Q13
With regard to bandwidth, which of the following statements are true? (Choose all that apply.)A. Bandwidth availability is decreasing.B. Bandwidth availability is infinite.C. Bandwidth is used when analyzing network performance.D. Bandwidth availability is finite.E. Bandwidth availability is fixed.Ans: C, D


Q14
In the following is the MAC address of your NIC:
C9-3F-32-B4-DC-19
What is the OUI portion expressed in binary format?A. 11001100-00111111-00011000B. 11000110-11000000-00011111C. 11001110-00011111-01100000D. 11001001-00111111-00110010E. 11001100-01111000-00011000F. 11111000-01100111-00011001Ans: D

Explanation:
The first half of the address identifies the manufacturer of the card. This code, which is assigned to each
manufactory by the IEEE, is called the organizationally unique identifier (OUI). In this example, the OUI is:
C9-3F-32. This equates to 11001001-00111111-00110010
Reference:
CertKing 640-821 Study Guide, Appendix A "Decimal, Hexadecimal and Binary Conversion Table"


Q15
You are the network administrator at CertKing . You want to implement mechanism that automates the
IP configuration, including IP addresses, subnet masks, default gateways, and DNS server information,
for hosts on the CertKing network.
What protocol allows you to accomplish this?A. SMTPB. SNMPC. DHCPD. DARPE. RRIPAns: C

Explanation:
DHCP uses the concept of the client making a request and the server supplying the IP address to the client, plus
other information such as the default gateway, subnet mask, DNS IP address, and other information.
Reference:
CCNA Self-Study CCNA INTRO exam certification Guide (Cisco Press, ISBN 1-58720-094-5) page 132


Q16
Which of the following protocols uses TCP port 443?A. HTMLB. HTTPSC. TFTPD. TelnetE. SMTPAns: B

Explanation:
HTTPS is an application layer protocol which uses TCP port 443.
Incorrect Anss:
A: HTML is not a protocol.
C: TFTP uses UDP port 69.
D: Telnet uses TCP port 23.
E: SMTP uses TCP port 25.
Reference:
CertKing 640-821 Study Guide, Appendix B "Common TCP and UDP Ports Assignments"


Q17
In the router IOS binary image file name c7200-ajs40-mx, what does c7200 represent?A. The memory capacity requirementsB. The hardware product platformC. The distribution channelD. The feature capabilitiesE. The run location and compression statusAns: B

Explanation:
Cisco has a Cisco IOS image naming convention for identifying the platform or board for which the binary
software is built, the package feature content of the image, and the area of memory used by the image at run
time. The image name follows a three-part format: PPPPP-FFFF-MM
where PPPPP represents the platform; FFFF represents features; and MM represents run-time memory and
compression format.
Reference:
http://www.cisco.com/en/US/products/sw/iosswrel/ios_abcs_ios_networking_the_enterprise0900aecd800a4e14.
html


Q18
You are a technician at CertKing . You are troubleshooting a connectivity problem on the CertKing
network. You want to isolate the problem. You suspect that a router on the route to an unreachable
network is at fault.
What IOS user EXEC command should you issue?A. Router> pingB. Router> traceC. Router> show ip routeD. Router> show interfaceE. Router> show cdp neighborsAns: D

Explanation:
Show interface - Lists interface statistics, including IP addresses.
Reference:
CCNA Self-Study CCNA INTRO exam certification Guide (Cisco Press, ISBN 1-58720-094-5) page 369