CompTIA Network+ Question A-71

Two weeks after installation, a network technician is now unable to log onto any of the newly installed company switches. The technician suspects that a malicious user may have changed the switches’ settings before they were installed in secure areas. Which of the following is the MOST likely way in which the malicious user gained access to the switches?

A. Via SSH using the RADIUS shared secret
B. Via HTTP using the default username and password
C. Via console using the administrator’s password
D. Via SNMP using the default RO community

Correct Answer: B

Explanation:
A new network switch is accessed via HTTP to perform the initial configuration. The username and password used is a factory default.

CompTIA Network+ Question A-69

A technician needs to limit the amount of broadcast traffic on a network and allow different segments to communicate with each other. Which of the following options would satisfy these requirements?

A. Add a router and enable OSPF.
B. Add a layer 3 switch and create a VLAN.
C. Add a bridge between two switches.
D. Add a firewall and implement proper ACL.

Correct Answer: B

Explanation:
We can limit the amount of broadcast traffic on a switched network by dividing the computers into logical network segments called VLANs.
A virtual local area network (VLAN) is a logical group of computers that appear to be on the same LAN even if they are on separate IP subnets. These logical subnets are configured in the network switches. Each VLAN is a broadcast domain meaning that only computers within the same VLAN will receive broadcast traffic.
To allow different segments (VLAN) to communicate with each other, a router is required to establish a connection between the systems. We can use a network router to route between the VLANs or we can use a ‘Layer 3’ switch. Unlike layer 2 switches that can only read the contents of the data-link layer protocol header in the packets they process, layer 3 switches can read the (IP) addresses in the network layer protocol header as well.

CompTIA Network+ Question A-68

A company utilizes a patching server to regularly update their PC’s. After the latest round of patching all of the older PCs with non-gigabit Ethernet cards become disconnected from the network and now require a technician to fix the issue locally at each PC. Which of the following should be done to prevent this issue in the future?

A. Enable automatic rebooting of the pCs after patching is completed
B. Require the patching server to update the oldest PCs off hours
C. Disable automatic driver updates to PCs on the patching server
D. Throttle the connection speed of the patching server to match older PCs

Correct Answer: D

CompTIA Network+ Question A-66

Jane, a system administrator, is troubleshooting an issue with a DNS server. She notices that the security logs have filled up and that they need to be cleared from the event viewer. She recalls this being a daily occurrence. Which of the following solutions would BEST resolve this problem?

A. Increase the maximum log size
B. Log into the DNS server every hour to check if the logs are full
C. Install an event management tool
D. Delete the logs when full

Correct Answer: C

CompTIA Network+ Question A-65

A malicious student is blocking mobile devices from connecting to the internet when other students are in the classroom. Which of the following is the malicious student implementing?

A. Removing the AP from the classroom
B. ACL
C. Jamming
D. Firewall
E. IPS

Correct Answer: C

CompTIA Network+ Question A-64

A facility would like to verify each individual’s identity prior to allowing access to the datacenter. Additionally,the facility would like to ensure that users do not tailgate behind other users. Which of the following would BEST meet these goals?

A. Implement a biometric reader at the datacenter entrance and require passage through a mantrap
B. Implement a security guard at the facility entrance and a keypad on the datacenter entrance
C. Implement a CCTV camera and a proximity reader on the datacenter entrance
D. Implement a biometric reader at the facility entrance and a proximity card at the datacenter entrance

Correct Answer: A

CompTIA Network+ Question A-63

Which of the following 802.11g antennas broadcast an RF signal in a specific direction with a narrow path?

A. Omni-direction
B. Unidirectional
C. Patch
D. Yagi

Correct Answer: B

CompTIA Network+ Question A-62

Which of the following policies would Peter, a user, have to agree to when he brings in his personal tablet to connect to the company’s guest wireless Internet?

A. NDA
B. IRP
C. BYOD
D. SLA

Correct Answer: C