A new processor was recently installed on a one year old motherboard, replacing the original processor. The processor is on the motherboard’s supported processor list and was double checked for proper installation. However, the PC refuses to POST properly and displays no video onscreen. Which of the following is the MOST likely issue?（）

A、Too much thermal paste was used on the processor and it is preventing boot.

B、The motherboard needs to have its PWD jumper removed before the first boot.

C、The motherboard needs to have the most recent BIOS version installed.

D、The motherboard needs to have a newer CMOS chip installed.

Very long, complex expressions in program are difficult to write correctly and difficult to（）.

A、defend

B、detect

C、default

D、debug

有如下类模板定义：已知b1、b2是BigNumber的两个对象，则下列表达式中错误的是（　　）。

A、b1+b2

B、b1+3

C、3+b1

D、3+3

You need to control SSH, HTTP, and Telnet access to an MX240 router through any interface.You have decided to use a firewall filter.How should you apply the firewall filter?（）

A、as an outbound filter on interface fxp0

B、as an outbound filter on interface lo0

C、as an inbound filter on interface fxp0

D、as an inbound filter on interface lo0

Most Computer operating systems in use today, including all consumer-targeted systems, include a TCP/IP（）.

A、plan

B、requirement

C、implementation

D、design

某磁盘盘组共有10个盘面，每个盘面上有100个磁道，每个磁道有32个扇区，假定物理块的大小为2个扇区，分配以物理块为单位。若使用位示图（Bitmap）管理磁盘空间，则位图需要占用（1）字节空间。若采用空白文件管理磁盘空间，且空白文件目录的每个表项占用5个字节，则当空白文件数目大于（2）时，空白文件目录占用的字节数大于位图占用的字节数。空白（2）处应选择（）

A、400

B、360

C、320

D、160