Which of the following statements regarding BGP peer are false? (Choose all that apply.)
ABGP peers exchange link state information.
BA UDP connection must be established before BGP relationships are established.
CBGP routers support automatic neighbor discovery.
DBGP peers must be configured with MD5 authentication.
When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below? (Choose all that apply.)
[HUAWEI]ip ip-prefix aa index 10 deny 1.1.1.1 24
[HUAWEI]ip ip-prefix aa index 20 permit 1.1.1.1 32
A1.1.1.2/16
B1.1.1.1/24
C1.1.1.1/26
D1.1.1.1/32
Which of the following statements regarding OSPF route summarization commands are true? (Choose all that apply.)
AThe asbr-summary command is executed in the OSPF view.
BThe abr-summary command is executed in the OSPF area view.
Cadvertise is the default parameter of the abr-summary command. That is, if not-advertise is not specified in the abr-summary command, the advertise parameter takes effect by default,
Dnot-advertise is the default parameter of the abr-summary command. That is, if advertise is not specified in the abr-summary command, the not-advertise parameter takes effect by default.
Which of the following statements regarding OSPF is true?
AOSPF does not have an acknowledgement mechanism. Therefore, OSPF relies on the upper-layer protocol, TCP, for acknowledgement.
BOSPF performs LSDB update every 30 minutes.
COSPF uses the Bellman-Ford algorithm, and each router independently runs this algorithm.
DOSPF floods an LSU packet at an interval of 5s.
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Which of the following statements regarding the OSPF protocol is false?
AEach OSPF router uses only one Router-LSA to describe the local active connection status of an area.
BRouting information can be advertised only between backbone and non-backbone areas and cannot be advertised directerly between non-backbone areas.
CRouter-LSA describes four connection types: P2P, TransNet, SubNet, and virtual link.
DLink State ID in a Type 3 LSA indicates the router ID of an ABR.
As shown in the figure, the stateful inspection firewall forwards the packet because the packet matches the session status of the firewall.
ATRUE
BFALSE
On an IS-IS network, each device needs to be configured with a network entity title, which consists of three parts, each containing different fields. Which of the following fields are contained in the Area Address part? (Choose all that apply.)
AHigh Order DSP
BAPI
CIDI
DSystem ID
On a network, some switches are enabled with RSTP and some switches are enabled with STP. What will happen? (Choose all that apply.)
AA Huawei switch changes from RSTP to STP. After the STP-enabled switch is removed from the network, the RSTP-enabled switch can be moved back to the RSTP mode.
BA Huawei switch changes its mode from STP to RSTP. After the RSTP-enabled switch is removed from the network, the STP-enabled switch can be moved back to the RSTP mode.
CSTP and RSTP is compatible each other, but the rapid convergence of RSTP is unavailable.
DSTP and RSTP calculation are performed independently.
In PIM-DM, which of the following processes are involved in SPT establishment? (Choose all that apply.)
APrune
BGraft
CFlooding
DState-refresh
Which of the following protocols are multi-channel protocols? (Choose all that apply.)
AH.323
BFTP
CTelnet
DSMTP
Which command is used to configure the VRRP preemption delay?
Avrrp vrid 1 timer delay 20
Bvrrp vrid 1 preempt-delay 20
Cvrrp vrid 1 preempt-mode timer delay 20
Dvrrp vrid 1 preempt-timer 20
This configuration is the part of RTA configuration. Which of the following statements regarding the configuration are true? (Choose all that apply.)
[RTA]ospf 100
[RTA-ospf-100]silent-interface GigabitEthernet 1/0/0
ARTA cannot establish a neighbor relationship with the neighbor that this interface is directly connected to.
BGigabitEthernet 1/0/0 is prohibited from sending OSPF packets.
CDirect routes of GigabitEthernet 1/0/0 can still be advertised.
DThis interface cannot send Hello packets.
When the MTUs of two interfaces connecting two routers in a broadcast network do not match, which of the following statements of two routers regarding OSPF neighbor state change is true?
AThe OSPF neighbor state remains Init.
BThe OSPF neighbor state remains Exstart.
CThe OSPF neighbor state can be Full.
DThe OSPF neighbor state remains 2-way.
A forwarding information database (FIB) can directly guide packet forwarding on a router.
ATRUE
BFALSE
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows advertising routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
ATRUE
BFALSE
Which of the following statements regarding OSPF packets is false?
ADD packets contain all LSA information and can be used to periodically synchronize LSOB information between neighbors.
BHello packets are used to discover and maintain OSPF neighbor relationships and also can be used to elect DR and BDR on broadcast and NBMA networks.
CTwo routers must send Hello packets at the same interval. Otherwise, they cannot establish an OSPF neighbor relationship.
DDD packets carry LSA header information to describe link state summary information.
Which of the following statements regarding OSPF neighbor relationship and adjacency is true?
ANot all neighbors can establish adjacencies.
BNeighbor relationships are selected from adjacencies to exchange routing information.
COSPF routers must establish an adjacency before exchanging information.
DAdjacencies are maintained using OSPF DD packet
Which of the following statements regarding different LSA types is false?
ALS Update packets contain complete LSA information.
BLS Ack packets contain complete LSA information.
CLS Request packets contain only LS Type, LS ID, and Advertising Rooter.
DDD packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number.
Which of the following statements about IS-IS Hello packets are true? (Choose all that apply.)
ALevel-1 LAN IIH packets do not contain the System ID field.
BP2P IIH packets and LAN IIH packets are exactly the same.
CP2P IIH packets do not contain the Priority field.
DLevel-1 LAN IIH packets are sent in multicast mode.
Which cost types are supported in IS-IS? (Choose all that apply.)
Adefault
Bwide
CToS
DNarrow
Two Level-1 routers in different areas can establish a neighbor relationship.
ATRUE
BFALSE
Which of the following attributes must be carried in an Update message?
Alocal-Pref
BMED
CAS_Path
DPrefVal
Which of the following statements about the AC's mobility group are false? (Choose all that apply.)
ASTAs can roam only between ACs in the same mobility group.
BThe mobility server must be an AC in the local mobility group.
CA mobility server needs to be specified for member ACs in a mobility group.
DACs in the same mobility group encapsulate and transmit roaming information over the DTLS extended tunnel.
Which of the following statements regarding DR/BDR are false? (Choose all that apply.)
AIn a broadcast network, DR and BDR must be elected. A broadcast network without a DR or BDR cannot operate normally.
BAll DR others establish neighbor relationships with DR and BDR only.
CDR others listen on the multicast address 224.0.0.5.
DDR others listen on the network address 224.0.0.6.
