Which QoS mechanism is used to prioritize certain types of traffic over others?
- Weighted Fair Queuing (WFQ)
- First-Come, First-Served (FCFS)
- Last-In, First-Out (LIFO)
- Round Robin
Weighted Fair Queuing (WFQ) is a QoS mechanism used to prioritize certain types of traffic over others based on assigned weights.
For outdoor installations where cables are exposed to environmental elements, what type of cable is generally preferred?
- Coaxial Cable
- Direct Burial Cable
- Plenum Cable
- Twisted Pair Cable
Direct burial cables are generally preferred for outdoor installations where cables are exposed to environmental elements.
To improve data transfer efficiency in WAN, _____ is a method that involves storing copies of frequently accessed data.
- Caching
- Encryption
- QoS
- Tunneling
To improve data transfer efficiency in WAN, caching is a method that involves storing copies of frequently accessed data.
An organization needs to implement a system to securely authenticate responses to DNS queries to prevent cache poisoning. What technology should they implement?
- DNS Over HTTPS (DoH)
- DNS Security Extensions (DNSSEC)
- DNS Cryptography
- DNS Spoofing
DNS Security Extensions (DNSSEC) is a technology used to secure DNS responses and prevent cache poisoning attacks.
The process of modifying the source and destination IP addresses of IP packets during transit across a traffic routing device is known as __________.
- ARP (Address Resolution Protocol)
- DHCP (Dynamic Host Configuration Protocol)
- ICMP (Internet Control Message Protocol)
- NAT (Network Address Translation)
Network Address Translation (NAT) is the process of modifying the source and destination IP addresses of IP packets during transit across a traffic routing device.
What is the impact of configuring PortFast on a switch port connected to an end device?
- Allows the port to immediately transition to the forwarding state
- Binds the MAC address to the switch port
- Disables spanning tree on the port
- Enables rapid spanning tree convergence
Configuring PortFast on a switch port connected to an end device allows the port to immediately transition to the forwarding state, eliminating the delay introduced by spanning tree protocol.
Which type of DNS record is used to translate domain names into IP addresses?
- A Record
- CNAME Record
- PTR Record
- MX Record
An A Record (Address Record) is used to translate domain names into IP addresses.
In an IPv4 network, what is the primary reason for implementing CIDR (Classless Inter-Domain Routing)?
- To improve security by assigning unique IP addresses to each device.
- To overcome the limitations of the traditional class-based IP addressing scheme and efficiently allocate IP addresses.
- To reduce the size of the routing tables and slow down the growth of the global routing table.
- To simplify subnetting and make it easier for administrators to manage IP address assignments.
CIDR is implemented in IPv4 networks to overcome the limitations of the traditional class-based IP addressing scheme and efficiently allocate IP addresses.
In a QoS-enabled network, what is the purpose of implementing Traffic Shaping?
- Traffic Shaping is used to limit the rate of outgoing traffic to prevent network congestion and maintain a steady flow of data.
- Traffic Shaping increases the priority of critical traffic, ensuring faster delivery.
- Traffic Shaping is primarily used to block unwanted traffic from entering the network.
- In a QoS-enabled network, Traffic Shaping is not a relevant concept.
Traffic Shaping is implemented to control the rate of outgoing traffic, preventing network congestion and maintaining a steady flow of data.
In troubleshooting, what is the significance of establishing a baseline performance measure?
- It helps to identify the root cause of the issue
- It provides a reference point for normal network behavior
- It speeds up the troubleshooting process
- It is not relevant in troubleshooting
Establishing a baseline performance measure is significant because it provides a reference point for normal network behavior, making it easier to identify deviations and potential issues.
Which WAN technology provides dedicated, high-bandwidth connectivity using fiber-optic cable?
- MPLS
- Frame Relay
- DSL
- SONET/SDH
SONET/SDH (Synchronous Optical Networking/Synchronous Digital Hierarchy) provides dedicated, high-bandwidth connectivity using fiber-optic cable.
What feature should be enabled on network devices to secure access and track changes made by different users?
- VLANs
- Port Security
- SNMP
- AAA (Authentication, Authorization, and Accounting)
AAA (Authentication, Authorization, and Accounting) should be enabled on network devices to secure access and track changes made by different users.