N10-008 Online Practice Questions and Answers

Correct Answer: C

In a Storage Area Network (SAN), large amounts of data are frequently transferred, which can result in overhead and decreased efficiency. Jumbo frames can be used to reduce overhead and increase efficiency by increasing the maximum transmission unit (MTU) size for a network. By increasing the MTU size, jumbo frames can reduce the overhead associated with transmitting large amounts of data, resulting in improved performance for large data transfers, such as those that occur in a SAN.

Port aggregation (A) combines multiple physical links into a single logical link to increase the bandwidth of a network. Traffic shaping (B) is used to control the flow of data and prioritize certain types of network traffic. Flow control (D) is used to regulate the amount of data that can be transmitted on a network to prevent network congestion. While these technologies can also play a role in improving network efficiency, they are not directly related to reducing overhead in a SAN specifically.

Correct Answer: A

In this scenario, the network administrator should first modify the device's Management Information Base (MIB) on the monitoring system. A MIB is a database used by SNMP to manage and monitor devices in a network. After replacing the firewall, the SNMP MIB on the monitoring system might not be updated to reflect the changes made on the new device, and this might cause some alarms and metrics related to network availability to stop updating.

By modifying the device's MIB on the monitoring system, the administrator can ensure that the monitoring system can communicate properly with the new firewall and receive updated information on network availability. Configuring syslog, using port mirroring, or deploying SMB are all methods of transferring data to the monitoring system but they do not address the root cause of the problem, which is the lack of updated MIB on the monitoring system.

Correct Answer: D

A site-to-site VPN is a type of VPN connection that allows communication between two or more networks. In this case, the internal network of the corporate client would be connected to an external network, such as the internet, using a siteto-site VPN. This would allow the satellite offices to communicate securely with each other and with the headquarters using various ports and protocols.In summary, client-to-site VPN allows a single user to access a network remotely, while site-to-site VPN allows multiple networks to communicate and connect securely as if they were on the same local network.

Correct Answer: B

The technician would MOST likely use a media converter to connect the Cat 6 Ethernet cable to a device that only has LC ports.

Media converters are devices that convert one type of network media to another, such as converting fiber optic signals to copper Ethernet signals. In this case, the media converter would convert the Cat 6 Ethernet cable signals to the fiber

optic signals required by the device's LC ports.

Correct Answer: C

A hot site is the disaster recovery solution that the corporation should implement for its critical system that would cause unrecoverable damage to the brand if it was taken offline. A hot site is a fully operational backup site that can take over

the primary site's functions in case of a disaster or disruption. A hot site has all the necessary hardware, software, data, network connections, and personnel to resume normal operations with minimal downtime. A hot site is suitable for

systems that require high availability and cannot afford any data loss or interruption. References:

https://www.enterprisestorageforum.com/management/disaster-recovery-site/

Correct Answer: B

OSPF stands for Open Shortest Path First and is a link-state routing protocol that uses Dijkstra's algorithm to calculate the lowest cost between routers. OSPF assigns a cost value to each link based on factors such as bandwidth, delay, or

reliability, and builds a map of the network topology. OSPF then uses Dijkstra's algorithm to find the shortest path from each router to every other router in the network1. RIP stands for Routing Information Protocol and is a distance-vector

routing protocol that uses hop count as the metric to find the best path. BGP stands for Border Gateway Protocol and is a path-vector routing protocol that uses attributes such as AS path, local preference, or origin to select the best route.

EIGRP stands for Enhanced Interior Gateway Routing Protocol and is a hybrid routing protocol that uses a composite metric based on bandwidth, delay, load, and reliability.

References: Dijkstra's algorithm - Wikipedia (https://en.wikipedia.org/wiki/Dijkstra%27s_algorithm)

Correct Answer: A

Full-tunnel VPN: In a full-tunnel VPN configuration, all of the user's internet traffic, regardless of destination, is routed through the VPN tunnel to the corporate network. This ensures that all communication is encrypted and secured, even when the user is accessing the internet from public or untrusted networks. While this level of security is ideal for protecting sensitive data, it can result in higher bandwidth usage due to routing all traffic through the VPN.

Benefits of Full-tunnel VPN for the scenario described:

Highest Security: All traffic is encrypted and protected, making it the most secure option for users who frequently travel and connect to various networks, including public Wi-Fi.

Correct Answer: D

The ping -t command is used in the Windows command prompt (CMD) to continuously ping a target IP address or domain name until the command is manually stopped by the user. The -t option essentially creates an ongoing loop of ping requests, providing a real-time display of round-trip times and potential packet loss. This can be useful for monitoring network stability and diagnosing intermittent connectivity issues over an extended period.

Correct Answer: C

iperf is a tool that can measure the bandwidth and quality of a network link by generating and transferring TCP or UDP data streams. iperf can report the maximum achievable throughput, packet loss, jitter, and other statistics for a given link.

iperf can be used to test both the uplink and downlink performance of a network link by running it on two endpoints and specifying the direction and duration of the test. iperf can help the engineer verify that the new fiber uplink meets the

throughput requirements for the office network. tcpdump is a tool that can capture and analyze network traffic by filtering and displaying packets based on various criteria. tcpdump can help the engineer troubleshoot network problems,

monitor network activity, and inspect packet contents, but it cannot measure the throughput or quality of a network link.

ping is a tool that can test the reachability and latency of a network host by sending and receiving ICMP echo packets. ping can help the engineer check if the new fiber uplink is connected and responsive, and how long it takes for packets to

travel between the endpoints, but it cannot measure the throughput or quality of a network link. netstat is a tool that can display information about the network connections, routing tables, interfaces, and protocols on a network host. netstat

can help the engineer view the status and details of the network connections using the new fiber uplink, but it cannot measure the throughput or quality of a network link.

Correct Answer: C