O'Reilly logo

CompTIA A+ Complete Review Guide: Exams 220-801 and 220-802, 2nd Edition by Troy McMillan, Emmett Dulaney

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Appendix A

Answers to Review Questions

Chapter 1: PC Hardware

1. Port settings (parallel, serial, USB), drive types, boot sequence, date and time, and virus/security protections.

2. POST performs diagnostics, including checking the CPU, checking the RAM, and checking for the presence of a video card.

3. The multiplier.

4. Chipset.

5. Molex.

6. Error detection.

7. FireWire.

8. 650–700 MB.

9. False; only two devices can be placed in an IDE ribbon cable.

10. 34-pin ribbon cable.

Chapter 2: Networking

1. The default port for DNS is 53.

2. CAT6 transmits data at speed up to 10 Gbps.

3. IPv4 uses 32-bit addresses. IPv6 uses a 128-bit addressing scheme.

4. It is estimated that the 802.11n speeds might be able to reach 600 Mbps.

5. When MAC filtering ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required