On an OSPFv2 network, a router can run multiple OSPF processes at the same time and advertise one interface network segment into different processes, which are independent of each other.
Answer(s): A
In OSPFv2, a router can run multiple OSPF processes simultaneously. Each process can have its own routing table and can advertise the same interface network segment into different OSPF processes independently. This allows for flexibility in managing multiple OSPF instances on the same router, each with its own configuration and routing information.
FILL BLANKOn an OSPF network, the default interface cost is calculated by dividing the default reference value by the actual interface bandwidth. By default, the reference value is _______ Mbit/s. (Enter only digits.)
The default reference value for OSPF interface cost calculation is 100 Mbit/s. This value is divided by the actual interface bandwidth to determine the cost of the interface.
In which of the following scenarios can a neighbor relationship not be established between two directly connected Huawei routers after IS-IS is configured? (Choose all that apply.)
Answer(s): A,B,C
The two routers are Level-1 routers and have different area addresses.This will prevent the establishment of a neighbor relationship because in IS-IS, Level-1 routers must share the same area address to communicate with each other.One router is a Level-1 router, and the other router is a Level-2 router.A Level-1 router can only form a neighbor relationship with another Level-1 router, and a Level-2 router can only form a neighbor relationship with another Level-2 router. Therefore, a Level-1 router and a Level-2 router cannot directly form a neighbor relationship.The two routers are Level-2 routers and have different area addresses.This will prevent a neighbor relationship because Level-2 routers must share the same area address to establish a neighbor relationship.
IS-IS and OSPF are both link-state IGPs, but they have some differences. Which of the following statements are true about the comparison between IS-IS and OSPF? (Choose all that apply.)
Answer(s): A,D
IS-IS has higher scalability than OSPF and supports network layer protocols including IPv4 and IPv6.IS-IS is generally considered more scalable than OSPF because it was designed to handle larger networks and can support multiple network layer protocols, including IPv4 and IPv6.IS-IS supports more network types than OSPF.IS-IS supports more network types, including point-to-point, broadcast, and NBMA (Non-Broadcast Multi- Access). OSPF typically uses fewer network types, primarily point-to-point and broadcast. IS-IS is more flexible in handling different types of network topologies.
FILL BLANKCompared with OSPF, IS-IS has higher scalability because IS-IS uses the _____ structure to construct packets.(Enter the acronym in uppercase.)
IS-IS uses the CLNS (Connectionless Network Service) structure to construct packets, which contributes to its higher scalability compared to OSPF. CLNS is a more flexible and efficient method for packet construction and forwarding, making IS-IS suitable for large-scale networks. OSPF, on the other hand, relies on the IP-based structure, which can limit its scalability in very large networks.
Which of the following attributes must be carried when BGP sends route update messages? (Choose all that apply.)
Answer(s): C,D
Next_Hop: This attribute must be carried in BGP route update messages. It indicates the IP address of the next-hop router to reach the destination network.AS_Path: This attribute is mandatory in BGP route updates. It lists the ASs (Autonomous Systems) that the route has traversed, which helps prevent routing loops and provides information about the path to the destination.
A Layer 2 switch supports multiple types of Ethernet interfaces, and each interface has a default VLAN ID regardless of the interface type. On a Huawei switch, the default VLAN ID of an interface is 11.
Answer(s): B
On a Huawei switch, the default VLAN ID for an interface is typically VLAN 1, not VLAN 11. The default VLAN ID for an interface is usually set to 1 unless it is explicitly configured to use a different VLAN.
A company has a stack consisting of three switches that are running properly. The master switch restarts due to a fault. Given this, which of the following statements are true? (Choose all that apply.)
Answer(s): B,D
Before the restart of the original master switch is complete, the original slave switch is specified as the new standby switch.Before the original master switch restarts completely, the system will reassign roles, and the original slave switch will be designated as the new standby.Before the restart of the original master switch is complete, the original standby switch becomes the new master switch.During the restart process of the original master switch, the system will promote the original standby switch to the new master switch to maintain the stack's functionality.
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