单选题In order to increase reliability， minimize collisions and establish a large number of systems on an Ethernet segment， which of the following options should be selected for the Ethernet network？（）A 10BaseTB Switched 10BaseTC Switched 100BaseT Half-Duple

第1题：

Which of the following options applies to virtual Ethernet devices（）

• A、A virtual Ethernet adapter can only connect to other partitions within the same system.
• B、A virtual Ethernet  adapter needs  to be connected to an external VLAN  capable switch to be able to communicate with other partitions on the same system.
• C、A partition can support an unlimited number of virtual Ethernet devices.
• D、A virtual Ethernet adapter in the VIO Server that is part of a SEA should not have the "trunk flag" set

第2题：

A home user wants to setup a wireless network. Which of the following would be the MOST important consideration?（）

• A、Operating system type of the connected PCs
• B、Location of the wireless router
• C、Number of PCs that will access the network
• D、Number of available Ethernet ports on the router

第3题：

With regard to Ethernet media access methods, which of the following are true?（）

• A、A device waits for an electronic signal before transmitting.
• B、A device listens and waits until the media is not busy before transmitting.
• C、All devices on an Ethernet segment see data that passes on the network medium.
• D、Only the sender and the receiver devices see data that passes on the network medium.
• E、Ethernet networks allow you to configured devises with higher transmission priority.

第4题：

Which three statements accurately describe layer 2 Ethernet switches？（）

• A、Microsegmentation decreases the number of collisions on the network.
• B、if a switch receives a frame for an unkown destination，it uses ARP to resolve the address.
• C、Spanning Tree Protocol allows switches to automatically share vlan information.
• D、In a properly functioning network with redundant switched paths，each swiched aegment will contain oneroot bridge with all its ports in the forwarding state.All other switches in that broadcast domain will haveonly one root port.
• E、Establishing vlans increases the number of  broadcast domains.
• F、Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3address information.

第5题：

A technician wants to increase the reliability of a DHCP server. Which of the following components should be installed to increase the server’s uptime on the network？（）

• A、 Increase the amount of RAM
• B、 Use a lower voltage power supply
• C、 Add a hardware firewall
• D、 Install redundant NICs

第6题：

In order to increase reliability， minimize collisions and establish a large number of systems on an Ethernet segment， which of the following options should be selected for the Ethernet network？（）

• A、10BaseT
• B、Switched 10BaseT
• C、Switched 100BaseT Half-Duplex
• D、Switched 100BaseT Full-Duplex

第7题：

Which three of the following options are NOT fields found in an Ethernet frame?（）

• A、Version
• B、Type
• C、Source Port
• D、Flags
• E、Data

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第13题：

Which of the following technologies allows multiple logical subnets to span an entire physical switched network？（）

• A、 ARP
• B、 DMZ
• C、 VLAN
• D、 VPN

第14题：

Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?（）

• 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.

第15题：

Which one of the following actions would actually increase congestion on an Ethernet network?（）

• A、Increasing the number of collision domains.
• B、Micro-segmenting the network.
• C、Adding hubs for connectivity to the network.
• D、Putting additional switches in the network.
• E、Implementing VLANs in the network.

第16题：

A server is connected to a gigabit Ethernet switch and has negotiated 1Gbps / Full Duplex. When transferring large files to and from other servers on the segment via FTP slow performance is noticed.All network cabling，network hardware and server hardware were verified to be working correctly.  Which of the following could be done to improve performance？（）

• A、 Decrease the TCP window size.
• B、 Increase the UDP window size.
• C、 Increase the TCP window size.
• D、 Decrease the UDP window size.

第17题：

A customer is planning to buy a two enclosure Power 770, and will implement 4 LPARs with the following requirements:Each LPAR must have a private, dedicated connection to the network.The adapter for this network connection must be hot-swappable.The customer wants to minimize the number of I/O slots used. Which of the following fulfills the customer requirements?（）

• A、Two dual-port PCIe adapters
• B、A four-port PCIe Ethernet adapter
• C、Four separate PCIe Ethernet adapters
• D、Two embedded Integrated Virtual Ethernet adapters (IVE)

第18题：

Company.com is adding HACMP to an existing pair of nodes. One node is using EtherChannel  with only one adapter. The other node is using regular Ethernet connection to the switch. The customer is going to increase the number of network interfaces to two for each node.  What other considerations need to be addressed in a HACMP environment？（）  

• A、 Al interfaces used for HACMP heartbeats must be identical. Differences in the interfaces will cause heartbeat failure.
• B、 The network interfaces should all be configured with the same frame type. The use of regular Ethernet frames is mandatory.
• C、 Network interfaces for HACMP must be all the same，Ethernet or 802.3. It does not matter which，as long as they are all the same.
• D、 HACMP can use any network interface supported by AIX. The options on the various interfaces are masked by the Ethernet switch and do not affect HACMP.

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