WEEK 3 REVIEW ICMC VB EXAM QUESTIONS WITH VERIFIED SOLUTIONS LATEST UPDATE 2026
What three things are required to build a basic network? - Answers network devices, transfer
mediums, protocols
What is a protocol? - Answers agreed upon language or rules devices use to send and receive data
What are the basic cabling types? - Answers twisted pair (unshielded, shielded), coaxial cabling, fiber
optic
What are the most common network topologies? - Answers bus, ring, star, and mesh
What is the OSI model? Discuss the layers - Answers conceptual 7-layer model each with separate
network functions; physical layer, data link layer, network layer, transport layer, session layer,
presentation layer, application layer
What are some of the protocols used at the Application layer? - Answers HTTP, SMTP, POP3, DNS,
TELNET, FTP, SNMP
How are TELNET/SSH used in naval networking? - Answers remote management
What is the major difference between TCP and UDP? At which layer do they operate? - Answers TCP
is connection-oriented, reliable protocol that breaks up message into segments and is slower; UDP is
connectionless and unreliable that keeps sending messages and is faster; operate at Transport layer
What are the following protocols used for?: IP/ARP/DHCP - Answers IP: delivery routing of packets;
ARP: matches up IP addresses with MAC addressed; DHCP: dynamic assignment of IP addresses
Discuss the encapsulation methods used at each layer? - Answers Physical: bits; Data Link: frame;
Network: packets; Transport: segment Application: data
What are ports and how do we use these? - Answers application- or process-specific construct
serving as communications endpoint; can be used to shut down certain protocols
What is CSMA/CD and how does it work? - Answers collision detection protocol; first-come first-
served basis and if detection is detected, will wait random amount of time for silence and try again
What addresses are used for Ethernet frames? What information do they give? - Answers MAC
address; give destination and source address
What is ATM and how does it differ from Ethernet? - Answers Asynchronous Transfer Mode, data
travels in cells rather than packets and runs data link layer services over layer 1
What is a ISNS? - Answers Integrated Shipboard Network System, collection of workstations, servers,
switches and routers at UNCLAS and SEC levels that connect numerous systems to external routers
(like ADNS)
What is an INE and what is its purpose? - Answers encryption device that allows us to encrypt data
while still maintaining IP address
What is ADNS? - Answers provides automated pathway for information to travel along any available
transport link; functions as routing connection between shipboard LANs and off-ship WANs
What is an Autonomous System? - Answers collection of routers under mutual administration that
share the same routing methodology, limits the overhead
What are an IGP and EGP? - Answers IGP distributes routing information among routers in the AS;
EGP: distributes information outside of the AS
What is OSPF and where is it used? - Answers routing protocol which uses a algorithm to calculate
shortest path; used by UNCLAS and SEC networks in a NOC automated system
What BGP-4 and where is it used? - Answers used with EGP, moves information from NOC to DIS
automated system (AS) and vice versa
How does the USQ-144 (X)(V)2 differ from a (V)4? - Answers (V)2 have on router and the (V)4 has two
routers with one supporting communications with MAGTF
What were some of the constraints under ADNS Increment I? - Answers IP traffic uses only one RF
link; no application has priority; fixed bandwidth allocation to each enclave
What are the enhancements under ADNS Increment II? - Answers more efficient use of RF
bandwidth; prioritizing network traffic; monitor and control network based on applications
What is LQosMan? - Answers software that provides ability to monitor router connections
What is Policy Based Routing and Quality of Service? - Answers PBR: forwards and routes packets
based on POLICIES defined by network administrators
QoS: provides priority based on bandwidth, latentcy, etc.
What is Packetshaper? - Answers system that monitors traffic (top talkers, top websites, application
priority levels..), and display app-specific metric data
What three things are required to build a basic network? - Answers network devices, transfer
mediums, protocols
What is a protocol? - Answers agreed upon language or rules devices use to send and receive data
What are the basic cabling types? - Answers twisted pair (unshielded, shielded), coaxial cabling, fiber
optic
What are the most common network topologies? - Answers bus, ring, star, and mesh
What is the OSI model? Discuss the layers - Answers conceptual 7-layer model each with separate
network functions; physical layer, data link layer, network layer, transport layer, session layer,
presentation layer, application layer
What are some of the protocols used at the Application layer? - Answers HTTP, SMTP, POP3, DNS,
TELNET, FTP, SNMP
How are TELNET/SSH used in naval networking? - Answers remote management
What is the major difference between TCP and UDP? At which layer do they operate? - Answers TCP
is connection-oriented, reliable protocol that breaks up message into segments and is slower; UDP is
connectionless and unreliable that keeps sending messages and is faster; operate at Transport layer
What are the following protocols used for?: IP/ARP/DHCP - Answers IP: delivery routing of packets;
ARP: matches up IP addresses with MAC addressed; DHCP: dynamic assignment of IP addresses
Discuss the encapsulation methods used at each layer? - Answers Physical: bits; Data Link: frame;
Network: packets; Transport: segment Application: data
What are ports and how do we use these? - Answers application- or process-specific construct
serving as communications endpoint; can be used to shut down certain protocols
What is CSMA/CD and how does it work? - Answers collision detection protocol; first-come first-
served basis and if detection is detected, will wait random amount of time for silence and try again
What addresses are used for Ethernet frames? What information do they give? - Answers MAC
address; give destination and source address
What is ATM and how does it differ from Ethernet? - Answers Asynchronous Transfer Mode, data
travels in cells rather than packets and runs data link layer services over layer 1
What is a ISNS? - Answers Integrated Shipboard Network System, collection of workstations, servers,
switches and routers at UNCLAS and SEC levels that connect numerous systems to external routers
(like ADNS)
What is an INE and what is its purpose? - Answers encryption device that allows us to encrypt data
while still maintaining IP address
What is ADNS? - Answers provides automated pathway for information to travel along any available
transport link; functions as routing connection between shipboard LANs and off-ship WANs
What is an Autonomous System? - Answers collection of routers under mutual administration that
share the same routing methodology, limits the overhead
What are an IGP and EGP? - Answers IGP distributes routing information among routers in the AS;
EGP: distributes information outside of the AS
What is OSPF and where is it used? - Answers routing protocol which uses a algorithm to calculate
shortest path; used by UNCLAS and SEC networks in a NOC automated system
What BGP-4 and where is it used? - Answers used with EGP, moves information from NOC to DIS
automated system (AS) and vice versa
How does the USQ-144 (X)(V)2 differ from a (V)4? - Answers (V)2 have on router and the (V)4 has two
routers with one supporting communications with MAGTF
What were some of the constraints under ADNS Increment I? - Answers IP traffic uses only one RF
link; no application has priority; fixed bandwidth allocation to each enclave
What are the enhancements under ADNS Increment II? - Answers more efficient use of RF
bandwidth; prioritizing network traffic; monitor and control network based on applications
What is LQosMan? - Answers software that provides ability to monitor router connections
What is Policy Based Routing and Quality of Service? - Answers PBR: forwards and routes packets
based on POLICIES defined by network administrators
QoS: provides priority based on bandwidth, latentcy, etc.
What is Packetshaper? - Answers system that monitors traffic (top talkers, top websites, application
priority levels..), and display app-specific metric data
