H12-221 - HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network)
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For link-state routing protocols, filtering inbound routes cannot block the transmission of link-state information. The filtering effect means that routes cannot be injected into the local routing table but neighbors can still receive complete route state information and calculate complete routes.
Which session is established between BGP peers?
The Internet Group Management Protocol (IGMP) runs between hosts and their immediately neighboring multicast routers.
The BGP community attribute is a well-known mandatory attribute.
The default-route originate command in the RIP protocol advertises a default RIP route to the peers. When using this command, which of the following attributes can be set for the default route?
The vlink-peer command is used to specify a peer IP address for setting up a virtual link.
Which statement about OSPF is false?
DD packets contain headers of all LSAs for periodic LSDB synchronization between OSPF neighbors.
Which of following BGP attributes is used to define a set of prefixes with same properties?
We can have different network segments in an OSPF area. We can also have same network segment in different OSPF areas.
Which of the following statements regarding comparison between ACL and IP-Prefix are true? (Select 2 answers)
Both ACL and IP-Prefix can perform route filtering
ACL can perform data packet filtering and route filtering, but IP-Prefix can only perform route filtering
Unlike Stub area, an NSSA supports Type-5 LSAs.
Why is BGP run by core routers in transit AS?
To ensure the transmission of data packets to the external destination addresses
Which of the following route prefixes match the IP-prefix-filter given below? "ip ip-prefix test index 10 permit 10.0.0.0 16 greater-equal 24 less-equal 28" (Select 3 answers)
An ACL is a series of orderly rules composed of permit deny clauses. Which of the following attributes cannot be used for defining an ACL rule?
Which of the following statements regarding the Reverse Path Forwarding (RPF) mechanism are true? (Select 2 answers)
A router discards the received multicast packets if the RPF check fails.
The RPF mechanism has two functions: It prevents multicast routing loops and the forwarding of redundant multicast packets.
Which of the following statements are correct regarding BGP attributes? (Select 2 answers)
Till now, there are 16 BGP attributes
BGP attribute can be extended to 256 types
What is the default LOCAL_PREF and PREFERRED-VALUE assigned to routes in a VRP system?
Which statements regarding the range of AS number are true? (Select 3 answers)
If 2-byte AS values are supported, the private AS number ranges from 64512 to 65535.
If 2-byte AS values are supported, the AS number ranges from 1 to 65535.
If 4-byte AS values are supported, then the 4-byte AS number is in the x.y format. Here, "x" and "y" are integers ranging from 1 to 65535 and 0 to 65535 respectively.
Which of these addresses are reserved for use by multicast applications?
An IP address 192.168.13.175 with the subnet mask 255.255.255.240 can be assigned to a device.
How many hosts are available per subnet if you apply a /21 mask to the class B network?
BGP is an inter-AS routing protocol. Which statements regarding BGP are true? (Select 3 answers)
BGP adopts a reliable transmission layer protocol,
BGP supports incremental route updates,
BGP supports various routing policies.
BGP is an exterior gateway protocol which runs between ASs. It focuses on the control of route propagation and selection of optimal routes rather than discovery and calculation of routes.
Which of the following statements about OSPF neighbor state transition are true? (Select 3 answers)
The neighbor state transitions from "Loading" to "Full" when a LoadingDone event occurs.
The neighbor state transitions from the "Exchange" to "Full" when an ExchangeDone event occurs.
The neighbor state transitions from "Exchange" to "Loading when an ExchangeDone event occurs.
How does a BGP router process a received route whose next hop is unreachable?
The BGP router accepts the route and adds it to the BGP routing table. This route, however, is neither preferred nor added to the IP routing table for packet forwarding.
How does an IGMP router maintain group memberships on a network? (Select 2 answers)
The router maintains a timer for each group membership which it refreshes for hosts that send report messages and deletes the group membership of hosts that do not.
The router periodically sends Query messages. After a receiver host receives the Query message, the receiver host sends a Report message.
What is the mask value for the network 126.96.36.199/19?
A company has four departments. Department A has SO PCs, Departments B and C both have 20 PCs, and Department D has 30 PCs. Assuming the IP address 192.168.1.0/x is used, which of the following statements are true if the VLSM technology is employed for subnetting? (Select 2 answers)
Plan subnet 192.168.1.0/25 for Department A. The range of host addresses is 1 to 126.
Plan subnet 192.168.1.160/27 for Department C. The range of host addresses is 161 to 190.
Given a Class B network 188.8.131.52 with the mask 255.255.255.192, what is the maximum number of subnets that can be created, and what is the maximum number of hosts available within each created subnet?
Which of the following BGP attributes cannot be advertised to other neighboring AS?
ACLs can match routing information or data packet addresses to filter unmatched routing information or data packets.
Which statements regarding the local preference attribute are true? (Select 2 answers)
Based on BGP route selection rules, the local preference has a lower priority than the preferred- value which means BGP compares local preference of routes after comparing preferred-values.
The local preference selects an exit point for data from the local AS
Which of the fallowings are OSPF packet types? (Select 3 answers)
Which of the following statements are true if a BGP peer is configured with "multiple" route selection tools for route filtering? (Select 2 answers)
The routes received from the BGP peer are first matched with IP-prefix and then with route-policy.
The routes sent to the BGP peer are first matched with IP-prefix and then with route-policy.
Which of the following multicast protocols can generate multicast distribution trees?
Which of the following is the address range assigned by IANA for SSM service in IPv4?
You are using the address space 172.28.100.0/24. If the subnet mask 172.28.100.0/30 is used to subnet this address space to serve WAN links, how many total subnets can the address space be divided into?
Which of the following route entries matches ACL 2001 that is defined below? 184.108.40.206/8,220.127.116.11/16,18.104.22.168/24,22.214.171.124/24,126.96.36.199/24, 188.8.131.52/24,184.108.40.206/24,220.127.116.11/24 ACL 2001 Basic ACL 2001,1 rule Ad's step is 5 rule 0 permit source 18.104.22.168 0.0.254.255
Which port number is used by BGP to establish a TCP connection?
Which of the following statements regarding a multicast distribution tree are true? (Select 3 answers)
Multicast distribution trees are classified into two types: SFT and RPT.
The PIM-SM protocol can generate both RFTs and SPTs.
The PIM-55M protocol can generate only SFTs.
What is the maximum number of hosts that a network segment 192.168.2.16/28 can support?
The most remarkable characteristic of OSPF is that it can support the link-state algorithm.
The import-route limit" command is used to set a maximum number of imported routes that can be imported into an OSPF routing process.
Which of these is a valid VLSM subnet obtained by subnetting the network address 172.29.100.0/16?
Routes 22.214.171.124/24, 126.96.36.199/24, 188.8.131.52/24, and 184.108.40.206/24 can be summarized into route 220.127.116.11/21.
What is the default network mask length of 18.104.22.168?
Which of the following is a private AS number?
Which of the following situations will occur when the command "multicast bad balance" is configured? (Select 3 answers)
If there exists no unicast equal-cost routes, multicast load balancing fails.
If group address-based load splitting is employed, balanced distribution of entries over equal-cost routes cannot be ensured due to hash function limitations.
During multicast load splitting, traffic may not be balanced among equal-cost routesbecause multicast load balancing is based on multicast entries not multicast data packets.
Which of the following statements regarding stub areas is false?
Any area can be configured as a Stub area.
Which of the following describes the relationship between BGP and AS?
BGP is an EGP used by ASs to exchange routing information with other ASs.