A network technician is deploying a new machine in a small branch office that does not have a DHCP server. The new machine automatically receives the IP address of 169.254.0.2 and is unable to communicate with the rest of the network. Which of the following would restore communication?
Correct Answer:
A
A static entry is the best option to restore communication for the new machine in a small branch office that does not have a DHCP server. A static entry means manually configuring the IP address, subnet mask, default gateway, and DNS server for the network adapter of the machine. A static entry ensures that the machine has a valid and unique IP address that matches the network configuration and can communicate with the rest of the network.
The new machine automatically receives the IP address of 169.254.0.2 because it uses APIPA (Automatic Private IP Addressing), which is a feature that enables computers to self-assign an IP address when a DHCP server is not available. However, APIPA only works for local communication within the same subnet, and does not provide a default gateway or a DNS server. Therefore, the new machine is unable to communicate with the rest of the network, which may be on a different subnet or require a gateway or a DNS server to access.
The other options are not related to restoring communication for the new machine. ARP table is a cache that stores the mapping between IP addresses and MAC addresses for the devices on the network. NTP specification is a protocol that synchronizes the clocks of the devices on the network.
References:
✑ CompTIA A+ Certification Exam Core 2 Objectives1
✑ CompTIA A+ Core 2 (220-1102) Certification Study Guide2
✑ What is APIPA (Automatic Private IP Addressing)? - Study-CCNA3
✑ How to Configure a Static IP Address in Windows and OS X4
An administrator is designing and implementing a server backup system that minimizes the capacity of storage used. Which of the following is the BEST backup approach to use in conjunction with synthetic full backups?
Correct Answer:
D
Incremental backups are backups that only include the changes made since the last backup, whether it was a full or an incremental backup. Incremental backups minimize the capacity of storage used and are often used in conjunction with synthetic full backups, which are backups that combine a full backup and subsequent incremental backups into a single backup set.
Reference: CompTIA A+ Core 2 Exam Objectives, Section 3.3
Which of the following should be documented to ensure that the change management plan is followed?
Correct Answer:
A
The scope of the change is one of the elements that should be documented to ensure that the change management plan is followed. The scope of the change defines the boundaries and limitations of the change, such as what is included and excluded, what are the deliverables and outcomes, what are the assumptions and constraints, and what are the dependencies and risks. The scope of the change helps to clarify the expectations and objectives of the change, as well as to prevent scope creep or deviation from the original plan. The scope of the change also helps to measure the progress and success of the change, as well as to communicate the change to the stakeholders and the team
A desktop technician has received reports that a user's PC is slow to load programs and saved files. The technician investigates and discovers an older HDD with adequate free space. Which of the following should the technician use to alleviate the issue first?
Correct Answer:
B
Disk Defragment is a tool that can be used to improve the performance of a hard disk drive (HDD). HDDs store data in sectors and clusters on spinning platters. Over time, as data is written, deleted, and moved, the data may become fragmented, meaning
that it is spread across different locations on the disk. This causes the HDD to take longer to access and load data, resulting in slower performance. Disk Defragment consolidates the fragmented data and rearranges it in a contiguous manner, which reduces the seek time and increases the speed of the HDD. Disk Management, Disk Cleanup, and Device Manager are not tools that can alleviate the issue of slow HDD performance.
A user receives a notification indicating the data plan on the user's corporate phone has reached its limit. The user has also noted the performance of the phone is abnormally slow. A technician discovers a third-party GPS application was installed on the phone. Which of the following is the MOST likely cause?
Correct Answer:
B
The GPS application contains malware. The third-party GPS application is likely the cause of the slow performance of the phone. The application may contain malware that is using up system resources and slowing down the phone. The user should uninstall the application and run a malware scan on the phone1
