How does a 'root cause analysis' aid in network troubleshooting?
- Identifies the underlying cause of a network issue
- Reboots the network devices to resolve problems
- Monitors network traffic in real-time
- Updates network protocols to the latest versions
Root cause analysis helps identify the underlying cause of a network issue, allowing for targeted and effective troubleshooting.
To reduce the complexity of the routing table and improve efficiency, network engineers use _________.
- Convergence
- Fragmentation
- Load Balancing
- Summarization
To reduce the complexity of the routing table and improve efficiency, network engineers use summarization. Summarization involves representing a group of routes with a single, summarized route entry.
Which WAN technology is commonly used for connecting different LANs over a long distance, known for its high speed and reliability?
- DSL
- Fiber Optic
- MPLS
- Satellite
MPLS (Multiprotocol Label Switching) is commonly used for connecting different LANs over a long distance due to its high speed and reliability.
When implementing GRE tunnels in a network, what is a critical factor to consider regarding network overhead and performance?
- GRE tunnels introduce additional overhead due to encapsulation, impacting network performance.
- GRE tunnels have no impact on network overhead or performance.
- GRE tunnels decrease overhead, leading to improved network performance.
- GRE tunnels only affect download speed, not upload speed.
Implementing GRE tunnels adds overhead to the network due to encapsulation, impacting overall performance.
Which type of DNS record is crucial for email server verification?
- MX Record
- PTR Record
- CNAME Record
- A Record
The MX (Mail Exchange) record is crucial for email server verification as it specifies the mail servers responsible for receiving emails on behalf of the domain.
A network administrator notices intermittent network connectivity issues. On investigation, it's found that STP configuration might be the cause. What aspect of STP should the administrator inspect first?
- Port Security
- Root Bridge Election
- Trunking
- VLAN Configuration
In case of intermittent connectivity issues, the network administrator should inspect the Root Bridge Election process in STP as it plays a crucial role in determining the topology.
________ cables are used for transmitting analog or digital audio signals from a source to an amplifier.
- Coaxial
- HDMI
- Optical
- RCA
RCA cables are commonly used for transmitting analog or digital audio signals from a source to an amplifier.
In a high-security environment, the IT team needs to ensure that specific devices are allowed network access only through designated switch ports. Which combination of Layer 2 security features can achieve this?
- DHCP Snooping and Port Security
- Port Security and MAC Spoofing
- VLANs and DHCP Snooping
- VLANs and Port Security
Combining DHCP Snooping and Port Security can ensure that specific devices are allowed network access only through designated switch ports, enhancing security in a high-security environment.
When designing a network with multiple routing domains, it's important to plan _________ to ensure efficient routing and prevent routing issues.
- BGP
- OSPF Areas
- Route Filters
- Route Summarization
When designing a network with multiple routing domains, planning OSPF areas is important to ensure efficient routing and prevent routing issues by logically segmenting the network.
How does Weighted Fair Queueing (WFQ) differ from Priority Queueing in QoS?
- WFQ assigns weights to different flows, allowing fair sharing of bandwidth based on priority, while Priority Queueing serves queues based on priority without considering fairness.
- WFQ and Priority Queueing have similar functionalities and do not differ significantly.
- Priority Queueing assigns weights to different flows, allowing fair sharing of bandwidth based on priority, while WFQ serves queues based on priority without considering fairness.
- WFQ and Priority Queueing are two terms for the same QoS mechanism.
Weighted Fair Queueing (WFQ) assigns weights to different flows, allowing fair sharing of bandwidth based on priority. In contrast, Priority Queueing serves queues based on priority without considering fairness.
In _________, each outgoing or incoming request from a specific internal IP address is tracked and matched with a corresponding NAT table entry.
- Dynamic NAT
- NAT Overload
- PAT (Port Address Translation)
- Static NAT
In PAT (Port Address Translation), each outgoing or incoming request from a specific internal IP address is tracked and matched with a corresponding NAT table entry.
Placing an ACL on the _________ of a router can prevent unwanted traffic from traversing the network.
- Egress
- External
- Ingress
- Internal
Placing an ACL on the Egress of a router can prevent unwanted traffic from traversing the network.