Page 1 out of 20. Viewing questions 1-15 out of 287
Question 1
Which of the following statements regarding buffer overflow attacks is false?
A. The buffer overflow attack indicates that an attacker uses defects of memory operations of the software system and runs attack codes with high operation rights.
B. The buffer overflow attack is irrelevant to the OS vulnerabilities and architecture.
C. The buffer overflow attack is the most common attack of the software system.
D. The buffer overflow attack is an application-layer attack.
Answer:
B
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Question 2
On a MPLS network, switches can distribute labels. Which of the following statements regarding label distribution control mode is true?
A. The downstream LSR determines a label bound to a specific FEC, and then notifies the upstream LSR.
B. In Downstream on Demand (DoD) mode, an LSR distributes a label to an FEC without having to receive the label request message from its upstream LSR.
C. In Downstream Unsolicited (DU) mode, an LSR distributes a label to an FEC after receiving a label request message from its upstream LSR.
D. The upstream LSR and downstream LSR with label advertisement adjacencies may use different label distribution control modes.
Answer:
A
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Question 3
Which command is used to enable association between BFD and OSPF on all interfaces?
A. bfd enable
B. bfd all-interface enable
C. all-interface bfd enable
D. undo bfd all-interface disable
Answer:
B
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Question 4
Which of the following statements regarding the VRRP master is false?
A. The VRRP master periodically sends VRRP packets.
B. The VRRP master uses the virtual MAC address to respond to ARP Request packets destined for the virtual IP address.
C. The VRRP master forwards IP packets destined for the virtual MAC address.
D. Even if the router becomes the master, the backup router with a higher priority preempts to be the master.
Answer:
D
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Question 5
Which of the following are included in the full lifecycle guest management of the Agile Controller? (Multiple Choice)
A. Account registration
B. Account approval and distribution
C. Account authentication
D. Account audit and deregistration
Answer:
ABCD
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Question 6
Which of the following command is used to apply the traffic policy to an interface on an AR router?
A. traffic-policy pi inbound
B. traffic classifier pi inbound
C. traffic behavior pi inbound
D. services-policy pi inbound
Answer:
A
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Question 7
A 32-bit MPLS header consists of a 20-bit label used for packet forwarding; A 3-bit EXP field that identifies the IP packet priority; A 1-bit bottom-of-stack flag that identifies the last label; And an 8- bitTTL field. Which statement regarding the TTL field is true?
A. This field is used to prevent packet forwarding loops, similar to the TTL field in an IP header.
B. This field is used for label management.
C. This field used to control the upstream device in label distribution.
D. This field limitation the LSR.
Answer:
A
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Question 8
In vAR application scenarios, which functions of the AR Router can be virtualized on a server? (Multiple Choice)
A. Firewall
B. VoIP
C. NAT
D. VPN
Answer:
ABCD
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Question 9
On a carrier's MPLS VPN network, PE1 and PE2 transmit data packets between VPNs. After PE1 receives VPN route 172.16.1.0/24 from a client, it converts the route into a VPNv4 route and distributes label 1027 to the packet. After the packet arrives at PE2, PE2 distributes label 1025 to the packet. When a client on PE2 accesses this route, what are the outer and inner labels in the packet transmitted over the carrier network?
A. Outer label: 1027; inner label: 1025
B. Outer label: 1025; inner label: 1025
C. Outer label: 1027; inner label: 1027
D. Outer label: 1025; inner label: 1027
Answer:
D
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Question 10
What are the common queue scheduling technologies? (Multiple Choice)
A. FIFO
B. LR
C. WRR
D. CIR
E. CQ
F. WFQ
Answer:
ACEF
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Question 11
Which of the following statements regarding the DSCP priority is false?
A. The first 6 bits of the ToS field (leftmost 6 bits) mark different types of services, namely, DSCP priority.
B. The DSCP priority can be used to classify traffic into 32 types.
C. Each DSCP priority corresponds to a Behavior Aggregate (BA), and a PHB can be specified for each BA.
D. You can use some QoS mechanisms to implement PHB.
Answer:
B
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Question 12
Which of the following statements regarding the DiffServ service model is false?
A. You can set QoS parameters in the IP packet header to notify a network node of QoS requirements.
B. Each device along the transmission path obtains the service requirements type of packets by analyzing the IP packet header.
C. During DiffServ implementation, the downstream router must classify packets.
D. The DiffServ service model is based on packet flows.
Answer:
C
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Question 13
Which of the following device discovery modes are supported by Huawei eSight network management software? (Multiple Choice)
A. By specified IP address
B. By specified IP address segment
C. By specified product model
D. Batch import by Excel file (containing specified IP addresses)
Answer:
ABD
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Question 14
Administrators can query the online user status on eSight to check whether unauthorized users exist, improving the security monitoring capabilities.
A. TRUE
B. FALSE
Answer:
A
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Question 15
When the IP address of an interface on a firewall is pinged/ ping packets are processed by the internal module of the firewall but are not forwarded,