DCOM 101 Final Exam Review Questions
With Complete Solutions
/On which layer of the OSI model is the fiber optic cabling located - Answer-1
/.On which layer of the OSI model is IP located - Answer-3
/.On which layer of the OSI model is TCP located - Answer-4
/.On which layerof the OSI model is HTTP located - Answer-7
/.On which layer of the OSI model is CSMA/CD located - Answer-2
/.On which layer of the OSI model is a router located - Answer-3
/.On which layer of the SOI model is a passive hub located - Answer-1
/.If you can ping a server, but cannot login to the server, what layers are properly
functioning - Answer-a & b
/.If you can ping a server, but cannot login to the server, on which layer does the
problem most likely lie? - Answer-5
/.Why do we have standards? - Answer-to insure compatibility
/.What standard applies to ethernet - Answer-IEEE 802.3
/.What standard applies to Wi-Fi - Answer-IEEE 802.11
/.Which of the following are application layer protocols - Answer-c&d
/.if you are manufacturing ethernet cards, why should you follow the IEEE standard -
Answer-so your ethernet cards will work with other manufacturers ethernet cards
/.To prevent a wardriver from being able to interpret captured wireless network data,
you should enable which of the following? - Answer-MAC filtering
/.What is the purpose of a switch? - Answer-to connect PC's to PC's to create a LAN
/.Which of the following are true regarding a hub? - Answer-a & b above
, /.Which of the following are true regarding a switch? - Answer-data frames coming into
one port will only be forwarded to the port that is connected to the computer for which
that data frame is destined
/.What is the purpose of a switching table? - Answer-to allow the switch to send a data
frame to the correct port
/.What is contained in the switching table - Answer-MAC address
/.At what layer in the OSI model does a router operate? - Answer-3
/.Which is the fasted method of frame forwarding in a switch? - Answer-cut thru
/.Why should you have redundant switches? - Answer-fault tolerance
/.What is the pupose of the STP (spanning tree protocol)? - Answer-to prevent data
frames from endlessly looping
/.What is the purpose of a VLAN - Answer-to logically separate computers which are
connected to the same physical switch
/.Why would you create a VLAN? - Answer-to limit broadcast traffic
/.Which protcol is responsible for VLAN tagging? - Answer-IEEE 802.1Q
/.What is the purpose of a router? - Answer-a & b
/.What does a router read in an IP packet header to determire where to send the
packet? - Answer-network ID in the IP header
/.What is the purpose of a routing table? - Answer-to show which network interface card
leads to which network
/.What informatin is stored in a routing table? - Answer-all the above
/.How can a routing table be updated? - Answer-a & b only
/.Which of the following are routing protocols? - Answer-all the above
/.What is the purpose of an ACL (access control list) in the context of routing? - Answer-
to block or allow traffic based on IP address
/.Which of the following are categories of security? - Answer-all the above
/.Methods of tightening authentication security include which of the following? - Answer-
a&b
With Complete Solutions
/On which layer of the OSI model is the fiber optic cabling located - Answer-1
/.On which layer of the OSI model is IP located - Answer-3
/.On which layer of the OSI model is TCP located - Answer-4
/.On which layerof the OSI model is HTTP located - Answer-7
/.On which layer of the OSI model is CSMA/CD located - Answer-2
/.On which layer of the OSI model is a router located - Answer-3
/.On which layer of the SOI model is a passive hub located - Answer-1
/.If you can ping a server, but cannot login to the server, what layers are properly
functioning - Answer-a & b
/.If you can ping a server, but cannot login to the server, on which layer does the
problem most likely lie? - Answer-5
/.Why do we have standards? - Answer-to insure compatibility
/.What standard applies to ethernet - Answer-IEEE 802.3
/.What standard applies to Wi-Fi - Answer-IEEE 802.11
/.Which of the following are application layer protocols - Answer-c&d
/.if you are manufacturing ethernet cards, why should you follow the IEEE standard -
Answer-so your ethernet cards will work with other manufacturers ethernet cards
/.To prevent a wardriver from being able to interpret captured wireless network data,
you should enable which of the following? - Answer-MAC filtering
/.What is the purpose of a switch? - Answer-to connect PC's to PC's to create a LAN
/.Which of the following are true regarding a hub? - Answer-a & b above
, /.Which of the following are true regarding a switch? - Answer-data frames coming into
one port will only be forwarded to the port that is connected to the computer for which
that data frame is destined
/.What is the purpose of a switching table? - Answer-to allow the switch to send a data
frame to the correct port
/.What is contained in the switching table - Answer-MAC address
/.At what layer in the OSI model does a router operate? - Answer-3
/.Which is the fasted method of frame forwarding in a switch? - Answer-cut thru
/.Why should you have redundant switches? - Answer-fault tolerance
/.What is the pupose of the STP (spanning tree protocol)? - Answer-to prevent data
frames from endlessly looping
/.What is the purpose of a VLAN - Answer-to logically separate computers which are
connected to the same physical switch
/.Why would you create a VLAN? - Answer-to limit broadcast traffic
/.Which protcol is responsible for VLAN tagging? - Answer-IEEE 802.1Q
/.What is the purpose of a router? - Answer-a & b
/.What does a router read in an IP packet header to determire where to send the
packet? - Answer-network ID in the IP header
/.What is the purpose of a routing table? - Answer-to show which network interface card
leads to which network
/.What informatin is stored in a routing table? - Answer-all the above
/.How can a routing table be updated? - Answer-a & b only
/.Which of the following are routing protocols? - Answer-all the above
/.What is the purpose of an ACL (access control list) in the context of routing? - Answer-
to block or allow traffic based on IP address
/.Which of the following are categories of security? - Answer-all the above
/.Methods of tightening authentication security include which of the following? - Answer-
a&b
