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NEW QUESTION 1
MPLS uses LDP to provide different label distribution modes. Which of the following statements regarding LDP label distribution control modes are false?
- A. LDP label distribution can be controlled in ordered mode
- B. ln ordered mode when an LSR is the origin of a route it can send label mapping messages to the upstream router in
- C. LDP label distribution cannot be controlled in independent mode
- D. ln independent mode an LSR cannot send label mapping messages to the upstream router before it receives label m
Answer: CD
NEW QUESTION 2
The AS_Path attributes take effect within an AS. Therefore, a BGP router will not advertise any Update message receives from an IBGP peer to other IBGP peers.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 3
How is CAPEX defined?
- A. Cost expenditure
- B. Capital expenditure
- C. One-time expenditure
- D. Daily expenditure
Answer: B
NEW QUESTION 4
Which of the following statements regarding IS-IS characteristics are true?
- A. IS-IS supports various area features
- B. IS-IS packet format is simple
- C. IS-IS is suitable for large-capacity route transmits
- D. IS-IS has good scalability
Answer: BCD
NEW QUESTION 5
During configuration of the WRB3 drop profile, the lower drop threshold and upper drop threshold for AF21 traffic are 35 and 90, the lower drop threshold and upper drop threshold for. and the lower drop threshold and upper drop threshold for AF23 traffic are 25 and 90. The maximum drop probability for AF21, AF22, and AF23 traffic is 10%. Before congestion occurs, which type of traffic can obtain bandwidth guarantee?
- A. AF21
- B. AF22
- C. AF23
- D. AF21 AF22 and AF23 traffic
Answer: A
NEW QUESTION 6
The jitter occurs because the E2E delays of data packets in the same flow are different.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 7
Which of the following statements regarding OSPF external route types is false?
- A. OSPF includes type 1 and type 2 external routes
- B. The cost of a Type 1 external route is the addition of the AS external cost and the AS internal cost the cost form a router to an A
- C. The cost of a Type 2 external route is the AS external cost
- D. A Type 2 external route is always preferred over a Type 1 external route when other when other conditions are the same
Answer: D
NEW QUESTION 8
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: D
NEW QUESTION 9
SDN and NFV are essential the same concept and both define network function virtualization.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 10
What are the features of SDN network architecture?
- A. Separated forwarding and control layers centralized control and open interfaces
- B. Separated forwarding and control layers distributed control and open interfaces
- C. Centralized forwarding and control layers centralized control and open interfaces
- D. Separated forwarding and control layers centralized control and closed interfaces
Answer: A
NEW QUESTION 11
which of the following statements regarding multicast are false?
- A. Unicast and broadcast technologies cannot implement point-to-multipoint transmission Only multicast this function
- B. Multicast technology is applicable to most of point-to-multipoint data transmission applications
- C. Multicast technology is based on TCP so it can ensure reliable transmission of packets
- D. Multicast technology can reduces redundant traffic and conserves bandwidth on a network
Answer: A
NEW QUESTION 12
Fast detection technology can rapidly detect communication faults between neighboring devices as soon as possible so that the interrupted
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 13
Upon VRRP group flapping, the vnp vrid timer advertise command is executed on the router to increase the interval for sending VRRP packets backup device to check the State field. It is found that the value of State remains unchanged. Which of the following statements regarding these operations is true?
- A. A small interval for sending VRRP packets may cause status flapping of the backup Device
- B. A large interval for sending VRRP packets may cause status flapping of the backup device
- C. Status flapping of the backup device is irrelevant to the interval for sending VRRP packets
- D. The fault cause is not found and it takes time for the device to recover from the fault
Answer: A
NEW QUESTION 14
For inter zone packet filtering, which traffic is belong to transmitted to outbound direction?
- A. Trusted zone — Untrusted zone
- B. Untrusted zone --Trusted zone
- C. Untrusted zone --DMZ
- D. Trusted zone — Local zone
Answer: A
NEW QUESTION 15
Which command is used to configure the VRRP preemption delay?
- A. vrrp vrid 1preempt-timer20
- B. Vrrp vrid 1 preempt-timer delay 20
- C. vrrp vrid 1timer delay 20
- D. vrrp vrid 1 preempt-delay20
Answer: B
NEW QUESTION 16
Which of the following BGP attributes are well-known mandatory attributes?
- A. Local_Pref
- B. Next_hop
- C. AS_Path
- D. MED
Answer: BC
NEW QUESTION 17
The interface ip address and vrrp virtual ip address can be the same
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 18
To improve Internet egress reliability.an enterprise uses multiple links to connect to different carrier networks, this mode requires attention to both the quality may be affected
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 19
In an OSPF routing domain two routers must be specified as one DR and one BDR in a broadcast or NBMA network with at least two routers.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 20
Which of following tasks need to be completed during the planning stage of a project? (Multiple choice)
- A. Work out the technical design
- B. Know the project background
- C. Determine the model of network devices in the project
- D. Make clear the requirements of network devices in the project E, Plan IP address
Answer: BD
NEW QUESTION 21
After PPP Multilink is configured, data is evenly allocated to member links based on the source and destination addresses.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 22
DHCP snooping is a security feature that can be used to defend against carious attacks, including
- A. Starvation attacks by changing the CHADDR field value
- B. Bogus DHCP server attacks
- C. TCP flag attacks J
- D. Man-in-the-middle attacks and IP/MAC spoofing attacks
Answer: ABD
NEW QUESTION 23
Which of the following route selection tools can be used by other routing protocols in addition to BGP?
- A. route-policy
- B. IP- prefix
- C. as-path-filter
- D. community-filter
Answer: AB
NEW QUESTION 24
Which of the following causes for VRRP group flapping is the most impossible.
- A. The link where VRRP Advertisement packets are transmitted changes form Up to Down frequently
- B. The interval for sending VRRP Advertisement packets is small
- C. Association between VRRP and BF
- D. is configured to implement a rapid master/backup switchover
- E. VRRP packets are discarded randomly because congestion occurs
Answer: C
NEW QUESTION 25
The import-route limit command cannot limit the maximum number of external routes that can be imported into an OSPF process.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 26
Which of the following LSA packets carries master/slave relationship information
- A. Hello packet
- B. D
- C. packet
- D. LSA Update packet
- E. LSA Request packet
Answer: B
NEW QUESTION 27
Which configuration modes are supported by VXLAN?
- A. Virtualization software configuration
- B. SDN controller configuration
- C. SNMP configuration
- D. Automatic configuration
Answer: AB
NEW QUESTION 28
If the dhcp client ip address is not extended after 87.5% of the lease is reached. Which packet is used by the client to extend the ip address lease
- A. DHCP Discover broadcast packet
- B. DHCP Release unicast packet
- C. DHCP Request broadcast packet
- D. DHCP Request unicast packet
Answer: C
NEW QUESTION 29
Which of the following tools is used to filter routing information and set route attributes based on routing information?
- A. as-path-filter
- B. IP-Prefix
- C. Route-policy
- D. Policy-based-route
Answer: C
NEW QUESTION 30
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