An investment bank is seeking a DR backup solution. Which of the following provides the most cost-effective backup site?
A. Hot
B. Cold
C. Cluster
D. Warm
Show Answer
Correct Answer: B
Explanation: A cold site is the most cost-effective disaster recovery option because it provides minimal infrastructure with little to no pre-installed hardware or active systems. While recovery time is longer compared to hot or warm sites, the significantly lower ongoing cost makes it the most economical choice.
Question 229
Which of the following routing protocols needs to have an autonomous system set in order to establish communication with neighbor devices?
A. OSPF
B. EIGRP
C. FHRP
D. RIP
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Correct Answer: B
Explanation: EIGRP requires an autonomous system (AS) number to be configured, and routers must share the same AS number to form neighbor adjacencies and exchange routing information. OSPF uses areas (with a process ID locally significant), RIP does not use AS numbers, and FHRP is not a routing protocol.
Question 230
A network administrator needs to implement a solution to filter access to the internet. Which of the following should the administrator most likely implement?
A. Router
B. Cloud gateway
C. Proxy
D. Intrusion detection system
Show Answer
Correct Answer: C
Explanation: Filtering access to the internet typically involves controlling and inspecting web traffic based on policies such as URLs, domains, content categories, or users. A proxy server sits between clients and the internet and is specifically designed to allow, block, log, and filter web requests. Routers primarily forward traffic, IDS monitors for attacks rather than enforcing access control, and a cloud gateway is broader and not the most direct or classic solution for web filtering in this context.
Question 231
Which of the following will most likely allow a network administrator to work with current data after a disaster?
A. Review backup tapes.
B. Recover from cloud storage.
C. Fail over to a hot site.
D. Restore from a snapshot.
Show Answer
Correct Answer: C
Explanation: The key phrase is "work with current data after a disaster." A hot site is a fully operational secondary location with systems and data replicated in near real time. Failing over to a hot site allows immediate access to the most up‑to‑date data with minimal downtime. Backup tapes, snapshots, and typical cloud restores involve restoring data from a previous point in time, which may not be current.
Question 232
A network administrator needs to assign IP addresses to a newly installed network. They choose 192.168.1.0/24 as their network address and need to create three subnets with 30 hosts on each subnet. Which of the following is a valid subnet mask that will meet the requirements?
A. 255.255.255.128
B. 255.255.255.192
C. 255.255.255.224
D. 255.255.255.240
Show Answer
Correct Answer: C
Explanation: Each subnet must support at least 30 usable hosts. That requires 32 total addresses per subnet (30 hosts + network + broadcast), which corresponds to 5 host bits (2^5 = 32) and a /27 subnet mask. A /27 mask is 255.255.255.224. From a /24 network, this creates 8 subnets, more than the required three, and each subnet provides exactly 30 usable host addresses. The other options either provide too many hosts per subnet or too few.
Question 233
After installing a new 6E wireless router in a small office, a technician notices that some wireless devices are not able to achieve the rated speeds. Which of the following should the technician check to troubleshoot the issue? (Choose two.)
A. Client device compatibility
B. Back-end cabling
C. Weather phenomena
D. Voltage source requirements
E. Interference levels
F. Processing power
Show Answer
Correct Answer: A, E
Explanation: Wi‑Fi 6E performance depends on client support for the 6 GHz band; devices that are not compatible will fall back to slower standards or bands. In addition, wireless interference and signal conditions can prevent devices from reaching rated speeds, so checking interference levels is essential.
Question 234
Which of the following is the OSI model layer that uses a connectionless protocol for packet delivery?
A. Physical
B. Network
C. Transport
D. Application
Show Answer
Correct Answer: B
Explanation: The Network layer (Layer 3) uses connectionless protocols, most notably IP (Internet Protocol). IP forwards packets independently without establishing or maintaining a connection, which is the defining characteristic of connectionless packet delivery.
Question 235
Which of the following OSI model layers can utilize a connectionless protocol for data transmission?
A. Physical
B. Network
C. Transport
D. Application
Show Answer
Correct Answer: C
Explanation: The keyword is *can*. The Transport layer can utilize either connection-oriented protocols (e.g., TCP) or connectionless protocols (e.g., UDP). While the Network layer typically uses connectionless protocols like IP, the question asks which layer *can* utilize a connectionless protocol, making Transport the best single answer.
Question 236
A user’s desk has a workstation and an IP phone. The user is unable to browse the internet on the workstation, but the phone works. Which of the following configurations is required?
A. Voice VLAN
B. Native VLAN
C. Data VLAN
D. Trunk port
Show Answer
Correct Answer: C
Explanation: The IP phone is working, which indicates that the voice VLAN is correctly configured and operational. The workstation’s inability to browse the internet points to an issue with the VLAN used for regular data traffic. A data VLAN is required to carry user workstation traffic and provide internet access. If it is missing or misconfigured, the phone can still work while the workstation cannot.
Question 237
A network administrator needs to deploy a subnet using an IP address range that can support at least 260 devices with the fewest wasted addresses. Which of the following subnets should the administrator use?
A. 172.16.0.0/24
B. 172.25.2.0/23
C. 172.30.1.0/22
D. 172.33.0.0/21
Show Answer
Correct Answer: B
Explanation: The subnet must support at least 260 devices with minimal wasted addresses. A /24 provides only 254 usable IPs, which is insufficient. A /23 provides 512 total addresses (510 usable), which meets the requirement with the least excess. Larger subnets (/22 and /21) provide far more addresses than needed, resulting in more waste.
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