt of data given, guarantee that data
was sent, will not retransmit/find lost data, no mechanism to handle congestion
✔✔What are some characteristics of IP? - ✔✔1. Created for ARPAnet (military
research)
2. Incremental implementation and model
3. Based on loosely layered model
✔✔What are some characteristics of OSI? - ✔✔1. ISO Standard
2. Model before implementation
3. Based on strictly controlled layers
✔✔Why does TCP implement flow control? - ✔✔It prevents network congestion (can
arise from sender sending data too fast for network or receiver to keep up)
✔✔T/F: The completion of a send means the data was successfully delivered -
✔✔False
✔✔Components of a socket address include: - ✔✔transport protocol, IP Address, Port
Number
✔✔A port identifies the ___________ we wish to communicate with - ✔✔process
✔✔How does TCP handle send and receives? - ✔✔- send call puts information in OS
buffer and sends it
- receiver side will read buffer
- one receive call does not correspond to one send call
