Users are reporting issues with mobile phone connectivity after a cellular repeater was recently installed. Users also note that the phones are rapidly losing battery charge. Which of the following should the technician check first to troubleshoot the issue?
A. WPS configuration
B. Signal strength
C. Channel frequency
D. Power budget
Show Answer
Correct Answer: B
Explanation: Rapid battery drain after installation of a cellular repeater commonly indicates the phone is struggling with weak or unstable cellular coverage, causing it to increase transmit power while searching for or maintaining a connection. The first troubleshooting step is to verify signal strength to ensure the repeater is providing adequate coverage. WPS is unrelated to cellular repeaters, channel frequency is not the primary initial check for this symptom, and power budget is more relevant to network infrastructure design than handset connectivity troubleshooting.
Question 65
A network engineer sees traffic going to 224.7.8.99. Which of the following describes this traffic type?
A. Broadcast
B. Unicast
C. Multicast
D. Anycast
Show Answer
Correct Answer: C
Explanation: 224.7.8.99 falls within the IPv4 multicast address range, 224.0.0.0 through 239.255.255.255, so traffic to it is multicast.
Question 66
A systems administrator is configuring a new domain server in the network. Which of the following ports should the administrator open in the firewall to allow secure LDAP communications between the domain and the desktops?
A. 389
B. 587
C. 636
D. 3389
Show Answer
Correct Answer: C
Explanation: Secure LDAP (LDAPS) uses TCP port 636. Port 389 is used for standard LDAP; 587 is for SMTP submission, and 3389 is for Remote Desktop.
Question 67
Developers want to create a mobile application that requires a runtime environment, developer tools, and databases. The developers will not be responsible for security patches and updates. Which of the following models meets these requirements?
A. Container as a service
B. Infrastructure as a service
C. Platform as a service
D. Software as a service
Show Answer
Correct Answer: C
Explanation: Platform as a Service (PaaS) provides the runtime environment, development tools, and managed databases while the cloud provider is responsible for maintaining the underlying platform, including security patches and updates. IaaS leaves OS and platform maintenance to the customer, SaaS is for consuming finished applications, and CaaS focuses on container orchestration rather than providing a full managed development platform.
Question 67
A public library wants to implement a solution in which users need to connect to the wireless network and then authenticate via HTTPS with provided credentials. Which of the following technologies fulfills this requirement?
A. WPA3
B. Captive portal
C. Single sign-on
D. SAML
Show Answer
Correct Answer: B
Explanation: A captive portal redirects users who connect to the wireless network to an HTTPS login page where they enter credentials before receiving access. WPA3 secures the Wi‑Fi connection but does not provide this browser-based authentication flow.
Question 68
A network administrator is establishing Layer 3 connectivity between Layer 2 segments. Which of the following does the administrator need to complete this task?
A. VIP
B. NAT
C. SVI
D. 802.1Q tagging
Show Answer
Correct Answer: C
Explanation: A Switch Virtual Interface (SVI) provides a Layer 3 interface on a multilayer switch, enabling routing between Layer 2 VLANs/segments. A VIP is a virtual IP used for redundancy/load balancing, NAT translates addresses, and 802.1Q tagging identifies VLAN traffic on trunk links but does not provide Layer 3 routing.
Question 68
Which of the following is the administrative distance for internal BGP routes?
A. 20
B. 110
C. 170
D. 200
Show Answer
Correct Answer: D
Explanation: Internal BGP (iBGP) routes have an administrative distance of 200. (External BGP routes have an administrative distance of 20.)
Question 69
Employees report that website requests are being redirected to other websites that display different content than expected. Which of the following attacks is most likely causing this issue?
A. MAC flooding
B. ARP spoofing
C. DNS poisoning
D. VLAN hopping
Show Answer
Correct Answer: C
Explanation: DNS poisoning (DNS cache poisoning) redirects users to incorrect IP addresses for legitimate domain names, causing website requests to be sent to different websites with unexpected content. MAC flooding affects switch CAM tables, ARP spoofing redirects local traffic via a malicious host, and VLAN hopping targets VLAN isolation rather than causing domain-name-based website redirection.
Question 69
Which of the following cloud platform technology characteristics would a quantum computing host most likely prioritize?
A. Scalability
B. Elasticity
C. Multitenancy
D. Cost
Show Answer
Correct Answer: A
Explanation: A quantum computing host would most likely prioritize scalability: its capacity must grow to support increasing numbers of qubits and the computational demands of larger workloads.
Question 70
Which of the following is the best reason to create a golden configuration?
A. To provide configuration consistency
B. To decrease the size of configuration files
C. To increase security by encrypting configurations
D. To set up backup configurations for each device
Show Answer
Correct Answer: A
Explanation: A golden configuration is a standardized, validated baseline configuration used across devices to ensure consistency, simplify deployment, reduce configuration drift, and ease management. It is not primarily intended to shrink configuration files, encrypt configurations, or serve as a backup configuration.
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