WorksheetsNetwork Chapter 1 Review
Total questions: 20
Worksheet time: 10mins
Which of the following devices operate at the Data Link layer of the OSI model?
Switches
Bridges
Repeaters
Wireless Access Points
Routers
Which of the following functions does a SOHO router implement at layer 2 to make use of its Physical layer adapters?
DHCP server
Firewall
Ethernet switch
Network Address Translation (NAT)
Wireless access point
Which of the following interfaces does a SOHO router provide at the Physical Layer 1 of the OSI model?
Radio antennas for wireless signal transmission
HDMI ports for multimedia streaming
RJ-45 ports for a local cabled network
WAN port for Internet Service Provider (ISP) connection
USB ports for direct computer connection
Before escalating a troubleshooting problem, what should you be able to do?
Be able to communicate the basic facts clearly to the person to whom you are referring the incident.
Change system settings randomly in hopes of stumbling upon a solution.
Immediately escalate the problem without attempting any troubleshooting.
Establish the basic facts surrounding the problem.
Wait for the problem to resolve itself before taking any action.
When trying to identify the cause of a problem, which of the following are key questions to ask?
Should we switch to a different software platform?
What has changed since it was last working?
Is the system turned on?
Can the problem be solved by buying new hardware?
Did it ever work?
A multinational corporation has its main office in New York and branch offices in London, Tokyo, and Sydney. The corporation needs a network that can connect all these offices together, allowing for seamless communication and data transfer. Which type of network would be MOST suitable for this setup?
Wide Area Network (WAN)
Small Office/Home Office (SOHO) network
Small and Medium-sized Enterprise (SME) network
Local Area Network (LAN)
You manage a network that's connected using a physical star topology. One of the drop cables connecting a workstation has been removed. Which of the following BEST describes the effect that this will have on network communications?
No devices will be able to communicate.
All devices except the device connected with the drop cable will be able to communicate.
Only devices on one side of the missing cable will be able to communicate with each other, while only devices on the other side of the missing cable will be able to communicate with each other.
All devices will be able to communicate.
When referencing network topologies, what distinguishes half-duplex from full-duplex communication in a point-to-point link?
Half-duplex communication uses a single cable for data transmission, whereas full-duplex requires separate cables for each direction.
Full-duplex communication is limited to one direction at a time, similar to half-duplex, but it operates at higher speeds.
Half-duplex allows for data transmission in both directions, but not simultaneously; full-duplex permits simultaneous two-way data transmission.
Half-duplex communication can only occur in one direction, while full-duplex allows for data transmission in both directions but not at the same time.
A team of network consultants is configuring an Internet of Things (IoT) network. The team is considering network topologies in the context of the IoT devices being used, which are all within 100 meters of one another, are battery-powered, and communicate via the Zigbee protocol. Which of the following network topologies would BEST save power and scale easily to thousands of IoT sensor devices while saving power by cooperating with nearby devices?
Ring
Bus
Star
Mesh
Which of the following networking topologies connects each network device to a central forwarding appliance?
Star
Ring
Bus
Mesh
A growing company has recently moved into a new office space. The company has 50 employees, each with their own workstation. The office also has multiple printers, a centralized server, and requires structured cabling for connectivity. Which type of network would be MOST effective for this setup?
Small Office/Home Office (SOHO) network
Small and Medium-sized Enterprise (SME) network
Wide Area Network (WAN)
Data Center
A security engineer configures software-based port security on a hardware firewall. Which OSI model layer identifies the application ports to configure?
Physical Layer 1
Network Layer 3
Transport Layer 4
Data Link Layer 2
In the OSI model, what is the primary function of the Network layer?
The primary function of the Network layer is to ensure reliable transmission of data across a physical link.
The primary function of the Network layer is to encode and convert data into signals suitable for transmission over the physical medium.
The primary function of the Network layer is to establish, manage, and terminate connections between applications on different hosts.
The primary function of the Network layer is to move data around an internetwork using logical network and host IDs.
What is the role of an Access Control List (ACL) at Layer 3 (Network layer) of the OSI model?
To filter network traffic by permitting or blocking packets based on IP addresses and other criteria.
To serve as a list of permissions for file access on the network.
To act as a routing protocol for determining the best path for data packets.
To define the maximum size for packets transmitted across the network.
Which of the following BEST describes a demarcation point in the context of telecommunications?
The maximum data transfer rate achievable by the ISP.
The central hub where all ISPs connect and exchange data.
The protocol used for encrypting data over the Internet.
The point at which the telco's cabling enters the customer premises.
What is the MOST effective method for protecting the management interface of a SOHO router?
Enabling UPnP (Universal Plug and Play)
Disabling the firewall
Configuring a strong administrative account passphrase
Setting the router to automatically accept firmware updates
What is the recommended action when applying a solution that is disruptive to the wider network during troubleshooting?
Proceed with the solution without informing anyone to avoid causing panic.
Apply the solution immediately to minimize troubleshooting time.
Consider the most appropriate time to schedule the reconfiguration work and plan how to notify other network users.
Disconnect the network to ensure no one is using it before applying the solution.
What should you do when you discover symptoms of more than one problem while investigating a user's system issue?
Focus on the most complex problem first, assuming solving it will automatically resolve the others.
Treat each problem as a separate case, even if they seem related.
Advise the user to only report the most severe problem to avoid complicating the troubleshooting process.
Immediately escalate all discovered problems to a higher-level support team without further investigation.
A user is unable to print to a network printer. Which of the following is the first step that a technician should take to troubleshoot the issue?
Establish a theory of probable cause.
Establish a plan of action to resolve the problem.
Identify the problem.
Implement preventative measures.
A help desk operator is troubleshooting a site that is no longer responsive. Which of the following is the last step the operator should perform?
Document findings
Establish plan of action
Determine cause
Implement solution
