WorksheetsNet+ Day 1 OSI Model Topologies and Cables
Total questions: 40
Worksheet time: 29mins
Name
Class
Date
1.
You are troubleshooting a network connectivity issue between two devices on the same floor. You suspect a physical layer problem. Which of the following cable types would be LEAST susceptible to electromagnetic interference (EMI)?
a)
Shielded Twisted-Pair (STP)
b)
Unshielded Twisted-Pair (UTP)
c)
Coaxial
d)
Fiber Optic
2.
A user on your network reports extremely slow data transfer speeds when connecting to a wireless printer. You investigate and discover the wireless network is operating on the 2.4 GHz band, which is heavily congested with other devices. Which layer of the OSI model is responsible for addressing this issue?
a)
Physical
b)
Data Link
c)
Network
d)
Physical
3.
Your company is designing a new office building and needs to decide on a network topology. They require a layout that is easy to expand and troubleshoot but may experience a single point of failure if a switch malfunctions. Which topology best meets these requirements?
a)
Bus
b)
Star
c)
Mesh
d)
Ring
4.
A technician needs to connect a new network device to the existing network. They identify the port on the switch as an RJ-45 jack. Which layer of the OSI model is responsible for the physical connection and data transmission across this port?
a)
Physical
b)
Data Link
c)
Network
d)
Transport
5.
You are configuring a new network switch. In which layer of the OSI model does the switch operate when it forwards data packets based on their MAC addresses?
a)
Physical
b)
Data Link
c)
Network
d)
Transport
6.
A user on your network complains that they cannot access certain websites while others load without issue. This situation most likely points to a problem at which layer of the OSI model?
a)
Application
b)
Presentation
c)
Session
d)
Transport
7.
You are troubleshooting a network connection issue. You ping a device and receive several "Request timed out" messages. Which layer of the OSI model is most likely the cause of this problem?
a)
Physical
b)
Data Link
c)
Network
d)
Transport
8.
While laying new network cables, a technician accidentally cuts a fiber optic cable. Which of the following tools would be MOST useful to repair the damage?
a)
Crimper
b)
Punch Down Tool
c)
Cable Tester
d)
Fusion Splicer
9.
You are designing a network for a small office with 20 workstations. Each department requires its own subnet to isolate traffic. Considering the need for future growth, which subnet mask would provide the most efficient use of IPv4 addresses while allowing for at least four subnets?
a)
/24
b)
/25
c)
/26
d)
/27
10.
You are configuring a new router. In which layer of the OSI model does the router operate when it forwards data packets based on their IP addresses?
a)
Physical
b)
Data Link
c)
Network
d)
Transport
11.
A technician needs to connect a laptop to a network switch. Which type of cable is most commonly used for this connection?
a)
Coaxial
b)
Fiber Optic
c)
Cat5e
d)
Cat3
12.
You suspect a faulty network adapter is causing connectivity issues on a user's computer. Which layer of the OSI model would be most impacted by this problem?
a)
Physical
b)
Data Link
c)
Network
d)
Transport
13.
A company wants to implement a wireless network with maximum security. Which wireless encryption standard offers the strongest protection?
a)
WEP
b)
WPA
c)
WPA2
d)
WPA3
14.
You are documenting the specifications of a network cable. Which characteristic of the cable determines the maximum transmission speed it can support?
a)
Cable color
b)
Gauge
c)
Jacket material
d)
Bandwidth
15.
A network administrator observes a significant increase in network traffic during peak business hours. Which TCP/IP protocol is most likely responsible for this surge in traffic?
a)
ICMP
b)
DNS
c)
HTTP
d)
FTP
16.
You are troubleshooting a slow internet connection. You discover a high number of errors on the DSL line. Which layer of the OSI model is most likely the cause of this problem?
a)
Physical
b)
Data Link
c)
Network
d)
Transport
17.
A technician needs to configure a new access point (AP) to extend the wireless network coverage. Which mode of operation allows the AP to wirelessly connect to the main network and provide internet access to devices?
a)
Client mode
b)
Access point mode
c)
Repeater mode
d)
Bridge mode
18.
You are configuring a new firewall. In which layer of the OSI model does a firewall typically operate to filter incoming and outgoing traffic?
a)
Physical
b)
Data Link
c)
Network
d)
Application
19.
A network administrator notices a significant drop in network performance after a recent software update on a network server. Which troubleshooting step would be MOST helpful in isolating the issue?
a)
Check the network cables for damage
b)
Reboot the affected server
c)
Update network drivers on client devices
d)
Verify switch configuration
20.
You are explaining the difference between TCP and UDP to a user. Which statement best describes a key difference between these protocols?
a)
TCP guarantees in-order delivery of data.
b)
UDP offers more reliable data transfer.
c)
TCP is connectionless while UDP is connection-oriented.
d)
UDP provides error correction mechanisms.
21.
The TCP/IP model is a seven-layer hierarchical model for network communication, while the OSI model is a five-layer model.
a)
True
b)
False
22.
A bus topology is generally considered the most scalable and easiest to troubleshoot network design.
a)
True
b)
False
23.
Coaxial cable is the most commonly used type of cable for modern Ethernet connections.
a)
True
b)
False
24.
A router operates at Layer 2 (Data Link Layer) of the OSI model, forwarding data packets based on MAC addresses.
a)
True
b)
False
25.
WPA2 encryption offers a more robust security standard compared to WEP for wireless networks.
a)
True
b)
False
26.
A crimp tool is used to punch down network cables into a patch panel.
a)
True
b)
False
27.
Unshielded Twisted-Pair (UTP) cabling is more susceptible to electromagnetic interference (EMI) compared to Shielded Twisted-Pair (STP) cabling.
a)
True
b)
False
28.
A subnet mask of /24 creates more usable IP addresses than a subnet mask of /23.
a)
True
b)
False
29.
A switch operates at Layer 4 (Transport Layer) of the OSI model, ensuring reliable data transfer between applications.
a)
True
b)
False
30.
Fiber optic cables offer greater bandwidth and immunity to EMI compared to copper cables like Cat6.
a)
True
b)
False
31.
Which of the following features are common to BOTH the OSI and TCP/IP models? (Choose 2)
a)
Application Layer
b)
Physical Layer
c)
Network Layer
d)
Data Link Layer
e)
Presentation Layer
32.
You are troubleshooting a network connection issue. Which of the following troubleshooting steps could be MOST helpful in isolating the problem? (Choose 3)
a)
Verify physical cable connections
b)
Reboot network devices
c)
Check for errors in device configurations
d)
Update network drivers
e)
Replace outdated equipment
33.
Which of the following are valid characteristics of a star network topology? (Choose 3)
a)
Uses a central switch
b)
Easy to troubleshoot and expand
c)
More susceptible to single point of failure if the switch malfunctions
d)
Limited scalability
e)
Prone to collisions due to multiple devices sharing a single cable
34.
Which of the following wireless security protocols offer encryption to protect your wireless network traffic? (Choose All That Apply)
a)
WEP
b)
WPA
c)
WPA2
d)
WPA3
e)
Open
35.
Which of the following cable types are suitable for Gigabit Ethernet connections? (Choose 2)
a)
Cat3
b)
Cat5
c)
Cat5e
d)
Cat6
e)
Fiber Optic
36.
When configuring a new network switch, which of the following functionalities can be enabled to improve network security? (Choose 3)
a)
Port security
b)
VLANs
c)
DHCP snooping
d)
Static ARP entries
e)
Link aggregation
37.
Which of the following statements accurately describe the functions of the OSI model layers? (Choose 2)
a)
The Transport Layer ensures reliable data delivery between applications.
b)
The Network Layer is responsible for error detection and addressing of frames.
c)
The Data Link Layer defines logical addressing and routing data packets across networks.
d)
The Physical Layer establishes a connection and guarantees in-order delivery of data.
e)
The Presentation Layer defines the electrical and physical specifications of network media.
38.
Which of the following is a disadvantage of a star network topology?
a)
If the central switch or server fails, the whole network is down
b)
Requires a high performance switch or server in the centre as all traffic passes through it.
c)
Extra hardware such as hubs and switches may be needed
d)
All three (3) answers are disadvantages.
39.
What is the main advantage of using a mesh topology?
a)
A) It is the most cost-effective topology.
b)
B) It provides high redundancy and reliability.
c)
C) It requires less maintenance.
d)
D) It uses the least amount of cabling.
40.
What is the main disadvantage of a bus topology?
a)
A) It requires a lot of cables.
b)
B) If the main cable fails, the entire network goes down.
c)
C) It is difficult to add new devices.
d)
D) It does not support high-speed networks.
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