A network engineer needs to implement a routing protocol that can scale to a large network with diverse topologies and support rapid convergence. Which protocol should they choose?
- BGP
- EIGRP
- OSPF
- RIP
OSPF (Open Shortest Path First) is a link-state routing protocol suitable for large networks with diverse topologies, providing scalability and rapid convergence.
A company needs to restrict access to its internal servers from the internet, allowing only web traffic. What type of ACL should be implemented?
- Extended ACL
- Reflexive ACL
- Standard ACL
- Time-Based ACL
An extended ACL allows filtering based on source and destination IP addresses, as well as specific protocols like web traffic (HTTP).
How does an extended ACL differ from a standard ACL in terms of its capabilities?
- Allows or denies traffic based on the protocol used
- Applies only to routers
- Filters traffic based on source and destination IP address, as well as protocols and ports
- Filters traffic based on source or destination IP address only
An extended ACL differs from a standard ACL by filtering traffic based on source and destination IP address, as well as protocols and ports.
In a scenario where a company needs to transmit multicast traffic over an IP network that does not support it natively, which tunneling technique would be most appropriate?
- L2TP
- MPLS
- GRE
- PPTP
To transmit multicast traffic over an IP network that does not support it natively, GRE (Generic Routing Encapsulation) tunneling is often the most appropriate technique.
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.
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.
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.
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.
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 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.