Which of the following physical installation factors would be the most important when a network switch is installed in a sealed enclosure?
A. Fire suppression
B. Power budget
C. Temperature
D. Humidity
Show Answer
Correct Answer: C
Explanation: A sealed enclosure restricts airflow, making heat buildup the primary physical installation concern. Network switches have operating temperature limits, and excessive heat can cause degraded performance, shutdowns, or hardware failure. While power budget, humidity, and fire suppression may matter in some environments, temperature is the most critical factor specifically due to the sealed enclosure.
Question 111
Which of the following encryption protocols is used to secure web traffic through HTTPS?
A. SSL
B. IPSec
C. SSH
D. PKI
Show Answer
Correct Answer: A
Explanation: HTTPS secures web traffic using TLS, the successor to SSL. Since SSL is the matching option provided, the answer is A.
Question 112
Which of the following server types is responsible for IP address management for clients?
A. NTP
B. FTP
C. DHCP
D. LDAP
Show Answer
Correct Answer: C
Explanation: DHCP (Dynamic Host Configuration Protocol) is the server/service responsible for automatically assigning and managing IP addresses and related network configuration for clients. NTP synchronizes time, FTP transfers files, and LDAP provides directory services.
Sources:
https://www.zenarmor.com/docs/network-basics/types-of-servers
https://www.spiceworks.com/networking/what-is-a-server
https://www.comptia.org/en-us/blog/what-is-dhcp-dynamic-host-configuration-protocol
Question 112
Whenever a user emails the help desk, a system is needed that will automatically generate a help desk ticket. Which of the following will facilitate this task?
A. GUI
B. API
C. CLI
D. SSH
Show Answer
Correct Answer: B
Explanation: An API lets the email system communicate programmatically with the ticketing system, enabling incoming emails to automatically create help desk tickets.
Question 113
Which of the following objectives does an evil twin achieve?
A. DNS poisoning
B. Login credentials
C. ARP spoofing
D. Denial of service
Show Answer
Correct Answer: B
Explanation: An evil twin is a rogue Wi-Fi access point that impersonates a legitimate network to lure users into connecting. Its primary objective is to intercept traffic and steal sensitive information such as usernames and passwords (login credentials). DNS poisoning, ARP spoofing, and denial of service are different attack techniques or objectives.
Question 114
Clients report that phones are down. The network technicians determine that PCs and printers are online. However, the phones display the message Searching for service. Which of the following should the technicians check first?
A. PoE statistics on the switch
B. DHCP options
C. Data VLANs on switchports
D. The default gateway on the switch
Show Answer
Correct Answer: B
Explanation: The phones are powered on but cannot find or register with the voice service, while PCs and printers on the data network are functioning. This indicates basic network connectivity is present. A common first check is the DHCP configuration for voice devices, specifically the required DHCP options (such as Option 66 or 150, depending on the deployment) that tell IP phones where to locate the TFTP/call manager server. PoE is unlikely because the phones are powered, the data VLAN is already working for PCs/printers, and the switch's default gateway would not selectively affect only phone registration.
Question 114
Which of the following solutions will allow application redundancy regardless of which host the application is running on in the same network segment?
A. VLAN
B. VIP
C. PAT
D. BGP
Show Answer
Correct Answer: B
Explanation: A virtual IP (VIP) can move between hosts on the same network segment, allowing clients to use one stable address even when the application fails over to another host. VLAN separates network segments, PAT translates ports/addresses, and BGP exchanges routing information.
Question 115
A company reports that their facsimile machine no longer has a dial tone when trying to send a fax. The phone cable is damaged on one end. Which of the following types of connectors should a technician replace?
A. F-type
B. RJ45
C. SC
D. RJ11
Show Answer
Correct Answer: D
Explanation: A fax machine connects to a standard analog telephone line using an RJ11 modular connector. A damaged phone cable end should be replaced with an RJ11 connector. F-type is for coaxial cable, RJ45 is for Ethernet, and SC is a fiber-optic connector.
Question 115
A new company is assigned a public /24 IP address block by the ISP. The company network is expected to have 1,000 IP-addressable devices. A network engineer is implementing a firewall at the internet edge for security. Which of the following actions should the engineer take to successfully implement IP addresses on the company network?
A. Use RFC1918 addresses internally and the public address block externally on the firewall with NAT.
B. Apply VLSM to create appropriately sized subnets for use on the internal network as well as on the firewall.
C. Obtain an additional public /23 IP address block from the ISP to ensure there are enough addresses.
D. Confirm that each network device has an appropriate APIPA address and use the public address block externally.
Show Answer
Correct Answer: A
Explanation: A public /24 provides only 254 usable IPv4 addresses, so it cannot address 1,000 devices directly. Use RFC 1918 private addresses internally and configure NAT on the edge firewall to translate traffic to the assigned public address block. VLSM cannot increase the available address count, and an additional /23 would still be insufficient for 1,000 public addresses.
Question 116
Which of the following could provide a lightweight and private connection to a remote box?
A. Site-to-site VPN
B. Telnet
C. Console
D. Secure Shell
Show Answer
Correct Answer: D
Explanation: Secure Shell (SSH) provides an encrypted (private), lightweight remote command-line connection. Telnet is unencrypted, a site-to-site VPN connects networks rather than providing direct remote shell access, and a console connection is typically local rather than remote.
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