QUIZ COMPUTER NETWORKING
FUNDAMENTALS CHAPTER 3 EXAM
QUESTIONS AND ANSWERS
What four functions do all routers perform? - Answer-Connect dissimilar networks,
Interpret layers 3 & 4 addressing, Determine best path to route data, and Reroute data if
path is down
What database does a router consult before determining the most efficient path for
delivering a message? - Answer-Routing Table
Manually modifying a routing table can cause messages to get stuck hopping between a
limited number of routers. What is this problem called? - Answer-Routing Loop
Give three examples of routing metrics used by routers to determine the best of various
available routing paths. - Answer-Hop count, cost, reliability
What kind of Web site allows you to remotely collect network routing information back to
your actual location? - Answer-Looking glass site
List three interior gateway protocols (IGPs). - Answer-RIP, OSPF, IS-IS
Which protocol's header would a Layer 4 device read and process? - Answer-TCP
What number does a host use to identify the application involved in a transmission? -
Answer-Port number
What field in a TCP segment is used to determine if an arriving data unit exactly
matches the data unit sent by the source? - Answer-Checksum
At which OSI layer does IP operate? - Answer-Network layer
Which OSI layer is responsible for directing data from one LAN to another? - Answer-
Network layer
What kind of route is created when a network administrator configures a router to use a
specific path between nodes? - Answer-Static route
When a router can't determine a path to a message's destination, where does it send
the message? - Answer-Gateway of last resort
A routing protocol's reliability and priority are rated by what measurement? - Answer-AD
FUNDAMENTALS CHAPTER 3 EXAM
QUESTIONS AND ANSWERS
What four functions do all routers perform? - Answer-Connect dissimilar networks,
Interpret layers 3 & 4 addressing, Determine best path to route data, and Reroute data if
path is down
What database does a router consult before determining the most efficient path for
delivering a message? - Answer-Routing Table
Manually modifying a routing table can cause messages to get stuck hopping between a
limited number of routers. What is this problem called? - Answer-Routing Loop
Give three examples of routing metrics used by routers to determine the best of various
available routing paths. - Answer-Hop count, cost, reliability
What kind of Web site allows you to remotely collect network routing information back to
your actual location? - Answer-Looking glass site
List three interior gateway protocols (IGPs). - Answer-RIP, OSPF, IS-IS
Which protocol's header would a Layer 4 device read and process? - Answer-TCP
What number does a host use to identify the application involved in a transmission? -
Answer-Port number
What field in a TCP segment is used to determine if an arriving data unit exactly
matches the data unit sent by the source? - Answer-Checksum
At which OSI layer does IP operate? - Answer-Network layer
Which OSI layer is responsible for directing data from one LAN to another? - Answer-
Network layer
What kind of route is created when a network administrator configures a router to use a
specific path between nodes? - Answer-Static route
When a router can't determine a path to a message's destination, where does it send
the message? - Answer-Gateway of last resort
A routing protocol's reliability and priority are rated by what measurement? - Answer-AD
