ISMN 5040 Final Practice Exam with
complete solutions 2024/2025
Which of the following is not a purpose for using hubs in a network?
a. to act as a communications server
b. to connect network cables
c. to prevent attenuation
d. to act as a junction box
e. none of the above - ANSWER-a
Hubs:
a. usually incorporate repeaters or amplifiers
b. have connection points called handles
c. limit the distance of a network to a few meters in length
d. are a difficult method to connect network cables
e. operate at the application layer - ANSWER-a
__________ is not true with respect to network hubs.
a. Each port in a hub has a unique number.
b. A good network plan includes hubs in areas, such as a telecommunications
wiring closet, in which a network may expand
c. Simple hubs are commonly available in 4-, 8-, 16-, and 24-port sizes
d. Many hubs act as repeaters or amplifiers
e. Hubs provide a complicated way to connect network cables - ANSWER-e
Switch-based Ethernet:
a. uses a hub to connect computers
b. has a physical topology of a ring
c. has a logical topology of a ring
d. has a logical topology of a bus
,e. usually enables all attached circuits to send or receive packets simultaneously
- ANSWER-e
Switched Ethernet:
a. always has a lower capacity than shared Ethernet.
b. operates at 50% of capacity before performance becomes a problem.
c. operates at about 95% of capacity before performance becomes a problem.
d. is affected by the increased collisions caused by using a switched LAN design.
e. decreases network performance because each computer is connected via a
common multi point circuit.
c. operates at about 95% of capacity before performance becomes a problem. -
ANSWER-c
A switch uses a _____________ that is very similar to a routing table used in a
router.
a. cable plan
b. forwarding table
c. network server
d. reversing table
e. switching mullion - ANSWER-b
Which of the following is not true about layer-2 switched Ethernet?
a. A switch replaces the hub.
b. The physical topology is the same as the physical topology of shared Ethernet:
a ring.
c. The logical topology is a star.
d. The switch uses a forwarding table to route the packet to the correct
circuit/computer.
e. The switch chooses which packet to transmit first if it receives more than one
packet destined for the same computer at the same time, and stores the other
packet(s) temporarily. - ANSWER-b
Which of the following is not true about Layer-3 switches?
a. They switch messages based on their IP address.
b. They can be used in place of routers.
c. They function faster than routers.
d. They have more simultaneously active ports than routers.
e. They can only switch messages based on their data link layer addresses. -
ANSWER-e
Which of the following is not true about switched Ethernet?
, a. The switch has a physical bus topology.
b. It uses a switch instead of a hub.
c. It has faster connections (almost immediate) than traditional Ethernet.
d. It essentially provides a point-to-point connection between computers.
e. It has forwarding tables in which entries are learned over time. - ANSWER-a
Which of the following is a mode in which a switch operates:
a. fast learning switching
b. routing switching
c. fragment-free switching
d. store switching
e. cut switching - ANSWER-c
Each of the circuits connected to a switch is a separate _______________ circuit
connecting the switch to a device on the network.
a. multipoint
b. point-to-point
c. shared
d. ring
e. star - ANSWER-b
A(n) _____________ is used in a computer to connect it to a WLAN.
a. Ethernet NIC
b. antennae
c. wireless NIC
d. access point
e. hub - ANSWER-c
A(n) ___________ is a radio transceiver that plays the same role as a hub or
switch in a wired network and connects the WLAN to the wired network.
a. Ethernet NIC
b. antennae
c. wireless NIC
d. access point
e. hub - ANSWER-d
Another name for distributed coordination function (DCF) is __________.
a. distributed carrier sense method
b. physical carrier sense method
c. physical carrier sense mode
d. distributed carrier sense mode
complete solutions 2024/2025
Which of the following is not a purpose for using hubs in a network?
a. to act as a communications server
b. to connect network cables
c. to prevent attenuation
d. to act as a junction box
e. none of the above - ANSWER-a
Hubs:
a. usually incorporate repeaters or amplifiers
b. have connection points called handles
c. limit the distance of a network to a few meters in length
d. are a difficult method to connect network cables
e. operate at the application layer - ANSWER-a
__________ is not true with respect to network hubs.
a. Each port in a hub has a unique number.
b. A good network plan includes hubs in areas, such as a telecommunications
wiring closet, in which a network may expand
c. Simple hubs are commonly available in 4-, 8-, 16-, and 24-port sizes
d. Many hubs act as repeaters or amplifiers
e. Hubs provide a complicated way to connect network cables - ANSWER-e
Switch-based Ethernet:
a. uses a hub to connect computers
b. has a physical topology of a ring
c. has a logical topology of a ring
d. has a logical topology of a bus
,e. usually enables all attached circuits to send or receive packets simultaneously
- ANSWER-e
Switched Ethernet:
a. always has a lower capacity than shared Ethernet.
b. operates at 50% of capacity before performance becomes a problem.
c. operates at about 95% of capacity before performance becomes a problem.
d. is affected by the increased collisions caused by using a switched LAN design.
e. decreases network performance because each computer is connected via a
common multi point circuit.
c. operates at about 95% of capacity before performance becomes a problem. -
ANSWER-c
A switch uses a _____________ that is very similar to a routing table used in a
router.
a. cable plan
b. forwarding table
c. network server
d. reversing table
e. switching mullion - ANSWER-b
Which of the following is not true about layer-2 switched Ethernet?
a. A switch replaces the hub.
b. The physical topology is the same as the physical topology of shared Ethernet:
a ring.
c. The logical topology is a star.
d. The switch uses a forwarding table to route the packet to the correct
circuit/computer.
e. The switch chooses which packet to transmit first if it receives more than one
packet destined for the same computer at the same time, and stores the other
packet(s) temporarily. - ANSWER-b
Which of the following is not true about Layer-3 switches?
a. They switch messages based on their IP address.
b. They can be used in place of routers.
c. They function faster than routers.
d. They have more simultaneously active ports than routers.
e. They can only switch messages based on their data link layer addresses. -
ANSWER-e
Which of the following is not true about switched Ethernet?
, a. The switch has a physical bus topology.
b. It uses a switch instead of a hub.
c. It has faster connections (almost immediate) than traditional Ethernet.
d. It essentially provides a point-to-point connection between computers.
e. It has forwarding tables in which entries are learned over time. - ANSWER-a
Which of the following is a mode in which a switch operates:
a. fast learning switching
b. routing switching
c. fragment-free switching
d. store switching
e. cut switching - ANSWER-c
Each of the circuits connected to a switch is a separate _______________ circuit
connecting the switch to a device on the network.
a. multipoint
b. point-to-point
c. shared
d. ring
e. star - ANSWER-b
A(n) _____________ is used in a computer to connect it to a WLAN.
a. Ethernet NIC
b. antennae
c. wireless NIC
d. access point
e. hub - ANSWER-c
A(n) ___________ is a radio transceiver that plays the same role as a hub or
switch in a wired network and connects the WLAN to the wired network.
a. Ethernet NIC
b. antennae
c. wireless NIC
d. access point
e. hub - ANSWER-d
Another name for distributed coordination function (DCF) is __________.
a. distributed carrier sense method
b. physical carrier sense method
c. physical carrier sense mode
d. distributed carrier sense mode
