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Question 61

Which component is responsible for converting a computer’s digital video signal into a format suitable for a display?

1. Power supply
2. Network adapter
3. Graphics processing unit
4. Audio codec

Correct Answer: 3

Explanation

The Graphics Processing Unit (GPU) processes and renders visual information for display output. A dedicated graphics card may contain the GPU along with dedicated video memory, display connectors, and supporting circuitry. The GPU handles tasks such as rendering images, processing video, and accelerating graphics-intensive applications. A power supply provides electrical power, a network adapter manages network communication, and an audio codec handles audio conversion. Therefore, the GPU is the component most directly responsible for processing graphical information before it is sent to a display device.

Question 62

Which memory technology can detect and correct certain types of memory errors and is commonly associated with servers and workstations?

1. ECC
2. SDRAM
3. SRAM
4. VRAM

Correct Answer: 1

Explanation

Error-Correcting Code (ECC) memory is designed to detect and correct certain memory errors that may occur during operation. ECC is particularly valuable in servers, workstations, and other systems where data integrity and reliability are important. The motherboard, processor, and memory controller must support ECC for it to function as intended. SDRAM describes a broader category of synchronous memory, SRAM is commonly used for cache and other high-speed applications, and VRAM is specialized memory used by graphics hardware. ECC specifically addresses memory-error detection and correction.

Question 63

A user needs a device that can provide additional ports such as USB, Ethernet, and external displays through a single laptop connection. What should the technician recommend?

1. KVM switch
2. Docking station
3. Surge protector
4. Network tap

Correct Answer: 2

Explanation

A docking station expands the connectivity of a compatible laptop by providing additional interfaces through a single connection. Depending on the model, a docking station can provide USB ports, Ethernet, display outputs, audio connections, storage interfaces, and power delivery. This is especially useful for users who move between mobile and desktop-style work environments. A KVM switch is designed to control multiple computers using shared peripherals, while a surge protector handles electrical protection. A network tap monitors network traffic. Therefore, a docking station best meets the stated requirement.

Question 64

Which type of cable is commonly used to connect a computer to a standard Ethernet network?

1. Coaxial cable
2. Twisted-pair cable
3. Fiber-optic audio cable
4. HDMI cable

Correct Answer: 2

Explanation

Twisted-pair Ethernet cable is widely used for wired computer networking. Common categories include Cat 5e, Cat 6, and Cat 6a, with different specifications for speed, frequency, and maximum supported distances. The twisted conductors help reduce electromagnetic interference and crosstalk. Coaxial cable is used in some broadband and legacy networking applications, while HDMI is designed for digital audio and video. Fiber-optic cables use light to transmit data and are common in high-speed backbone and longer-distance network connections. For standard Ethernet connections, twisted-pair cabling is widely used.

Question 65

Which network device forwards traffic between different IP networks?

1. Switch
2. Access point
3. Router
4. Patch panel

Correct Answer: 3

Explanation

A router forwards packets between different IP networks and determines appropriate paths for network traffic. For example, a home router commonly connects a local area network to an internet service provider’s network. A switch primarily forwards Ethernet frames within a local network, while an access point provides wireless connectivity to a network. A patch panel is a passive cable-management device used to organize network connections. Routers can also perform additional functions such as network address translation, DHCP services, and firewalling depending on the device. Therefore, the router performs the described inter-network forwarding function.

Question 66

Which wireless security protocol provides stronger protection than the older WPA standard and is widely used on modern Wi-Fi networks?

1. WEP
2. WPA2
3. Open authentication
4. MAC filtering

Correct Answer: 2

Explanation

WPA2 provides significantly stronger wireless security than the older WEP and original WPA standards and has been widely deployed in modern Wi-Fi networks. WPA2 commonly uses AES-based encryption and can operate with personal authentication using a pre-shared key or enterprise authentication mechanisms. WEP is an outdated and insecure protocol, while an open network does not provide encryption by itself. MAC filtering can restrict device associations but is not a replacement for proper wireless encryption. WPA2 therefore represents a widely recognized stronger wireless security option.

Question 67

Which protocol is commonly used to automatically assign IP addresses to devices on a network?

1. DNS
2. HTTP
3. DHCP
4. SSH

Correct Answer: 3

Explanation

Dynamic Host Configuration Protocol (DHCP) automatically provides network configuration information to client devices. This commonly includes an IP address, subnet mask, default gateway, and DNS server information. DHCP reduces the need to manually configure every device and helps prevent duplicate address assignments within appropriately configured networks. DNS resolves hostnames to IP addresses, HTTP is used for web communication, and SSH provides secure remote command-line access. Therefore, DHCP is the protocol responsible for automatically assigning IP configuration information to network clients.

Question 68

A technician wants to determine whether a computer can reach another device across an IP network. Which command is commonly used for a basic connectivity test?

1. ping
2. format
3. chkdsk
4. tasklist

Correct Answer: 1

Explanation

The ping command is commonly used to test basic IP connectivity between a source computer and a destination device. It sends ICMP echo requests and waits for responses, allowing a technician to determine whether the destination is reachable and measure approximate response times. A successful ping does not prove that every application or network service is functioning correctly, but it provides useful initial information. Format prepares storage media, chkdsk checks file-system and disk-related conditions, and tasklist displays running processes. Therefore, ping is the appropriate basic connectivity-testing command.

Question 69

Which DNS record type maps a hostname to an IPv4 address?

1. MX
2. PTR
3. A
4. CNAME

Correct Answer: 3

Explanation

An A record maps a hostname to an IPv4 address in the Domain Name System. For example, a DNS server can use an A record to associate a web server’s hostname with its IPv4 address. An MX record identifies mail servers for a domain, a PTR record is commonly used for reverse DNS lookups, and a CNAME record creates an alias that points to another hostname. Understanding DNS record types is useful when troubleshooting name-resolution and network-access problems. Therefore, the A record provides the IPv4 hostname mapping described.

Question 70

Which protocol is commonly used to securely transfer files over an encrypted SSH connection?

1. FTP
2. TFTP
3. SFTP
4. SMTP

Correct Answer: 3

Explanation

Secure File Transfer Protocol (SFTP) provides file transfer functionality through the SSH protocol, which encrypts the communication between the client and server. This helps protect credentials and transferred data from interception on untrusted networks. Traditional FTP does not inherently encrypt traffic, while TFTP is a lightweight transfer protocol that does not provide comparable built-in security. SMTP is used for sending email rather than transferring files through an SSH-based session. Therefore, SFTP is the appropriate choice when secure file transfers through an SSH connection are required.

Question 71

Which Windows feature allows a technician to view and manage hardware devices and their associated drivers?

1. Device Manager
2. Disk Cleanup
3. Task Scheduler
4. Event Viewer

Correct Answer: 1

Explanation

Device Manager provides a centralized Windows interface for viewing installed hardware and managing device drivers. Technicians can use it to identify hardware, inspect device properties, update or roll back drivers, disable devices, and investigate certain hardware-related errors. Disk Cleanup focuses on removing unnecessary files, Task Scheduler manages scheduled tasks, and Event Viewer displays system and application logs. When troubleshooting a hardware device that is not functioning correctly, Device Manager is often an important diagnostic resource for identifying driver or device-status problems.

Question 72

Which Windows utility is commonly used to inspect system and application event logs?

1. Resource Monitor
2. Event Viewer
3. Disk Management
4. Services

Correct Answer: 2

Explanation

Event Viewer allows technicians to review Windows logs generated by the operating system, applications, security components, and other services. These logs can provide valuable information about crashes, warnings, authentication events, service failures, and other system conditions. Resource Monitor focuses on resource usage, Disk Management manages storage volumes and partitions, and the Services console manages background services. When investigating an intermittent problem or a failure that is difficult to reproduce, reviewing relevant Event Viewer entries can help identify patterns and provide additional troubleshooting information.

Question 73

Which Windows command displays the current IP configuration of a computer?

1. ipconfig
2. tracert
3. netstat
4. nslookup

Correct Answer: 1

Explanation

The ipconfig command displays IP configuration information on Windows systems. Depending on the options used, it can show IPv4 and IPv6 addresses, subnet masks, default gateways, and DNS-related information. It can also be used to release and renew DHCP-assigned addresses. Tracert examines the path packets take toward a destination, netstat displays network connections and related information, and nslookup queries DNS information. Therefore, ipconfig is the appropriate command when a technician needs to inspect the computer’s current IP configuration.

Question 74

Which Windows feature allows a technician to roll back certain system changes by restoring system files and settings to an earlier state?

1. Disk Defragmenter
2. System Restore
3. BitLocker
4. Print Management

Correct Answer: 2

Explanation

System Restore allows Windows to restore certain system files, drivers, registry settings, and configuration information to an earlier restore point. It can be useful when a system becomes unstable after a driver installation, software change, or configuration modification. System Restore does not function as a complete backup of personal files and should not be considered a replacement for regular data backups. Disk Defragmenter addresses storage organization, BitLocker provides drive encryption, and Print Management manages printers. Therefore, System Restore is the appropriate recovery feature for the described situation.

Question 75

Which command can be used to trace the network path taken by packets toward a destination on Windows?

1. ping
2. tracert
3. hostname
4. gpupdate

Correct Answer: 2

Explanation

The Windows tracert command traces the route packets take toward a specified destination by identifying intermediate network hops. It is useful when diagnosing routing problems, excessive latency, or connectivity failures that occur somewhere between the source and destination. Ping can test basic reachability but does not normally display the complete path. Hostname displays the local computer’s hostname, while gpupdate refreshes Group Policy settings. A technician can use tracert to identify where along a network path traffic may be experiencing delays or failures.

Question 76

Which technology encrypts an entire Windows storage volume to help protect data if the drive is removed from the computer?

1. BitLocker
2. NTFS compression
3. Disk Cleanup
4. Windows Defender Firewall

Correct Answer: 1

Explanation

BitLocker provides volume-level encryption for supported Windows systems and helps protect stored data from unauthorized access. If an encrypted drive is removed from a computer and accessed without the appropriate authentication or recovery information, the data remains protected by encryption. NTFS compression reduces storage usage but does not provide confidentiality. Disk Cleanup removes unnecessary files, while Windows Defender Firewall controls network traffic. Full-volume encryption is particularly important for laptops and portable systems because physical theft of the device does not automatically expose the stored data.

Question 77

Which network service translates a domain name such as example.com into an IP address?

1. DHCP
2. DNS
3. SMB
4. RDP

Correct Answer: 2

Explanation

The Domain Name System (DNS) translates human-readable domain names and hostnames into IP addresses that computers can use for network communication. This allows users to access services using memorable names rather than manually entering numerical addresses. DHCP assigns IP configuration information, SMB provides file and printer-sharing capabilities, and RDP provides remote desktop access. DNS is therefore fundamental to normal network communication because applications frequently depend on successful name resolution before establishing connections with remote services.

Question 78

A technician needs to access a Windows computer remotely and interact with its graphical desktop. Which protocol or service is appropriate?

1. RDP
2. SMTP
3. SNMP
4. NTP

Correct Answer: 1

Explanation

Remote Desktop Protocol (RDP) allows authorized users and administrators to remotely interact with a Windows graphical desktop. It can be used for technical support, administration, and remote work when appropriately configured and secured. SMTP is used for email transmission, SNMP is commonly used for network monitoring and management, and NTP synchronizes system clocks. Remote desktop access should be protected through appropriate authentication, access controls, encryption, and network security measures. RDP is therefore the service that directly provides remote graphical desktop access.

Question 79

Which backup type copies all selected data every time the backup is performed?

1. Differential
2. Incremental
3. Full
4. Snapshot-only

Correct Answer: 3

Explanation

A full backup copies all selected data during each backup operation. Because it contains a complete copy of the selected data set, restoring from a full backup is generally straightforward because the restoration does not require combining multiple incremental backup sets. The tradeoff is that full backups usually require more storage space and may take longer to complete. Incremental backups contain data changed since the most recent relevant backup, while differential backups contain changes since the last full backup. Therefore, the described backup method is a full backup.

Question 80

Which backup method stores changes made since the most recent full backup?

1. Differential
2. Incremental
3. Full
4. Clone

Correct Answer: 1

Explanation

A differential backup stores data that has changed since the most recent full backup. Each subsequent differential backup generally becomes larger as additional changes accumulate until another full backup is performed. During restoration, the most recent full backup and the latest differential backup are typically required. Incremental backups instead contain changes since the most recent backup of any type, which can reduce backup size but may require multiple backup sets during restoration. Therefore, a backup containing all changes since the last full backup is classified as differential.