Several users report poor performance when accessing shared drives on a file server named Filed. While troubleshooting the issue, the network administrator swaps the Ethernet connections between File01 and another server named File02. Shortly thereafter, users report issues with File02, but Filed is no longer an issue. Which of the following is most likely impacting performance?
A. Port security
B. Speed/duplex mismatch
C. PoE power budget reduction
D. Keep-alive beacon failure
Show Answer
Correct Answer: B
Explanation: The key clue is that the performance problem follows the Ethernet connection rather than staying with a specific server. When the administrator swaps the cables, File01’s problem disappears and File02 begins experiencing the same poor performance. That strongly indicates an issue with the switch port or link characteristics, not the server itself. A speed/duplex mismatch commonly causes slow file access, retransmissions, and collisions, and will affect whichever device is connected to the misconfigured port. Port security would typically block access outright, PoE is irrelevant for servers, and keep-alive failures would cause disconnections rather than persistent slowness.
Question 158
Which of the following can be used when a server at a remote site is physically unreachable?
A. OOB management
B. Crash cart
C. Jump box
D. Console
Show Answer
Correct Answer: A
Explanation: Out-of-band (OOB) management provides remote access to a server through a separate management channel that does not rely on the primary network or physical presence. This makes it suitable when a server is physically unreachable. A crash cart requires on-site access, a jump box depends on network connectivity, and a console typically implies local or direct access.
Question 159
SIMULATION
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A network technician needs to resolve some issues with a customer's SOHO network. The customer reports that some of the PCs are not connecting to the network, while others appear to be working as intended.
INSTRUCTIONS
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Troubleshoot all the network components.
Review the cable test results first, then diagnose by clicking on the appropriate PC and server. Type help in each terminal to view a list of available commands.
Identify any components with a problem and recommend a solution to correct each problem.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Show Answer
Correct Answer: Cable between Switch 1 (Gi0/5) and Switch 2:
Connector on backward → Replace cable
Server 1:
Bad gateway address → Change gateway address
PC2:
Wrong VLAN → Change VLAN assignment
PC3:
Bad subnet → Change subnet mask
PC1, PC4, PC5, PC6:
No problem
Explanation: Cable test shows improper connector orientation between switches, preventing reliable link operation. Server 1 cannot reach outside networks due to an incorrect default gateway. PC2 is assigned to the wrong VLAN, isolating it from the intended network. PC3 has an incorrect subnet mask, causing addressing issues. The remaining PCs test and configure correctly.
Question 160
SIMULATION
-
A network administrator receives a ticket stating there is a connectivity issue between the server and the storage devices. The administrator needs to identify any issues and implement the appropriate solutions.
INSTRUCTIONS
-
Click on each access and core switch. Enter commands into the terminal to identify any problems and select the appropriate resolutions. Type help in each terminal to view a list of available commands.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Show Answer
Correct Answer: Access Switch 1:
Err-disabled interface
Disable BPDU Guard
Core Switch 1:
No problem found
No action required
Access Switch 2:
Giants and input errors
Enable jumbo frames
Explanation: Access Switch 1 shows an err-disabled port caused by BPDU Guard, so disabling BPDU Guard restores the interface. The core switch interfaces are up with no errors, requiring no changes. Access Switch 2 reports giants/input errors, indicating MTU mismatch; enabling jumbo frames resolves oversized frame drops.
Question 161
A systems administrator installs multiple web servers and intends to use the First Hop Redundancy Protocol to control routing to the servers. Which of the following types of IP addresses should the administrator use to support this routing approach?
A. Virtual
B. Gateway
C. Static
D. Dynamic
Show Answer
Correct Answer: A
Explanation: First Hop Redundancy Protocols (such as HSRP, VRRP, or GLBP) use a virtual IP address that represents the default gateway for clients. This virtual IP remains consistent while the underlying physical router handling traffic can change during failover, enabling redundancy and high availability.
Question 163
A network administrator needs to disable all inbound and outbound telnet traffic in the network. Which of the following ports should the administrator disable?
A. 23
B. 53
C. 123
D. 443
Show Answer
Correct Answer: A
Explanation: Telnet uses TCP port 23 for both inbound and outbound connections. Disabling port 23 blocks Telnet traffic. The other ports correspond to DNS (53), NTP (123), and HTTPS (443).
Question 164
Which of the following should be included in an SLA?
A. Patches and bug fixes
B. Licensing
C. Inventory management
D. Stakeholders
Show Answer
Correct Answer: A
Explanation: An SLA defines the scope and quality of services provided, including support and maintenance obligations. This commonly covers items such as response times for issues, ongoing maintenance, and the handling of patches and bug fixes. Licensing and inventory management are governed by separate agreements or internal processes, while stakeholders may be referenced but are not a core service component the SLA is meant to guarantee.
Question 165
A network administrator needs to connect a multimode fiber cable from the MDF to the server room. The administrator connects the cable to Switch 2, but there is no link light. The administrator tests the fiber and finds it does not have any issues. Swapping the connection to Switch 1 in a working port is successful, but the swapped connection does not work on Switch 2. Which of the following should the administrator verify next?
A. Fiber length
B. Transceiver model
C. Connector type
D. Port speed
Show Answer
Correct Answer: B
Explanation: The fiber cable has been tested and works when connected to Switch 1, which rules out the cable, connector type, and fiber length. Since the same cable and port type fail only on Switch 2, the most likely cause is an incompatible or incorrect fiber transceiver installed in Switch 2 (e.g., wrong multimode/single‑mode type or unsupported model). Therefore, the administrator should verify the transceiver model.
Question 166
A user in the finance department reports that they cannot access the internet. Other finance department users are not having issues.
A network administrator runs a route print command on the user's machine:
Which of the following is most likely the root cause of the issue?
A. The default route is missing.
B. The route metric value is incorrect.
C. The interface is pointing to the localhost.
D. The default gateway is configured with an incorrect subnet mask.
Show Answer
Correct Answer: A
Explanation: If the user cannot reach the internet while other local users can, the most common per-host routing issue is a missing default route (0.0.0.0/0). Without a default route, traffic destined for non-local networks has no path and is dropped. A route print output lacking a 0.0.0.0 entry confirms this. Incorrect metrics or subnet masks would typically still show a default route, and a localhost interface would break even local connectivity.
Question 167
An administrator requests a certificate for the company's domain name. In order to prove ownership of the domain, the certificate authority asks the administrator to create a specific DNS record. Which of the following record types is required?
A. SOA
B. MX
C. NS
D. TXT
Show Answer
Correct Answer: D
Explanation: Certificate authorities commonly use DNS-based domain validation by requiring the domain owner to create a specific TXT record with a provided token. The presence of this TXT record proves control over the domain. SOA, MX, and NS records are not used for ownership validation.
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