In a network, which device operates at the data link layer and is used to divide a network into segments?
- Bridge
- Hub
- Router
- Switch
A bridge operates at the data link layer and is used to divide a network into segments, controlling traffic between them.
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.
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.
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.
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.
_________ is a method in QoS that dynamically adjusts the priority of different traffic types based on network conditions.
- Policing
- Shaping
- Queuing
- Classification
In QoS, classification is a method that dynamically adjusts the priority of different traffic types based on network conditions.
In complex network environments, ________ is used to reduce the risk of VLAN hopping attacks.
- VLAN Access Control
- VLAN Pruning
- VLAN Segmentation
- VLAN Trunking
VLAN Access Control is used in complex network environments to reduce the risk of VLAN hopping attacks.
BGP uses the _______ attribute to identify the originating Autonomous System of a route.
- AS Path
- Origin
- Next Hop
- Local Preference
BGP uses the Origin attribute to identify the originating Autonomous System of a route.
The process of encapsulating data with necessary protocol information at each OSI layer is known as _______.
- Encapsulation
- Fragmentation
- Framing
- Segmentation
The process of encapsulating data with necessary protocol information at each OSI layer is known as encapsulation.
To prevent unauthorized access, a network administrator can configure _______ on switch ports.
- Port Security
- Routing Protocol
- Subnet Masking
- VLAN Trunking
To prevent unauthorized access, a network administrator can configure Port Security on switch ports.