CCNA Practice Final Exam 1| Discovery 1, DHomesb 4.0, Home and Small Business Version| QUESTIONS WITH COMPLETE SOLUTIONS

What is the default subnet mask for an IP address of 64.100.19.14? CORRECT ANSWERS: 255.0.0.0 A network administrator has been notified that users have experienced problems gaining access to network resources. What utility could be used to directly query a name server for information on a destination domain? CORRECT ANSWERS: nslookup What does the term "attenuation" mean in data communication? CORRECT ANSWERS: loss of signal strength as distance increases What is the function of CSMA/CA on a wireless Ethernet network? CORRECT ANSWERS: to prevent collisions The area covered by a single AP is known as what? CORRECT ANSWERS: basic service set The help desk at a large packaging company receives a call from a user who is concerned about lost data files on the local PC. The help desk technician learns that the user clicked on an icon that appeared to be a program update, but no updates were scheduled for that program. What type of attack has likely occurred? CORRECT ANSWERS: worm Which installation option enables a single physical resource to function simultaneously as multiple logical resources? CORRECT ANSWERS: multi-boot Which part of the electromagnetic spectrum is commonly used to exchange data between a PDA and a computer? CORRECT ANSWERS: infrared A company has a web server that must be accessible to both external and internal clients. Which security policy best practice should be followed to maximize security of the server? CORRECT ANSWERS: Place the web server in a DMZ What is specified by the host bits in an IP address? CORRECT ANSWERS: identity of the computer on the network For an IP address, what component decides the number of bits that is used to represent the host ID? CORRECT ANSWERS: subnet mask What advantage does a peer-to-peer network have over a client-server network? CORRECT ANSWERS: It increases scalability. Refer to the exhibit. If H4 sends a message to H1 and the destination MAC address is in the MAC table for both Switch1 and Switch2, which host devices will receive the message? CORRECT ANSWERS: only H1