Network Systems Exam 1 Practice Test

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• Which IPv6 address identifies multiple destinations, with packets delivered to the closest destination?
• Which switch will they use with ipconfig to check the status of all network adapters?
• A laptop experiences random crashes and BSODs during travel but works fine at the office. After re-seating memory modules, what is a good method to test if the problem recurs?
• A desktop computer restarts unexpectedly after a slight electrical shock while it is on. What is the most likely cause?
• What happens when a device is not forward compatible with newer APs?
• What is the term used to describe what happens when speed and duplex settings are not supported by a neighboring device and result in a slow or failed transmission?
• Which OSI layer adds control information at the beginning of the payload and includes TCP segments and UDP datagrams?
• What is a primary advantage of using single-mode fiber over multi-mode for long-distance links?
• Which protocol provides monitoring and alerting for network health without relying on third-party software?
• Why is it important to rotate cryptographic keys?
• If a power outage would cause all racks to lose power because there are no UPS units, this is an example of what?
• What should Mark do if someone asks him to hold the door behind him in a restricted area?
• A Layer 3 network diagram typically includes which items?
• If a campus has 12 intermediate distribution frames (IDFs), how many main distribution frames (MDFs) does this arrangement typically imply?
• Which statement about voice gateway protocols is accurate?
• During a network audit, a MAC address change was observed. What is a likely explanation?
• In a building network, what is the term for the high-capacity fiber connection interlinking multiple switches?
• Authentication is a process of ensuring that an entity is who they say they are.
• Which Wi-Fi security protocol is commonly used for home networks?
• Which method, described for servicing many servers across multiple racks, allows control from a single console?
• Which statement describes a component of the enterprise onboarding process?
• What is the definition of a network?
• In configuration management, a system functioning in production is in its baseline configuration. Which option correctly identifies the baseline position?
• As a wireless signal moves away from the transmission source, it becomes weaker. What is this phenomenon called?
• Inventory management is the process of monitoring and maintaining all assets that make up a network.
• Which symbol represents a firewall in network diagrams?
• What is the purpose of the Entrance Facility (EF) in telecommunications terms?
• Which DNS record type is used to hold alternative host names such as blog.example.com or shop.example.com?
• A CVE score of 9.0 indicates what action should be taken?
• Which floors reported data errors according to the scenario?
• Which statement best describes the primary function of DNS?
• A technician forgot to bring an ESD wrist strap. How can they ground themselves to avoid damage while working on a computer?
• How can Landers prevent the printer IP address from changing and becoming unreachable?
• Which network issue occurs when a device cannot sense another device's transmission, leading to collisions?
• DoT uses which port by default?
• What protocol enables inter-network communication across multiple LAN segments and networks via routers?
• A workstation boots with an error indicating the IP address is already in use. What is a likely cause?
• Which OSI layer is responsible for physical addressing using MAC addresses?
• Which statement about impedance is correct?
• In networking, bandwidth can refer to multiple concepts. Which statement is accurate?
• DNS over TLS uses which protocol to secure DNS resolution?
• What is the recommended fix for the issues on floors 30 and 41?
• Which device should be used to enable communication between two discrete networks located on different floors?
• What type of crosstalk occurs between two cables?
• Which command provides Windows-style help for TCP/IP configuration?
• Which OSI model layer is responsible for reformatting, compressing, and encrypting data so the receiving application can read it?
• With a switch port issue and a change management policy in place, what troubleshooting step is most appropriate to minimize disruption?
• What is fragmentation and why does it happen?
• Which statement about the Transport layer is true?
• Why is MTBF important for budgeting and maintenance planning?
• What is the main reason a client would refuse Telnet access for remote control?
• Which term describes the process of designing, implementing, and maintaining a broad set of IT systems, including hardware, software, and processes?
• Which statement best describes authentication?
• When measuring voltage on a suspected damaged cable, which tool is appropriate?
• Which topology is defined by devices being fully interconnected so each device has direct links to every other device?
• Which statement best describes why plenum cabling is used in air-handling spaces?
• What statement correctly differentiates a hub and a switch?
• What term describes the network path that connects two LANs located in different buildings via an Internet Service Provider?
• Which option is NOT a factor influencing the effective wireless range?
• A computer cannot connect to the Internet even though IP address and subnet mask are correct. What could be the issue?
• Which OSI layer is responsible for routing and delivering packets from source to destination across networks?
• What is the primary purpose of a Master Service Agreement (MSA) in business documents exchanged between two parties?
• Which statement best describes a Service Level Agreement (SLA)?
• In a LAN, which address type is used to identify devices at the network layer?
• Which items are commonly included in a yearly network inventory documentation?
• What does PAT stand for?
• Which statement about SSIDs is true?
• Danika wonders about the mechanism that authenticates her identity when logging in from a new device. What is this a function of?
• Which port range is from 1024 to 49151 and can be used temporarily by processes for nonstandard assignments to increase security?
• In a capture, 192.168.1.10:8080 indicates...
• What is the numeric range of the wireless spectrum as defined?
• Which action provides quick confirmation of a hardware fault without altering software?
• What action is recommended to reduce unauthorized access from outside by radio placement?
• In troubleshooting, what is the very first question you should ask to identify the problem?
• Which OSI layer is associated with MAC addresses such as EUI-48 and EUI-64, and is where switches operate?
• Which mapping does an ARP table store?
• What does IDF stand for in distribution frame terminology?
• Digital certificates are typically used to secure communications with which type of entity?
• Which of the following describes the role of a POP3 server when retrieving mail?
• Which statement explains why Auto Updates may be undesirable in some circumstances?
• During onboarding, what action does the agent perform on the device?
• Which service enables sign-on from any computer and centralized access to resources in a Windows domain?
• IPv6 is not the protocol used most for communications over the Internet.
• What is the transmission flaw defined as the loss of a signal's strength as it travels away from its source?
• What information does the CNAME record hold in a DNS resource record?
• Which tool is used to trace the path of cables and identify which wall outlet is connected to which port?
• Debbie is trying to log in to her router; SSID is correct but login fails. What is the likely problem?
• During the data transfer step in IPSec, which type of payload provides encryption to protect the data?
• What is IT's role in offboarding employees?
• What is the purpose of the Link Layer Discovery Protocol (LLDP)?
• What is the primary purpose of a patch bay?
• What action should Allan take for the 10 laptops that encountered issues with a firmware update?
• True or false: A single fiber strand can support full-duplex communication.
• In the donation portal scenario, what did the IT team discover as the cause of the error?
• Which layer uses logical addressing to enable routing across multiple networks?
• Which statement about IMAP4 compared with POP3 is true?
• What type of cable is used when running cable between floors in a multi-story building?
• In IPSec, which transmission mode is most appropriate for securing communications between two networks across a distance?
• In Windows Server 2022, a DNS deployment that serves both internal and external clients from a single DNS server is commonly called what?
• In air-handling plenum spaces, which type of cable is specified to minimize smoke production?
• Which protocol is used to transmit email from a client to a mail server?
• Why does typing 'Ip address show' on a Linux system often yield 'Ip: command not found'?
• In which OSI layer is UDP categorized?
• Which OSI layer is referred to as the 'Layer We See' and includes services like Gmail, Twitter, and Facebook?
• When the wave encounters an obstacle and reflects, or bounces back, toward its source, a wireless signal will bounce off objects whose surface dimensions are large compared with the signal's average wavelength. What is this phenomena called?
• Mean Time Between Failures (MTBF) is used to assess reliability. Which statement is most accurate?
• Which latency component is associated with processing delays at devices?
• What is established when a host receives a request to communicate on a port?
• In onboarding, which access is commonly controlled by device permission levels?
• On which floor is the server room located in the building described?
• Which statement defines a Memorandum of Understanding (MOU)?
• Which statement correctly contrasts physical topology and logical topology?
• What term describes the practice of driving around to locate open wireless networks?
• Which TCP header field is used to manage end-to-end flow control during transmission?
• Which statement correctly describes the relationship between AH and ESP in IPsec?
• In terms of security, data exists generally in three states. In what state is data being moved?
• Which fiber type has a core diameter of about 8 to 10 microns and supports the highest bandwidths and longest distances without repeaters?
• After symptoms pointed to a failing power supply, a technician replaced it and used CMOS utilities to test. What troubleshooting step was performed?
• A -3 dB change indicates the power has changed by what factor?
• Which of the following is a primary advantage of a client-server architecture over a peer-to-peer network?
• Which statement best describes the role of the default gateway in a local network?
• Which utility is used by default to perform a DNS lookup in Ubuntu?
• What is a fundamental practice to prevent static electricity damage when handling computer components?
• Which floor was the Wi‑Fi signal observed to drop to almost zero?
• Is the statement 'TCP/IP is the common application layer protocol used by voice gateways to initiate and maintain connections' true or false?
• Which security threat involves exploiting the WPS feature via brute-force PIN attempts?
• Which OSI layer sits directly above the Transport layer and handles dialog control and reliable session management?
• Which statement correctly describes the kilo prefixes for throughput and storage?
• Which statement best describes the benefit of using Active Directory Domain Services in a client-server network?
• EOS stands for what in software lifecycle terminology?
• Which transport protocol is commonly used for low-latency live video streaming?
• Which utility should you use to look up the port a TCP/IP service runs on?
• What is the most common way to measure latency on a data network?
• What is the main goal of configuration management?
• To avoid jitter after using leftover connectors, what should Billie have done?
• Which impedance rating is better for computer networks?
• Why is it important to understand the difference between bits and bytes when describing data quantities versus throughput?
• Which statement reflects a BYOD onboarding policy regarding monitoring?
• What is the primary function of a MAC address table on a switch?
• A user cannot access the Internet even though DNS is correct and the workstation has a static IP. What is the likely cause?
• AH in IPSec stands for and provides what?
• Why do collisions reduce network performance?
• Which physical medium is commonly used for backbone connections between switches in the described network?
• What is the term for the geographic area that can be covered by an antenna or wireless system?
• What is the purpose of ping localhost?
• How did Jacqulyn detect the HVAC issue without any notification?
• Which capability allows an administrator to control what files a user can open, read, or edit in a client-server network?
• Which OSI layer handles IP addresses for routing?
• Which of the following is a potential cause of a wireless segment not connecting to the wired network when the SSID is the same?
• Which wireless technology transmits short bursts of data on a particular frequency within the band and then moves to the next frequency in the sequence?
• Which Windows command can be used to test reachability of a host and measure latency?
• Which of the following is a primary advantage of a peer-to-peer network for Connie's restaurant?
• Which statement best describes UDP's reliability characteristics?
• Which statement about EMI in fiber-optic cabling is most accurate?
• ESP in IPSec is used to provide what protection?
• In a standard inter-office connection without encryption between San Francisco and New York offices, which description best fits the connection?
• Which OSI layer is responsible for encoding and encryption of information (such as SSL/TLS)?
• Which DNS server is contacted by clients, both local and over the Internet, to resolve DNS queries for the organization's domains?
• Which set of protocols forms the foundational suite for Internet communications?
• Which OSI layer is primarily responsible for end-to-end communication control, including reliable data transfer where needed?
• Which IPv6 address delivers packets to all nodes in a targeted multicast group?
• Which OSI layer deals with frames and translation from hardware to data, and where switches operate?
• What does EMI stand for in the context of wireless networks?
• Where can a patch bay typically be mounted?
• Gas suppression systems are located at which level within a building?
• What is the overall purpose of IPsec during data transfer?
• In which order were the following Wi-Fi standards released from earliest to latest?
• IPSec is an enhancement to IPv6.
• Which OSI layer is most closely associated with end-user services and software applications?
• Which statement best describes switch behavior in a LAN?
• Which protocol is a core protocol in the TCP/IP suite?
• Which browser error indicates the SSL certificate is expired or invalid, as seen in the donations scenario?
• An MSA (Master Service Agreement) is a contract that defines the terms of present contracts between parties, such as payment terms or arbitration arrangements. True or False?
• To see an abbreviated summary of configuration information, what tool is used?
• Which of the following are examples of NIC communication protocols at the data link layer?
• What type of connector is most often used with RG-6 cables?
• Which device serves as the gateway for traffic destined for networks outside the local LAN?
• Martin's company wants a vendor to supply a high-end printing press with sensors and specific noise requirements. Which document is typically sent to vendors to collect proposals?
• Why would someone choose a layer 7 firewall over a layer 4 firewall?
• What type of analyzer can evaluate Wi-Fi network availability as well as help optimize Wi-Fi signal settings or identify Wi-Fi security threats?
• Which floor experienced jitter during streaming live presentations?
• Why is the Initial Sequence Number (ISN) of the first SYN in TCP's three-way handshake considered a security risk?
• What physical topology results when multiple devices connect to a central switch?
• If a website's domain name cannot be resolved but the IP address works, what does this suggest about DNS availability?
• Besides IP, which protocol plays a significant role on both IPv4 and IPv6 networks?
• Which metric describes the average time required to repair a failed component?
• Why is a formal change request often required when taking a mission-critical server offline?
• What best describes the difference between an ARP table and a MAC address table?
• Which component enables centralized management of user permissions across the network?
• What best describes protocols in networking?
• What is the default subnet mask for a Class C network?
• In a switch, what is stored to map a MAC address to its location on the switch?
• Which DNS server software is widely used and often abbreviated as BIND?
• Which floors have vacant telecom closets?
• Reviewing the router inventory can reveal which details?
• What change to the PC would fix two-way conversations on conference calls by adjusting the NIC settings?
• What does SPoF stand for in IT infrastructure?
• What is the most popular DNS server software on the market today?
• Which statement about bandwidth is true?
• What type of address is used only at the network layer for routing purposes?
• Jaklyn attempted to access a website but was unsuccessful. Even after trying the website's name, it couldn't be found. However, when using the IP address, the website was accessible. What could be the reason?
• To provide guest Internet access while preventing access to the cafe's internal network, which configuration is most appropriate?
• The data link layer is unique because it can be divided into sublayers. What sublayer is primarily responsible for hardware addressing?
• Baseline configuration is used as the reference state to do what?
• Which cipher type processes data in fixed-size blocks?
• For five isolated networks within a building, each with its own devices, connected to a single ISP, how many NICs are required on the router, and how many switches are needed?
• Which transport protocol is commonly described as fire-and-forget because it does not guarantee delivery?
• What is the term for the combination of a host's IP address and a process's TCP or UDP port, separated by a colon?
• Jamee has been asked to install an update that fixes bugs and zero-day vulnerabilities in the latest Windows. What type of software change is this?
• Which NIC setting allows travel in only one direction?
• What is the relationship between key rotation and data security?
• In order for an application or service to receive data, a port number must be assigned to it. What is it?
• A 42U rack with 1U equal to 1.75 inches is used in a server room. How tall is the rack according to the provided material?
• A technician reports that a fleet of 10 identical LCD monitors flickers intermittently. After inspection, 3 users report the issue. What is the most appropriate action for the IT manager?
• Which term describes using a geographic boundary to enforce access controls on a Wi-Fi network?
• On which OSI layers does a NIC operate, and which are examples of protocols it uses for communication?
• What does a switch learn when it stores a device's MAC address in its MAC address table?
• What is the purpose of a captive portal on a public Wi-Fi network?
• Which statement best describes the SMTP server address in email configuration?
• Ifconfig has been deprecated in many Linux distros. What does deprecate mean in this instance?
• Which statement correctly describes a primary transport protocol that guarantees data delivery through connection-oriented communication?
• Which command is used to elevate privileges in Linux?
• To power ceiling-mounted projectors in classrooms without nearby outlets, which approach is recommended?
• Which description best characterizes FHSS operation?
• If a company phone is lost and IT cannot physically access it, what action would be used to protect data?
• What is the first step when setting up a network router?
• A physical address embedded on every network adapter is called a NAC address.
• Which security feature can cause AP association to fail if not configured correctly?
• On which OSI layer is the MAC address defined?
• What is the central repository called that stores data files for configuration management?
• Which form of multiplexing uses separate time slots to share a channel?
• What form of transmission allows many signals to travel simultaneously over one medium?
• Which device strengthens a weakened network signal?
• What unit is used to measure changes in signal strength?
• In a corporate network using a Class C address scheme, what is a plausible cause for login failures when many users are connecting late in the day?
• Which instrument is used to locate faults or splices in fiber-optic cables by sending light pulses and analyzing reflections?
• Patch Tuesday refers to scheduled updates from which company or ecosystem?
• What is the first step to establish configuration management?
• What is the defined range of IP addresses that a router assigns to clients for DHCP called?
• Which OSI layer handles communication between devices, with tasks performed by the OS when an application makes an API call?
• A router that reads only the network layer header and forwards without altering the transport layer header operates at which OSI layer?
• Why is there no fragment offset field in an IPv6 packet?
• Which OSI layer is responsible for routing and the IP, ICMP, and ARP protocols?
• A small office uses a single Wi‑Fi router. Why is it a bad idea to keep the default network name (SSID)?
• Which port is used by the Network Time Protocol (NTP) for time synchronization?
• What does DoT stand for in the context of DNS security?
• Which device should be used to determine if a fiber-optic splice is faulty?
• Ron’s remote troubleshooting scenario is an example of which function?
• Out-of-band management provides remote options not accessible in-band. Which function is uniquely supported in out-of-band management?
• Katherine visits her banking site and sees HTTP in the address bar. What should she do?
• Which Windows command-line utility would you use to test connectivity to a host by sending ICMP echo requests?
• In Antonella's privacy scenario, what type of encryption is being used?
• In a multi-step time synchronization troubleshooting scenario, what is the correct order of steps?
• IPSec creates secure connections in five steps. Put the following steps in order of operation: 1. Key management 2. Data transfer 3. Security negotiations 4. IPSec initiation 5. Termination
• To ensure continuous operation despite component failure, the system uses a mechanism where a backup component automatically takes over.
• In order to reliably transmit over a noisy channel, what condition must hold between signal and noise?
• Which mechanism requires users to sign in before accessing a public network?
• Which item would you expect to see listed in network inventory documentation?
• Which of the following describes the purpose of offboarding with respect to software?
• In facility cabling terminology, what does the Equipment Room (ER) represent, and with which component is it commonly associated?
• What term describes a rogue access point designed to mimic a legitimate one to steal credentials?
• Which statement about BYOD onboarding policies is true?
• In a network operations center, after discovering unplugged cables that affected Internet connectivity, what troubleshooting step was taken?
• What is the primary material used for the core of fiber-optic cables?
• In troubleshooting an Ethernet cabling issue, what is the first thing to verify?
• Which protocol helps IPv6 devices learn about other devices on their networks?
• Which configuration best isolates guest traffic from internal resources?
• Which wireless technology divides data streams and encodes them into small chunks called chips, which are spread over all available frequencies at the same time?
• What is the primary purpose of GNU Privacy Guard (GnuPG) in the described scenario?
• True or False: It is possible to run multiple DNS servers on a single machine.
• Which of the following can cause latency?
• Which OSI layer handles session management, including synchronization and recovery of data between applications?
• Which factor is mentioned as affecting the rate of data transfer for electrical signals?
• Which statement best describes the function of an MDF on a campus with multiple buildings?
• Which UNIX/Linux command can display basic TCP/IP information? Best single command.
• Which protocol is used to discover neighboring devices and exchange capabilities on a network, typically via a dedicated discovery protocol?
• Which NIC setting allows signals to travel in both directions over a medium but only in one direction at a time?
• What does NDP stand for in IPv6 networking?
• Which process efficiently, effectively, and securely handles system configurations to maintain a desired state and to track configuration changes over time?
• Which DNS software is abbreviated as BIND?
• Which of the following RSSI readings would be considered the strongest signal among the options?
• The statement 'TCP/IP protocols add information at the end of messages in fields called footers' is true or false?
• If a live feed transmitted using UDP shows color glitches because packets are lost or dropped, which statement explains this behavior?
• Which network category best describes a smartwatch, a Bluetooth headset, and a phone communicating over short range?
• Why might two devices fail to communicate even if NIC and IP are correct?
• In a firmware update scenario, what action should be taken for the affected laptops and the rest of the fleet?
• Which practice helps minimize risk when performing troubleshooting in a busy environment?
• Why is it crucial to change the default SSID, username, and password on a router?
• Which command-line utility is used on Linux to monitor traffic from the network?
• Which organization defines the wireless spectrum as a range of frequencies or bands?
• Which notation distinction is correct for data storage versus throughput?
• What is the name of the room designated for housing network equipment at a client's site?
• Which of the following can contribute to an AP association getting stuck?
• As a wave travels into and through a different transmission medium, the wave's direction, speed, and wavelength are altered. What is this phenomenon called?
• Why is ARP described as functioning at layer 2.5?
• Why is Telnet considered unsafe for remote administration?
• Which standard defines Power over Ethernet used to supply power through Ethernet cables?
• In a scenario, a doorbell camera broadcasts on which band?
• Which term describes the single source of truth for configuration data established during configuration management?
• What is the reason for pinging the IP address 127.0.0.1?
• What is ARP's primary role in IP networking?
• What term describes the variation in packet arrival times that can cause video and audio to stutter?
• What does a Statement of Work (SOW) provide in project planning?
• Which IPv6 address type is routable on the Internet and often begins with 2000::/3?
• What does CVE stand for?
• What is a recommended measure to prevent unauthorized access from outside the apartment or garage?
• Which UNIX/Linux command can display IPv4 and IPv6 addresses?
• Two power supplies are installed for each mission-critical server. What concept does this illustrate?
• An IP address is assigned to each node on a network and is used by the network layer to uniquely identify nodes across multiple networks.
• What is the port range from 0 to 1023 and is assigned by IANA to widely used and well-known utilities and applications, such as SSH, Telnet, FTP, and HTTP?
• Multiplexing involves sharing a medium by combining multiple signals in which domains?
• Which term describes interference from signals in neighboring cables within the same bundle?
• What defines the maximum payload size that a layer 2 frame can encapsulate?
• What document describes duties, deliverables, standards, payment schedule, and project timeline for a contractor?
• What does the hostname command do across Windows, macOS, and Linux?
• In the NFC-based ATM scam, which factor most directly indicates the involvement of a malicious actor?
• Which term describes sending multiple signals over a single medium by combining them in different domains?
• Which statement is true about Telnet security?
• DNS servers can coexist on the same machine depending on the needs of the network.
• Which government agency provides guidelines for using tools in a Network Operations Center?
• Which factor is a probable environmental contributor to AP association difficulties?
• Which device forwards frames only to the destination port rather than broadcasting to all ports?
• RSSI measures the power of the signal on the receiver's end and is displayed as negative dBm values. What would be the best rating of the four numbers below?
• Which fiber option should be chosen given the presence of legacy systems and a need to control costs?
• Which protocol provides both encryption and packet authentication in modern Wi-Fi networks?
• Which network-layer protocols are IP, ICMP, and ARP?
• Which statement describes a block cipher?
• Shielded twisted pair surpasses unshielded twisted pair at speeds above what threshold?
• Temperature sensors in network equipment can alert technicians if a device is overheating.
• Which protocol is used for IPv4 host discovery?
• Jackson needs to set up a dedicated Wi-Fi signal for his company's conference room using a point-to-point transmission. Which antenna should he use?
• What type of crosstalk occurs between wire pairs near the source of a signal?
• In a busy office around lunch, why does the wireless signal become spotty at times?
• Project management is the application of specific skills, tools, and techniques to manage projects within the planned project scope, scheduled time, and budgeted cost.
• Which NIC setting allows signals to travel in both directions over a medium simultaneously?
• Which light sources are used to transmit data over fiber-optic cables?
• Which OSI layer is responsible for hardware, cabling, and connectors such as cables, network interface cards, and hubs?
• Which term refers to having duplicate components to keep systems operating during a failure?
• To keep three offices separate while allowing host communication within each office, which setup is appropriate?
• What are common sources of noise that can cause interference on a network?
• Which TCP header field is used to order segments?
• Which network tool would be most suitable for investigating the origin of an unfamiliar IP address on a Windows network?
• What is the best way to ensure a strong signal and eliminate, or at least mitigate, noise from signal transmissions?
• Which document formalizes ongoing business terms between parties across multiple projects?
• What is a main difference between TLS and SSL according to the material?
• What technologies offer methods for increasing theoretical bandwidth and effective data throughput when the same maximum frequency is used?
• Which document is used to define the services to be provided and the service standards the provider will meet?
• What is the Main Distribution Frame (MDF) in a network, and what is its role?
• What is the symptom of an IP address conflict on a host?
• What is the primary use of SCADA in large facilities?
• What are digital certificates primarily used for?
• Which of the following factors can cause signal degradation?
• Anna has a Wi-Fi 6 capable device and a Wi-Fi 1-5 AP; She tests speed to the AP and gets Wi-Fi 5 speeds. Why?
• A workstation can reach the Internet and other devices, but most devices on the network cannot detect it. How can this be resolved?
• A doorbell camera broadcasts on 2.4 GHz, but the AP only broadcasts on 5 GHz. What issue will occur?
• Which statement best describes a MAC address table?
• In time synchronization troubleshooting, which step verifies that you are using a valid time source?
• Which Windows command displays detailed IP configuration for all network adapters?
• If a technician suspects a crossed pair in a twisted-pair Ethernet cable, which instrument should be used to confirm?
• Which term describes the range of frequencies or bands defined for wireless use?
• Which measurement expresses the power of the signal at the receiver end?
• Which measurement uses round-trip time to assess latency?
• Which statement about stream ciphers is true?
• If a laptop shows intermittent crashes and a memory module may be loose, what is a recommended first step to verify?
• Which device typically includes a NIC on-board or via an expansion slot, excluding wireless adapters?
• What is the purpose of encryption?
• Which Linux command historically shows network interface configuration when invoked with no arguments, though it is deprecated in many distributions?
• When implementing a hardware change that could disrupt staff, which policy should guide the process?
• How does the kilo prefix differ between data throughput and data storage?
• Why is migrating to a client-server architecture beneficial for a company with about 30 users?
• Which is an example of an application-layer service?
• What is the one command that is common to Windows, UNIX, and Linux systems?
• Which OSI layer's protocols collaborate with UDP to emulate some of the reliability provided by TCP?