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Which two statements correctly describe the relation between

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Which two statements correctly describe the relation between a data file and the logical database structures（）
A

An extent cannot spread across data files.

B

A segment cannot spread across data files.

C

A data file can belong to only one tablespace.

D

A data file can have only one segment created in it.

E

A data block can spread across multiple data files as it can consist of multiple operating system （OS）blocks

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相似问题和答案

第1题：

Which two of these statements best describe the benefits of WPAv2？ （Choose two.）（）

  • A、 SSID broadcast prevention
  • B、 man-in-the-middle attack protection
  • C、 cost reduction through software upgrades in all existing hardware
  • D、 dynamic key generation
  • E、 RF jamming prevention

正确答案:B,D

第2题：

Which two statements best describe Cisco IOS IP SLA？（）

  • A、only implemented between Cisco source and destination-capable devices
  • B、statistics provided by syslog， CLI， and SNMP
  • C、measures delay， jitter， packet loss， and voice quality
  • D、only monitors VoIP traffic flows
  • E、provides active monitoring
  • F、provides passive monitoring

正确答案:C,E

第3题：

Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet? (Select two answer choices.)

A．Full-duplex Ethernet uses CSMA/CD to prevent collisions.

B．Half-duplex Ethernet uses a loopback circuit to detect collisions.

C．A full-duplex Ethernet card allows 20Mbps for data transmission.

D．Full-duplex Ethernet makes use of two pairs of wires for data.

E．An Ethernet hub can operate both half and full duplex simultaneously.


正确答案：BD
解析：Explanation:
Half-duplex Ethernet send and receives on the same line, so a loopback needs to be set to detect collisions. Alternatively, full-duple Ethernet doesn't have to because it uses two pairs of wire, one to send and the other to receive. Collisions are not possible on full duplex Ethernet networks.

Incorrect Answers:
A. Full duplex uses both pairs of wires, so transmissions are sent on the first pair, and data that is received come in on the other pair. This prevents collisions.

C. Full duplex allows for data to be sent and received at the same time. It will not double the amount of bandwidth at any given time. The speed of the Ethernet link will remain at 10/100.

E. Hubs are shared devices and can only support one mode, unlike switches.

第4题：

Which two of these statements best describe the benefits of WPAv1？ （）

  • A、 SSID broadcast prevention
  • B、 Improved mutual authentication
  • C、 Improved encryption through AES
  • D、 Improved protection against sniffing initialization vectors
  • E、 RF jamming prevention

正确答案:B,D

第5题：

Which two statements correctly describe the relation between a data file and the logical databasestructures（）

  • A、An extent cannot spread across data files.
  • B、A segment cannot spread across data files.
  • C、A data file can belong to only one tablespace.
  • D、A data file can have only one segment created in it.
  • E、A data block can spread across multiple data files as it can consist of multiple operating system （OS） blocks.

正确答案:A,C

第6题：

Which two statements correctly describe a Cisco WLC configuration of Wireless > QoS > Profiles >Wired_QoS_Profiles for an implementation of DSCP or CoS deployment?（）

  • A、It must always be set on all QoS profile types because this sets the type of markings as either CoS or DSCP.
  • B、It is optional if the Cisco WLC attached switch operates on a trust DSCP model.
  • C、It must be set if the Cisco WLC attached switch operates on a trust CoS model.
  • D、It sets the EDCF queue used for the radio-transmitted frames.

正确答案:B,C

第7题：

Which two statements correctly describe VTP？（）

  • A、Transparent mode always has a configuration revision number of 0.
  • B、Transparent mode cannot modify a VLAN database.
  • C、Client mode cannot forward received VTP advertisements.
  • D、Client mode synchronizes its VLAN database from VTP advertisements.
  • E、Server mode can synchronize across VTP domains.

正确答案:A,D

第8题：

Which two statements correctly describe a situation in which an Active／Standby Service Module design is being used?()

A. Troubleshooting is more complicated.

B. Service and switch modules are underutilized.

C. Layer 2 adjacency is required with the servers that use this design.

D. Layer 3 adjacency is required with the servers that use this design.

E. Load balancing will always occur across both access layer uplinks.


参考答案：B, C

第9题：

Which two statements accurately describe an IBGP peering session?（） (Choose two.)

  • A、Peers are statically defined.
  • B、Peers exist within the same AS.
  • C、Peers must be directly connected to each other.
  • D、Peers advertise routes learned from other IBGP neighbors.

正确答案:A,B

第10题：

Which two statements describe the advantages to the use of RIP over the use of OSPF?（）

  • A、RIP requires less time to converge
  • B、RIP uses less bandwidth
  • C、RIP is less complex to configure
  • D、RIP demands fewer router resources
  • E、RIP has a more accurate metric

正确答案:C,D

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