Which of the following is the greatest advantage of maintaining a cold DR site compared to other DR sites?
A. Redundancy
B. Availability
C. Security
D. Cost
Show Answer
Correct Answer: D
Explanation: A cold DR site has minimal or no active infrastructure and staffing until a disaster occurs, making it significantly cheaper to maintain than hot or warm sites. Its primary advantage is lower cost, not availability, redundancy, or security.
Question 148
Which of the following should a company implement in order to share a single IP address among all the employees in the office?
A. STP
B. BGP
C. PAT
D. VXLAN
Show Answer
Correct Answer: C
Explanation: The requirement is to allow multiple employees to share a single IP address. Port Address Translation (PAT), a form of NAT, enables many internal hosts to use one public IP by translating each session to a unique source port. STP prevents Layer 2 loops, BGP is an interdomain routing protocol, and VXLAN is a Layer 2 overlay technology; none of these provide IP address sharing.
Question 149
A technician is deploying new networking hardware for company branch offices. The bridge priority must be properly set. Which of the following should the technician configure?
A. Spanning tree protocol
B. Jumbo frames
C. Perimeter network
D. Port security
Show Answer
Correct Answer: A
Explanation: Bridge priority is a parameter used by Spanning Tree Protocol (STP) to elect the Root Bridge in a switched network. Configuring STP allows the technician to set bridge priorities appropriately. The other options do not involve bridge priority or root bridge election.
Question 150
A network administrator upgraded the wireless access points and wants to implement a configuration that will give users higher speed and less channel overlap based on device compatibility. Which of the following will accomplish this goal?
A. 802.1X
B. MIMO
C. ESSID
D. Band steering
Show Answer
Correct Answer: D
Explanation: Band steering encourages dual-band capable clients to connect to the 5 GHz band instead of 2.4 GHz. The 5 GHz band supports higher data rates and has more non-overlapping channels, resulting in higher speeds and less interference based on device compatibility.
Question 151
Which of the following explains what happens if a packet is lost in transit when using UDP?
A. The data link layer will recognize the error and resend the packet.
B. IP uses the TTL field to track packet hops and will resend the packet if necessary.
C. If the sender does not receive a UDP acknowledgement, the packet will be resent.
D. Some applications will recognize the loss and initiate a resend of the packet if necessary.
Show Answer
Correct Answer: D
Explanation: UDP is a connectionless and unreliable transport protocol. It provides no acknowledgements, retransmissions, or recovery for lost packets. If a packet is lost in transit, UDP itself does nothing. Only higher-layer applications that use UDP may detect the loss (for example via timeouts or sequence numbers) and choose to retransmit if needed. Therefore, the correct explanation is that some applications handle the loss themselves.
Question 152
A network administrator installs new cabling to connect new computers and access points. After deploying the equipment, the administrator notices a few of the devices are not connecting properly. The administrator moves the devices to a different port, but it does not resolve the issue. Which of the following should the administrator verify next?
A. Power budget
B. Device requirements
C. Port status
D. Cable termination
Show Answer
Correct Answer: D
Explanation: The problem began after new cabling was installed, and moving devices to different switch ports did not resolve it, which effectively rules out port-specific issues. When multiple devices fail after a cabling change, the most likely cause is a physical-layer problem such as improper cable termination (bad punchdowns, split pairs, or miswiring). Power budget and device requirements are less likely to affect both computers and access points in this scenario.
Question 153
While deploying a new fleet of computers on a DHCP network, a network administrator notices that new computers cannot connect to the internet. Which of the following is most likely the problem?
A. Incorrect default gateway
B. Address pool exhaustion
C. Duplicate IP address
D. Incorrect subnet mask
Show Answer
Correct Answer: B
Explanation: Only newly deployed computers are affected, which points to a DHCP-related issue rather than a global network misconfiguration. If the DHCP address pool is exhausted, new machines cannot obtain an IP address (often falling back to APIPA), preventing internet access. An incorrect default gateway or subnet mask would typically affect all clients receiving that configuration, not just new ones.
Question 154
Which of the following can help prevent unauthorized modifications to hardware when designing an MDF closet?
A. Lockable cabinets
B. Uninterruptable power supply
C. Port security
D. Microsegmentation
Show Answer
Correct Answer: A
Explanation: Preventing unauthorized modifications to hardware in an MDF closet is primarily a physical security concern. Lockable cabinets restrict physical access to network devices, preventing tampering or unauthorized changes. The other options address power reliability or logical/network security, not physical hardware access.
Question 155
After a networking intern plugged in a switch, a significant number of the users in a building lost connectivity. Which of the following is the most likely root cause?
A. VTP update
B. Port security issue
C. LLDP misconfiguration
D. Native VLAN mismatch
Show Answer
Correct Answer: A
Explanation: Plugging in a new switch causing widespread, immediate loss of connectivity is a classic symptom of a VTP problem. If the intern connected a switch running VTP in server mode with a higher configuration revision number, it could propagate its VLAN database to the rest of the VTP domain. This can delete or alter existing VLANs across multiple switches, disconnecting many users at once. Port security, LLDP issues, or a native VLAN mismatch are typically limited in scope and would not usually impact a large portion of a building simultaneously.
Question 156
Which of the following used to store and deliver content to clients in a geographically distributed manner using edge servers?
A. Load balancer
B. CDN
C. DNS server
D. SAN
Show Answer
Correct Answer: B
Explanation: A Content Delivery Network (CDN) uses geographically distributed edge servers to cache, store, and deliver content closer to end users, reducing latency and improving performance.
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