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At which of the following layers of the OSI model will the administrator MOST likely start to troubleshoot when a network is experiencing a number of CRC errors?
Answer: A
The question stated "Administrator MOST likely start to troubleshoot when a network is experiencing a number of CRC errors?, therefore, the answer will be letter A. Start from Bottom to Top.
Source: Adapted from community discussion — pedrwc7
Which of the following uses the link-state routing algorithm and operates within a single autonomous system?
Answer: B
B. OSPF (Open Shortest Path First) uses the link-state routing algorithm and operates within a single autonomous system. EIGRP (Enhanced Interior Gateway Routing Protocol) and BGP (Border Gateway Protocol) are also link-state routing protocols, but they are not limited to operating within a single autonomous system. RIP (Routing Information Protocol) is a distance-vector routing protocol, not a link-state routing protocol. It operates within a single autonomous system.
Source: Adapted from community discussion — JakeCharles
A network administrator is designing a wireless network. The administrator must ensure a rented office space has a sufficient signal. Reducing exposure to the wireless network is important, but it is secondary to the primary objective. Which of the following would MOST likely facilitate the correct accessibility to the Wi-Fi network?
Answer: D
The MOST likely factor to ensure the correct accessibility to the Wi-Fi network in the scenario described is the antenna type, as it affects the coverage, signal strength, and performance of a wireless network. The other options listed (polarization, channel utilization, channel bonding, MU-MIMO) may improve the performance of a wireless network, but are not the primary factor in ensuring the correct accessibility in this scenario.
Source: Adapted from community discussion — JakeCharles
An office area contains two PoE-enabled WAPs. After the area was remodeled, new cable uplinks were installed in the ceiling above the fluorescent lights. However, after the WAPs were reconnected, users reported slowness and application errors. An intern reviewed the network and discovered a lot of CRC errors. A network engineer reviewed the intern's work and realized UTP cabling was used. Which of the following is the MOST likely cause of the CRC errors?
Answer: C
Very obviously, C. Mike Meyers "CRC Errors CRC errors in this section is a duplicate in the objectives, and appears in the previous section.They occur when packets contain invalid values, and possible causes include a faulty port, poor wiring, and even electromagnetic interference (EMI)." Emmett Dulaney "EMI is a problem when cables are installed near electrical devices, such as air conditioners or fluorescent light fixtures. If a network medium is placed close enough to such a device, the signal within the cable might become corrupt. Network media vary in their resistance to the effects of EMI. Standard unshielded twisted-pair (UTP) cable is susceptible to EMI, whereas fiber cable, with its light transmissions, is resistant to EMI. When deciding on a particular medium, consider where it will run and the impact EMI can have on the installation."
Source: Adapted from community discussion — LeonardSnart
A network technician is reviewing the interface counters on a router interface. The technician is attempting to confirm a cable issue. Given the following information:
Which of the following metrics confirms there is a cabling issue?
Answer: C
CRC errors mean that packets have been damaged. This can be caused by a faulty port on the device or a bad Ethernet cable. Changing the cable or apping the port is a relatively easy fix. Occasionally, they are generated on layer 2 by a duplex mismatch. It can also be the result of collisions or a tation transmitting bad data.
Source: Adapted from community discussion — Pongsathorn
Several users with older devices are reporting intermittent connectivity while in an outdoor patio area. After some research, the network administrator determines that an outdoor WAP might help with the issue. However, the company does not want the signal to bleed into the building and cause interference. Which of the following should the network administrator perform to BEST resolve the issue?
Answer: C
C. Install a directional WAP in the direction of the patio. Installing a directional WAP is the best solution to provide a strong signal in the patio area without interfering with the building's Wi-Fi signal. Directional WAPs use a focused beam to provide a strong signal in a specific direction, which helps to reduce interference with neighboring Wi-Fi networks. This solution will also ensure that the signal is only available in the patio area, preventing signal bleed into the building.
Source: Adapted from community discussion — StellarSteve
Which of the following is most likely to have the HIGHEST latency while being the most accessible?
Answer: A
Satellite is most likely to have the HIGHEST latency while being the most accessible. While satellite internet may be available in remote or rural areas where other options like DSL or cable are not available, the signal has to travel long distances to reach the satellite in orbit and then back down to Earth, resulting in high latency.
Source: Adapted from community discussion — StellarSteve
Which of the following is used to elect an STP root?
Answer: A
▪ Root bridge ● Switch elected to act as a reference point for a spanning tree ● Switch with the lowest bridge ID (BID) is elected as the root bridge ● BID is made up of a priority value and a MAC address (with the lowest value considered root) -Jason Dion-
Source: Adapted from community discussion — pedrwc7
Which of the following commands can be used to display the IP address, subnet address, gateway address, and DNS address on a Windows computer?
Answer: D
The correct command to display the IP address, subnet address, gateway address, and DNS address on a Windows computer is D. ipconfig /all. The ipconfig command is a utility that allows you to view and modify the network configuration of a Windows computer. By running the command "ipconfig /all", you can view detailed information about the network configuration of your computer, including the IP address, subnet mask, default gateway, and DNS server addresses. Option A (netstat -a) is a command that displays active network connections and their status, but it does not display IP address or other network configuration information. Option B (ifconfig) is a command used on Linux and Unix systems to view and modify network configuration, but it is not available on Windows. Option C (ip addr) is a command used on Linux and Unix systems to view and modify network configuration, but it is not available on Windows.
Source: Adapted from community discussion — JakeCharles
A user calls the help desk to report being unable to reach a file server. The technician logs in to the user’s computer and verifies that pings fail to respond back when trying to reach the file server. Which of the following would BEST help the technician verify whether the file server is reachable?
Answer: D
To verify whether the file server is reachable, the technician can use the traceroute command (option D). Traceroute is a network diagnostic tool that allows you to trace the path that network packets take from one device to another. By running traceroute to the file server, the technician can see the sequence of devices and networks that the packets pass through on their way to the file server. This can help the technician to determine if there is a problem with the network connection between the user's computer and the file server, or if the issue is with the file server itself.
Source: Adapted from community discussion — JakeCharles
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