A network administrator is managing network traffic so that classified services and applications are prioritized. Which of the following technologies should the network administrator use?
A. Load balancing
B. Time to live
C. Quality of service
D. Content delivery network
Show Answer
Correct Answer: C
Explanation: Quality of service (QoS) classifies network traffic and assigns priority to selected services and applications, helping ensure critical or latency-sensitive traffic receives appropriate treatment.
Question 84
A company recently experienced outages of one of its critical, customer-facing applications. The root cause was an overutilized network router, but the Chief Technology Officer is concerned that the support staff was unaware of the issue until notified by customers. Which of the following is the best way to address this issue in the future?
A. Packet capture
B. SNMP
C. Syslog collector
D. SIEM
Show Answer
Correct Answer: B
Explanation: SNMP enables proactive monitoring of network devices such as routers by collecting performance metrics and generating alerts when utilization exceeds thresholds. This allows support staff to detect and respond to issues before customers report outages. Packet captures are for troubleshooting, syslog collectors aggregate log messages but do not provide comprehensive performance monitoring, and SIEMs correlate security and event data rather than serving as the primary network performance monitoring solution.
Question 84
A new staff member is unable to connect to the network. An IT support staff member finds the following:
• The IP configuration is correct
• The TCP/IP stack is working on the workstation
• The gateway is unreachable
Which of the following would the IT support staff member most likely check next?
A. The DHCP configuration on the workstation
B. The port’s VLAN assignment on the switch
C. The DHCP configuration on the router
D. The default gateway on the switch
Show Answer
Correct Answer: B
Explanation: If the workstation’s IP settings and TCP/IP stack are correct but it cannot reach its gateway, check whether its switch port is assigned to the correct VLAN. A VLAN mismatch can place the workstation on a different network from the gateway.
Question 85
Which of the following cables is the most appropriate to use when running bulk cables in ceilings?
A. Plenum
B. Coaxial
C. Ethernet
D. DAC
Show Answer
Correct Answer: A
Explanation: Plenum-rated cable is designed for installation in plenum spaces such as many ceiling air-handling areas. Its jacket is made to meet stricter fire-resistance and low-smoke requirements, making it the appropriate choice for running bulk cables in ceilings. Coaxial and Ethernet describe cable types rather than plenum fire ratings, and DAC is for direct-attach connections between network devices.
Question 85
A network administrator needs to locate a specific AP using a spectrum analyzer to complete a 802.11ax device migration. Which of the following should display on the analyzer to locate the AP?
A. SSID
B. RSSI
C. Channel number
D. BSSID
E. ESSID
Show Answer
Correct Answer: B
Explanation: RSSI indicates received signal strength. By watching how it changes as the administrator moves around, they can home in on the AP’s physical location. The BSSID can identify which AP to track, but RSSI guides the physical search.
Question 86
Which of the following should a technician change in order to rapidly propagate a new DNS record?
A. MX
B. CNAME
C. PTR
D. TTL
Show Answer
Correct Answer: D
Explanation: Change the TTL (Time to Live). A lower TTL tells DNS resolvers to cache records for less time, so they request updated records sooner.
Question 87
A network administrator is extending a network beyond the primary equipment location. Which of the following is where the administrator should install additional network switches?
A. MDF
B. VPC
C. VXLAN
D. IDF
Show Answer
Correct Answer: D
Explanation: An Intermediate Distribution Frame (IDF) is used to house access-layer switches and extend network connectivity to areas beyond the Main Distribution Frame (MDF). The MDF is the primary equipment room, while VPC and VXLAN are networking technologies, not physical locations for installing additional switches.
Question 87
An imaging workstation at a hospital is experiencing intermittent connectivity loss. Which of the following would most likely be used to resolve the issue at the least expense?
A. Single-mode fiber
B. Twinaxial cable
C. Spanning tree
D. Shielded twisted pair
Show Answer
Correct Answer: D
Explanation: Shielded twisted-pair cable can reduce electromagnetic interference from nearby imaging equipment and is generally less expensive than replacing the connection with single-mode fiber. Spanning tree addresses network loops, not intermittent signal interference.
Question 88
A network administrator deploys new network hardware. While configuring the network monitoring server, the server could authenticate but could not determine the specific status of the hardware. Which of the following would the administrator most likely do to resolve the issue?
A. Use the public community string.
B. Import the appropriate MI
C. Set up a switch port analyzer and forward traffic.
D. Configure SNMPv3 privacy.
Show Answer
Correct Answer: B
Explanation: If SNMP authentication succeeds but the monitoring server cannot interpret or display detailed hardware status, the server is likely missing the device's Management Information Base (MIB) definitions. Importing the appropriate MIB allows the monitoring software to map vendor-specific OIDs to meaningful hardware status information. The other options do not address the inability to interpret SNMP data after successful authentication.
Question 88
New APs need to be added to the network to increase Wi-Fi coverage. However, no Ethernet connections are available. Which of the following will accomplish this task?
A. Enabling PoE
B. Band steering
C. Mesh deployment
D. Directional antennas
Show Answer
Correct Answer: C
Explanation: A mesh deployment allows new access points to connect wirelessly to other APs, extending coverage without an Ethernet connection to each AP. PoE supplies power, while band steering and directional antennas do not provide a wireless backhaul.
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