Network+ (N10-004) Quiz G

SMTP (Simple Mail Transfer Protocol) is used for transmitting email. It is a standard protocol that allows the sending and receiving of email messages between servers. SMTP is responsible for the transfer of outgoing mail from a sender's email client to the recipient's mail server. It works in conjunction with other protocols like POP3 or IMAP, which are used for retrieving emails from a mail server.

The correct answer is to ensure the failed computer has the correct WEP key. This is because the question states that the machine sees the wireless network but will not connect. This suggests that the issue is with the authentication or security settings, which in this case is the WEP key. By ensuring that the failed computer has the correct WEP key, the technician can resolve the problem and allow the computer to connect to the wireless network.

Adding an additional NIC and setting up network teaming would provide fault tolerance for the file server. Network teaming allows multiple NICs to work together as a single virtual NIC, providing redundancy in case one NIC fails. This ensures that the file server remains accessible even if one NIC goes down.

An administrator would have to configure channels on a wireless access point. Channels are used to divide the frequency spectrum into smaller bands to avoid interference between different wireless networks. By configuring channels on a wireless access point, the administrator can select the specific frequency band that the access point will use to communicate with wireless devices. This allows for optimal performance and reduces the likelihood of interference from other wireless networks operating in the same area.

A switch is a device that controls traffic on a LAN by using MAC addresses to forward data packets to the appropriate destination. It operates at the data link layer of the OSI model and can create multiple collision domains, allowing for simultaneous communication between multiple devices on the network. Unlike a hub, which simply broadcasts data to all connected devices, a switch intelligently directs data only to the device it is intended for, improving network efficiency and reducing collisions. Therefore, a switch is the correct answer for this question.

Adding a second NIC would provide the highest level of fault tolerance because it allows for redundancy in network connections. If one NIC fails, the other NIC can still handle the DNS requests, ensuring that the server remains accessible. This helps to minimize downtime and maintain the availability of the server.

The technician failed to configure the DHCP (Dynamic Host Configuration Protocol) correctly. DHCP is responsible for assigning IP addresses to devices on a network. Without proper DHCP configuration, the PCs connected to the router are not able to acquire an IP address, resulting in the network connectivity issue.

Single Mode Fiber has the longest maximum segment length compared to the other network media listed. Single Mode Fiber is designed to carry a single ray of light, allowing for longer distances to be covered without signal degradation. CAT6, Coaxial cable, and Multimode Fiber have shorter maximum segment lengths in comparison.

SNMP (Simple Network Management Protocol) is the best method to monitor the Internet router for failures. SNMP allows for the monitoring and management of network devices, including routers, by collecting and organizing information about their status and performance. It can send alerts and notifications to a technician when an issue or failure occurs, ensuring that they are promptly informed and can take appropriate action to restore connectivity.

Snips would be the best tool to prepare the CAT5 cable for placing an RJ-45 connector. Snips are commonly used for cutting wires and cables, and they provide a clean and precise cut. Using snips ensures that the cable ends are neat and properly trimmed, allowing for a better connection when attaching the connector. Pliers may be used for other tasks such as crimping, but they are not the most suitable tool for preparing the cable. A polishing kit is not necessary for preparing the cable, and a razor knife may not provide as clean of a cut as snips.

A hub operates on Layer 1 of the OSI model. A hub is a simple networking device that connects multiple devices in a network, allowing them to communicate with each other. It receives signals from one device and broadcasts them to all other devices connected to it. Hubs do not perform any intelligent processing or filtering of data, making them operate at the physical layer (Layer 1) of the OSI model.

The command "nbtstat" is used to find the NETBIOS name of a workstation using its IP address. This command is specifically designed to display the NetBIOS over TCP/IP (NetBT) protocol statistics, which includes information about the NetBIOS name. The other options, such as "netstat" and "ipconfig", do not provide this specific functionality. "Ping" is used to test the reachability of a host on an IP network and does not provide information about the NETBIOS name.

SNMP (Simple Network Management Protocol) is part of the IP protocol suite and is used to monitor network managed devices. It allows network administrators to manage and monitor network devices such as routers, switches, and servers. SNMP provides a standardized way to collect and organize information about network devices, as well as the ability to remotely manage these devices. It is commonly used for network monitoring, troubleshooting, and performance management.

A technician would use plenum-rated cable when installing cable in ceilings because plenum-rated cable is specifically designed to be used in the plenum spaces of buildings, which are the spaces above suspended ceilings or below raised floors. Plenum spaces are used for air circulation, and plenum-rated cable is made with fire-resistant materials that emit less toxic smoke and fumes in case of a fire, making it safe to use in these areas.

A switch is capable of operating at both layers 2 and 3 of the OSI model. At layer 2, it functions as a bridge, forwarding data packets based on their MAC addresses. At layer 3, it can also perform routing functions, forwarding packets based on their IP addresses. This dual functionality allows switches to efficiently connect devices within a local network (layer 2) as well as route traffic between different networks (layer 3).

In a network constructed using star topology, all the devices are connected to one central device known as the hub. The hub acts as a central point for all the devices to connect to and allows them to communicate with each other. It receives data from one device and broadcasts it to all other devices connected to the hub. This allows for easy expansion of the network as new devices can simply be connected to the hub.

A crossover cable is typically used to connect a hub to a hub that does not support MDI-X. This type of cable allows for the direct connection of two similar devices, such as two hubs, without the need for a switch. The crossover cable has the transmit and receive wires crossed over, allowing the devices to communicate effectively. This is in contrast to a straight cable, which is used to connect different types of devices, such as a hub to a switch. A loopback cable is used for testing purposes, and a rollover cable is used to connect a computer to a router or switch console port.

AES (Advanced Encryption Standard) is the strongest type of wireless encryption. It is a symmetric encryption algorithm that uses a 128-bit, 192-bit, or 256-bit key to encrypt and decrypt data. AES is widely used and considered secure, making it the preferred choice for protecting wireless networks from unauthorized access and data breaches. RADIUS (Remote Authentication Dial-In User Service) is a networking protocol used for authentication, authorization, and accounting. WEP (Wired Equivalent Privacy) is an outdated and insecure encryption protocol, while TKIP (Temporal Key Integrity Protocol) is a more secure alternative to WEP but not as strong as AES.

A caching engine would accelerate repeated access requests for static web content by storing a copy of the content on the server or in a local cache. When a user requests the content again, the caching engine can retrieve it from the cache instead of fetching it from the original source. This reduces the latency and network traffic associated with accessing the content, resulting in faster response times for subsequent requests.

A crimping tool should be used to physically attach an RJ-45 connector to a CAT5 cable. This tool is specifically designed to crimp or compress the connector onto the cable, creating a secure and reliable connection. Snips are used for cutting wires, a screwdriver is used for tightening or loosening screws, and a punch down tool is used for terminating wires on a punch down block. However, none of these tools are suitable for attaching an RJ-45 connector to a CAT5 cable.

A packet analyzer is the best tool to troubleshoot the issue of inquiries to the database server timing out. A packet analyzer captures and analyzes network traffic, allowing the user to inspect the packets being sent between the client and the server. By examining the packets, the user can identify any issues or errors that may be causing the timeouts, such as network congestion, packet loss, or misconfigured settings. This tool provides valuable insights into the network communication and helps in diagnosing and resolving the problem effectively.

The administrator should update the wiring diagrams because the cabling has been verified to be terminated and functioning correctly. Updating the wiring diagrams will ensure that the documentation accurately reflects the current configuration of the network, including the new conference room and the six new data ports. This will help in troubleshooting any future issues and in maintaining an organized and up-to-date network infrastructure.

PAP (Password Authentication Protocol) is the correct answer because it is an authentication protocol that transmits usernames and passwords in clear-text format. This means that the information is not encrypted and can be easily intercepted by attackers. RADIUS (Remote Authentication Dial-In User Service) and CHAP (Challenge-Handshake Authentication Protocol) both use encryption to protect the transmission of usernames and passwords. SSH (Secure Shell) is a secure protocol that encrypts all data, including usernames and passwords, ensuring they are not transmitted in clear-text.

A proxy server in an enterprise environment allows for granular control over the traffic between the local LAN and the Internet. This means that the administrator can regulate and monitor the flow of data, allowing or blocking specific websites or types of content. It provides an additional layer of security by filtering out malicious attacks on the network. It does not provide a fixed IP address or help in accessing hard to find websites.

Enabling VLANs allows certain ports to be part of the same group while other ports within that switch are part of a different group. VLANs (Virtual Local Area Networks) are used to segment a network into separate broadcast domains, allowing for better network management and security. By assigning ports to different VLANs, network administrators can control which devices can communicate with each other, creating separate groups or segments within the network. This allows for more efficient use of network resources and better control over network traffic.

A technician would utilize an SC connector with fiber lines by pushing it directly into the port without twisting. The SC connector is a type of fiber optic connector that features a push-pull latching mechanism, allowing for easy and quick installation. It is commonly used in single-mode fiber optic networks and provides low insertion loss and high return loss. The connector has a square-shaped design and utilizes a ceramic ferrule to ensure precise alignment of the fibers.

The MDF, or Main Distribution Frame, would be the first component installed for the new network. The MDF is the central point where all the network cables from various locations are terminated and connected. It acts as a hub for distributing network connections to different areas or departments within a building or campus. By installing the MDF first, the technician can ensure that all the necessary network connections are properly organized and distributed to the rest of the network infrastructure.

A switch is a Layer 2 device that is used to connect multiple nodes on a network. Unlike a router, which operates at Layer 3 and is used to connect different networks, a switch operates at Layer 2 and is used to connect devices within the same network. A switch forwards data packets based on the MAC addresses of the devices connected to it, allowing for efficient communication between multiple nodes on the network. Therefore, a switch is the correct answer for this question.

The technician should first identify what the employee cannot access in order to understand the specific resource or network area that is causing the access denied error message. This will help the technician narrow down the troubleshooting process and focus on resolving the issue in that specific area. By identifying the exact resource or network area, the technician can then proceed with implementing an action plan to resolve the issue and document the process for future reference. Asking the employee what has changed since yesterday may be helpful, but it should be done after identifying the specific access issue.

The technician will most likely check the cable ends to resolve the intermittent connectivity issue between the wired workstation and the file server. This is because the problem started after the installation of the new wireless router, suggesting that there might be an issue with the cables connecting the workstation to the router or the router to the file server. By checking the cable ends, the technician can ensure that the cables are properly connected and not causing any disruptions in the network connection.

A hub is a network device that is used to connect multiple devices without segmenting a network. Unlike a switch or a router, a hub simply broadcasts incoming data packets to all devices connected to it, regardless of the destination. This means that all devices connected to a hub share the same bandwidth, which can lead to network congestion and slower speeds. However, a hub is a cost-effective solution for small networks where network segmentation is not required.

A 66 block is a component in a wiring system that is specifically designed to support legacy phone systems. It is a type of punch-down block that is used to connect telephone wires to each other or to other equipment. It allows for easy termination and cross-connection of telephone wires, making it ideal for use with older phone systems. Fiber conduit, 110 block, and patch panels are not specifically designed for legacy phone systems, so they are not the correct answer.

Convergence refers to the process by which routers in a network exchange information and update their routing tables in response to changes in the network topology. In this scenario, the time lag of several minutes until service is restored suggests that there is a delay in the routers' convergence process. This delay could be caused by factors such as slow convergence algorithms, network congestion, or a large number of routers in the network. The delay in convergence results in a longer downtime for the users at the remote office until the routers can reestablish the optimal paths to headquarters.

PPTP (Point-to-Point Tunneling Protocol) is the correct answer. PPTP runs over port 1723 and allows encryption to be done at the data level. PPTP is a VPN protocol that creates a secure connection between the client and the server, allowing for secure transmission of data over a public network. It is commonly used for remote access VPNs and supports encryption of data packets, ensuring the confidentiality and integrity of the transmitted information.

A patch panel allows a technician to use short Ethernet cables to connect cable drops to other devices. A patch panel is a device that provides multiple ports for connecting and managing network cables. It acts as a central point for organizing and routing network cables, allowing for easy connections and disconnections. By using short Ethernet cables, the technician can efficiently connect cable drops to other devices without the need for long cables.

The correct answer is Infrared. Infrared technology allows for short-range wireless communication between devices, typically within a range of 3 feet or 1 meter. This technology is commonly used for synchronization purposes, such as syncing a wireless device to a computer. WiFi and Bluetooth, on the other hand, have much larger ranges and can operate at greater distances. Serial is a type of wired connection, not wireless.

A cable modem would be the most likely WAN technology type used in a SOHO (Small Office/Home Office) environment with a few network devices. Cable modems utilize the existing cable television infrastructure to provide high-speed internet access. They are commonly used in residential and small business settings due to their affordability and ease of installation. Cable modems are capable of providing sufficient bandwidth for a small network with a few devices, making them a suitable choice for a SOHO environment.

802.11n is the correct answer because it is a wireless communication standard that allows for communication at both 2.4GHz and 5GHz frequencies. This standard is an improvement over previous standards such as 802.11a, 802.11b, and 802.11g, which only operate at either 2.4GHz or 5GHz frequencies. 802.11n is capable of using multiple antennas and advanced signal processing techniques to achieve higher data rates and improved range compared to earlier standards.

After implementing a solution for a network issue, the next step in troubleshooting should be to test if the solution works and identify any other effects it may have. This is important to ensure that the issue has been resolved and that the solution does not cause any additional problems. Documenting the issue and solution, escalating the issue, and gathering information about the issue are all important steps in the troubleshooting process, but they should be done after testing the solution.

SCP (Secure Copy Protocol) is a secure method for file transfer to a network device. It uses SSH (Secure Shell) protocol to provide secure and encrypted file transfers. SCP ensures the confidentiality and integrity of the transferred files by encrypting the data and using authentication mechanisms. Unlike FTP (File Transfer Protocol) and TFTP (Trivial File Transfer Protocol), which do not provide secure file transfers, SCP is a recommended method for transferring files securely over a network. SNMPv2 (Simple Network Management Protocol version 2) is not a file transfer protocol, but rather a network management protocol.

Connecting the data center's power to a generator would be the most effective solution in this situation. A generator can provide a continuous power supply for several hours, allowing the data center to keep running even when the main power source is unavailable. Using a battery backup or a UPS (Uninterruptible Power Supply) would only provide temporary power for a limited period of time, whereas a generator can provide a longer-term solution. Connecting all the switches to a generator would ensure that all the equipment in the data center remains powered and operational during the power outage.

802.11a is the correct answer because it is the wireless technology that uses the 5GHz spectrum. The other options, 802.11n, 802.11g, and 802.11b, use the 2.4GHz spectrum. The 5GHz spectrum provides faster data transfer rates and less interference compared to the 2.4GHz spectrum.

The cause of the problem is that the workstation has the wrong host name. This means that when the technician tries to ping the workstation by its network name, the request is not reaching the correct destination because the host name is incorrect.

The correct answer is 10Base-FL. This cable standard is used for Ethernet over fiber.

An Intrusion Prevention System (IPS) is a network security device that monitors network traffic for malicious activities and prevents users from propagating viruses. It works by analyzing network packets and comparing them against a database of known attack signatures. When a potential threat is detected, the IPS can take immediate action to block the malicious traffic and prevent it from spreading throughout the network. This proactive approach helps to protect the network from viruses and other malware, ensuring a safer and more secure environment for users.

The Transport layer is responsible for providing reliable communication according to the OSI model. This layer ensures that data is delivered accurately and in order, by using protocols such as TCP (Transmission Control Protocol). It handles error checking, flow control, and congestion control to ensure that data is transmitted reliably between the source and destination.

The access problem could be due to the computer being connected to a port in the wrong VLAN, which means it is not in the correct network segment to access the server resources. Additionally, the appropriate credentials may not have been supplied for network access, which would prevent the user from authenticating and accessing the server resources.

Port mirroring would need to be implemented on the switch in order for the administrator to receive complete packet information. Port mirroring allows for the duplication of network traffic from one port to another, which would enable the packet analyzer to capture all packets passing through the switch. This feature is commonly used for network monitoring and troubleshooting purposes.

The correct answer is Channels 6-6-6. In the 802.11g standard, there are 11 channels available for use. However, these channels overlap with each other, causing interference. To minimize interference, it is recommended to use non-overlapping channels. Channels 1, 6, and 11 are the only non-overlapping channels in the 802.11g standard. Therefore, in this scenario, the access points should be set to Channels 6-6-6 to avoid interference and provide optimal coverage.

RADIUS (Remote Authentication Dial-In User Service) is an authentication method that allows for domain level authentication on a wireless network. It is a networking protocol that provides centralized authentication, authorization, and accounting (AAA) management for users who connect and use a network service. RADIUS allows for authentication of users against a central database, such as Active Directory, which enables domain level authentication on a wireless network. WAP (Wireless Application Protocol) is a protocol for accessing information over a mobile wireless network, TKIP (Temporal Key Integrity Protocol) is an encryption protocol, and WEP (Wired Equivalent Privacy) is a security algorithm for wireless networks.