单选题Which of the following is a diplexer used for？（）A Allows two satellite tuners to use the same dish.B Connects the low noise block down converter （LNB） to the multi-switch.C Combines satellite and over the air （OTA） signals.D Allows one LNB to use two s

第1题：

Which of the following cable types is used to transmit data from a satellite dish to the satellite modem?（）

• A、CAT5e
• B、CAT3
• C、Fiber
• D、RG-6

第2题：

When multiple PPP over Ethernet subscribers connect using the same DSL modem, which two attributes does the ERX use to differentiate between subscribers? （）(Choose two.)

• A、PPP session ID
• B、subscriber name
• C、source MAC address
• D、destination MAC address

第3题：

You need to decide on the best router redundancy protocol to use in the Company network.  Which  two statements are true about HSRP， VRRP， and GLBP？（）

• A、 GLBP and VRRP allow for MD5 authentication， whereas HSRP does not.
• B、 HSRP allows for multiple upstream active links being simultaneously used， whereas GLBP  does not.
• C、 GLBP allows for router load balancing of traffic from a network segment without the different  host IP configurations required to achieve the same results with HSRP.
• D、 Unlike HSRP and VRRP， GLBP allows automatic selection and simultaneous use of multiple  available gateways.
• E、 GLBP allows for router load balancing of traffic from a network segment by utilizing the creation  of multiple standby groups.

第4题：

A server has a processor that allows it to calculate two applications at the same time. Which of the following describes this capability of the processor?（）

• A、Dual processing
• B、Multi-processing
• C、Multi-tasking
• D、Multi-threading

第5题：

Which of the following best describes Simultaneous Multi-threading （SMT）？（）

• A、A POWER5 microprocessor feature that allocates two processors to each application
• B、A Workload Manager feature that allows two processing threads to be executing on a single processor
• C、An AIX v5.2 feature that allows two processing threads to be executing on a single processor concurrently
• D、A POWER5 microprocessor feature that allows two processing threads to be executing on a single processor concurrently

第6题：

Which two statements are true regarding transactions in an Oracle database（）

• A、Multiple transactions can use the same undo segment.
• B、A transaction is assigned an undo segment when it is started.
• C、More than one transaction cannot share the same extent in the undo tablespace.
• D、The transactions use system undo segment to store undo data if all the segments in the undo tablespaceare used.

第7题：

第8题：

第9题：

第10题：

第11题：

第12题：

第13题：

Which two are true？（）

• A、 An encapsulated， public class promotes re-use.
• B、 Classes that share the same interface are always tightly encapsulated.
• C、 An encapsulated class allows subclasses to overload methods， but does NOT allow overriding methods.
• D、 An encapsulated class allows a programmer to change an implementation without affecting outside code.

第14题：

Which of the following wiring standards would MOST likely be used to interconnect two devices without the use of a hub or switch?（）

• A、568A
• B、568B
• C、Crossover
• D、Loopback

第15题：

Which of the following is a diplexer used for？（）

• A、Allows two satellite tuners to use the same dish.
• B、Connects the low noise block down converter （LNB） to the multi-switch.
• C、Combines satellite and over the air （OTA） signals.
• D、Allows one LNB to use two satellites.

第16题：

Which of the following allows the user to have two separate Ethernet networks share the same network adapter？（）

• A、VLAN tags
• B、EtherChannel
• C、Virtual Ethernet
• D、Shared Ethernet Adapter

第17题：

Which two environments would take advantage of TCP Acceleration (AFP)? （）(Choose two.)

• A、satellite networks
• B、low-latency networks
• C、long-haul link with 95% compressibility.
• D、long-haul link with 10% compressibility.

第18题：

第19题：

第20题：

第21题：

第22题：

第23题：