Font size
WorksheetsSemesterExamReview
Total questions: 55
Worksheet time: 30mins
You are a networking student, and you are explaining to a classmate the characteristics of a NIC. Which of the following are NIC characteristics?
NICs operates at the Data Link Layer
NICs is embedded with a physical address
NICs can be used to connect wired and wireless transmission media to a host
NICs can only be found in a PC
Zayne is experiencing issues with his laptop. He submits a help ticket to the IT department and describes the following problems: intermittent connectivity and slow network speeds. What is the IT technician most likely to troubleshoot on Zayne's laptop?
The monitor
The keyboard
The motherboard
The network interface card
Which of the following components are modular transceivers used to terminate multiple types of cable and connector types?
(MTP) Multi-fiber Termination Push on
(SFP) Small Form Factor Pluggable
Multi-mode cable
Single mode cable
Which of the following is a data link protocol used to manage the creation, modification and deletion of VLANs and the propagation the VLAN database?
(VTP) Virtual Trunking Protocol
Root Bridge
Designated Port
(STP) Spanning Tree Protocol
Match the following
This VLAN has all ports are assigned to it by default.
Default VLAN
This VLAN handles untagged traffic on trunk ports
Native VLAN
This VLAN prioritizes telecommunication network traffic for latency and high quality.
Voice VLAN
This VLAN manages network devices and services
Management VLAN
A switch will flood all the interface ports on a switch, if this MAC address is not in the forward/filter table. Note: First letter in answer should be capitalized.
(a)
A network administrator is configuring VLANs on a single switch with devices connected to VLAN 10, VLAN 20, and VLAN 30. What is the primary advantage of configuring VLANs?
Reduces the number of devices connected to the switch
Improves the speed of network traffic
Segment broadcast domains and improves security
Increases the number of available IP addresses
Two connected switches have been configured with VLAN 10 and VLAN 20. What’s the most efficient way to ensure communication between devices in the same VLAN on separate switches?
Use a direct cable connection for each VLAN
Use a router to connect the two switches
Use an 802.1Q trunk to connect the switches
Configure a separate network for each VLAN
A device is connected to VLAN 20 on Switch A, and the administrator wants it to communicate with a device on VLAN 20 on Switch B. What happens to the Ethernet frame when it reaches the trunk link?
The VLAN tag is added and sent across the trunk
The VLAN tag is removed and the frame is sent to VLAN 200 on Switch B
The frame is discarded
The frame is sent with no changes
A network administrator has multiple VLANs configured on a switch, but a specific device needs to bypass the VLAN tagging. Which VLAN would be used for this traffic?
Native VLAN
Trunk VLAN
Management VLAN
Default VLAN
A layer 3 switch is being used in a network with multiple VLANs. What feature does the layer 3 switch provide that a traditional layer 2 switch does not?
VLAN tagging
Routing between VLANs
Broadcast domain separation
IP address assignment
What is the purpose of the VLAN tag in an Ethernet frame when crossing a trunk link?
To prioritize the traffic
To indicate the source MAC address
To specify the VLAN from which the frame originates
To route the traffic between different switches
A network has high congestion affecting VoIP calls. How can the administrator ensure that VoIP traffic is not disrupted by data traffic?
Use a higher Ethernet frame size for VoIP
Disable VLAN trunking
Increase the bandwidth for all VLANs
Configure a dedicated VLAN for VoIP and assign it high priority
1. You are configuring an Ethernet connection between a computer and a switch. What is the most critical configuration you need to ensure on both devices?
Both devices should have the same IP address
Both devices should have the same speed and duplex settings
Both devices should use the same MTU size
Both devices should have the same MAC address
What is the primary function of the Maximum Transmission Unit (MTU) in network communication?
To increase the network security of the transmitted data
To allow devices to automatically configure speed settings
To define the maximum size of a packet that can be transmitted
To ensure data is encrypted during transmission
You want to configure a link between two switches to increase throughput using multiple physical interfaces. What technology should you use?
VLAN trunking
Link Aggregation
Jumbo Frames
Spanning Tree Protocol
If a switch is set to use a default VLAN and you connect an unconfigured device, which VLAN will the device belong to?
VLAN 10
VLAN 100
No VLAn
VLAN 1
What would be the impact of mismatched MTU sizes between devices connected over a network?
Data fragmentation may occur, reducing network efficiency
The connection will fail completely
Communication will be unaffected as MTU is not relevant
Data will be automatically encrypted to compensate for the difference
In an environment using voice over IP (VoIP) alongside data traffic, how can you avoid congestion and ensure voice quality?
Increase the MTU size for voice traffic
Use a separate network cable for voice traffic
Place voice traffic in its own VLAN and configure QoS for prioritization
Lower the Ethernet speed for voice traffic
What is the primary function of Spanning Tree Protocol (STP)?
To increase the IP address space on the network
To prevent network loops by blocking redundant paths
To encrypt the network traffic between switches
To ensure faster data transmission rates between devices
Which state does Spanning Tree use to prevent a port from forwarding traffic when a loop is detected?
Forwarding
Listening
Blocking
Learning
What type of port in Spanning Tree is responsible for forwarding traffic to the root bridge?
Designated Port
Root Port
Blocked Port
Listening Port
What does Spanning Tree Protocol do if a path to the root bridge is lost?
It keeps the blocked port in the blocking state
It automatically recalculates the best path and unblocks ports
It shuts down the entire network
It sends a message to the administrator
What is the main difference between the original Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP)?
RSTP requires more hardware resources
RSTP does not support blocking ports
STP supports more devices than RSTP
RSTP converges much faster, reducing downtime during topology changes
Which of the following best describes the role of a designated port in Spanning Tree Protocol?
The port that can forward traffic to the root bridge
The port that is blocked to prevent network loops
A port that can forward traffic but is not connected to the root bridge
The port on a switch that does not participate in forwarding traffic
In Rapid Spanning Tree Protocol (RSTP), what is the maximum time required for convergence after a network topology change?
30 to 50 seconds
6 seconds
30 seconds
1 minute
Your system has an open port that is associated with a service you no longer use. What should you do to secure your system?
Keep the port open to avoid disruption
Change the port number
Close the service and disable the port
Keep the port open but limit access using a firewall
. You want to ensure that no unauthorized devices can access your network through a specific port on a switch. What feature would you enable on the switch to accomplish this?
Port forwarding
Port security
MAC address filtering
VLAN segmentation
What is the primary purpose of creating VLANs in a network?
To increase the number of IP addresses available
To divide network traffic into different segments for security and management
To improve physical network connectivity
To manage Wi-Fi connections
After performing a VLAN configuration, you notice unauthorized devices are able to communicate across VLANs. What is the first thing you should check?
Ensure that VLAN tags are correctly applied to trunk links
Verify the router is properly configured for routing between VLANs
Ensure that all devices are assigned to the correct VLAN
Check the switch for physical layer issues
A switch receives a frame with a source MAC address that is not present in its MAC address table. What does the switch do?
It drops the frame
It forwards the frame to all other ports
It sends the frame to the router for processing
It adds the source MAC address to the MAC address table
If a switch's MAC address table is full and it receives a frame with an unknown destination MAC address, what is the switch's behavior?
It sends the frame to every port on the switch
It drops the frame
It sends the frame to the router
It attempts to learn the MAC address and forwards the frame
Which of the following is an example of a security risk related to MAC address tables in a switch?
Port security
MAC flooding
ARP poisoning
Spanning Tree Protocol loops
When a switch receives a frame with a destination MAC address that it has already learned, what does it do?
It broadcasts the frame to all ports
It drops the frame
It forwards the frame only to the port associated with that MAC address
It sends the frame to the router for further processing
An attacker exploits a default username and password to access a network device. What security measure should have been implemented to prevent this?
Port security
Enabling two-factor authentication
Changing default credentials
Disabling unused interfaces
Which method allows a network administrator to limit access to the network based on the physical device?
VPN
Port security
MAC address filtering
Firewall rules
A network administrator notices an interface on a switch showing an increasing number of CRC errors. What is the most likely cause?
A software configuration issue
A problem with the cable or interface
Network congestion
A misconfigured IP address
If a network interface is showing an increasing number of runts, what is the most likely cause?
The cable is too long
The frame size is too small
The network is experiencing congestion
The interface is misconfigured
What happens when a switch interface enters an "error-disabled" state?
The interface continues operating but with limited functionality
The interface is automatically reset after 5 minutes
The interface is disabled due to an issue like flapping or security violation
The interface is permanently disabled until replaced
What action does a switch typically take if an interface is constantly flapping (going up and down)?
It resets the device to fix the issue
It disables the interface to prevent network issues
It switches to a backup interface
It notifies the administrator but does nothing automatically
You are installing a camera on your network and want to power it using a single Ethernet cable. Which technology would you use?
PoE+
Wi-Fi
Power over Ethernet (PoE)
USB Power Delivery
. What could happen if a PoE device receives more power than it is rated for?
It will work at higher efficiency
The device could overheat or malfunction
It will automatically adjust to the correct power level
The device will disconnect from the network
How often do switches send Bridge Protocol Data Unit (BPDU) frames by default?
Every second
Every two seconds
Every five seconds
Every ten seconds
What is the basis for selecting the root bridge in STP?
Highest bridge ID
Lowest bridge ID
Highest MAC address
Lowest port number
If two switches have the same bridge ID, what is used to break the tie?
The number of VLANs
The highest priority
The lowest MAC address
The highest port number
Which spanning tree state prevents an interface from forwarding traffic but allows it to listen for BPDU frames?
Blocking
Listening
Learning
Forwarding
Which switch port type is associated with a single VLAN and connects directly to an end device?
Trunk port
Access port
Uplink port
Root port
What type of monitoring provides the most precise granularity for measuring network performance?
Packet capture tools
Latency calculators
Bandwidth meters
Throughput analyzers
What is the function of a switch’s MAC address table?
Maintain IP routing
Resolve domain names
Forward frames to appropriate ports
Perform STP calculations
What is the purpose of a trunk port in a VLAN?
To carry data for multiple VLANs
To isolate VLAN traffic
To route VLAN traffic
To manage default VLANs
Which spanning tree port role forwards traffic?
Designated port
Root Port
Alternate port
Blocking port
What is an unmanaged switch?
A switch with no configuration options
A switch that requires routing protocols
A switch for VLAN-specific traffic
A switch with DHCP capability
Which command displays a switch's current VLAN configuration?
show running-config
show vlan
show interface
show startup-config
A switch port is not forwarding traffic and shows "error-disabled." What is the likely cause?
Port security violation
VLAN mismatch
STP loop detected
Incorrect MTU settings
What protocol is used for VLAN tagging on Ethernet frames?
VTP
802.1Q
802.11ac
STP
