October 23 2009
640-802 Dumps Questions 355 to 357
QUESTION 355
You work as a network technician at a Certifyme office. After configuring two interfaces on the Certifyme3 router
as shown, you notice an error message. What should be done to fix this error?
A. The subnet mask of the serial interface on Certifyme3 should be changed to 255.255.255.0.
B. The subnet mask of the FastEthernet interface on Certifyme3 should be changed to 255.255.255.240.
C. The serial interface must be configured first.
D. The serial interface must use the address 192.168.1.2.
E. The address of the FastEthernet interface should be changed to 192.168.1.66.
Answer: B
Section: IMPLEMENT AN IP ADDRESSING SCHEME AND IP SERVICES TO MEET NETWORK
REQUIREMENTS IN A MEDIUM-SIZE ENTERPRISE BRANCH
Explanation/Reference:
Explanation:
Cisco routers will not allow you to configure two interfaces that belong to the same IP subnet. In this case, by
giving the serial 0/0 interface an IP address of 192.168.1.65, it would belong to this /28 subnet but it would also
belong to the 192.168.1.17/24 subnet.
You need to ensure that two interfaces are given IP addresses and subnet masks so that they belong to
different subnets, and given the options only the option of changing the mask of the FE interface to an /28 will
accomplish this.
QUESTION 356
The junior network support staff at Certifyme provided the diagram as a recommended configuration for the first
phase of a four-phase network expansion project. The entire network expansion will have over 1000 users on
14 network segments and has been allocated this IP address space:
192.168.1.1 through 192.168.5.255 192.168.100.1 through 198.168.100.255
There are three problems with this IP addressing design. What are they? (Choose three)
A. The broadcast domain in AREA 1 is too large for IP to function.
B. The AREA 3 IP address space is inadequate for the number of users.
C. AREA 2 could use a mask of /25 to conserve IP address space.
D. The router-to-router connection is wasting address space.
E. The network address space that is provided requires a single network-wide mask.
F. The AREA 1 IP address space is inadequate for the number of users.
Answer: CDF
Section: IMPLEMENT AN IP ADDRESSING SCHEME AND IP SERVICES TO MEET NETWORK
REQUIREMENTS IN A MEDIUM-SIZE ENTERPRISE BRANCH
Explanation/Reference:
Explanation:
C: Since there are only 60 users on this LAN, a /25 could be used as that will provide for up to 128 IP
addresses (126 usable). In fact, since there are only 60 users, a /26 could be used as that will provide for up to
62 usable IP addresses. However, this would not accommodate any kind of growth and could cause problems
in the future.
D: On point to point serial router links, a /30 is generally used as this will allow for only 2 usable IP addresses,
which is all that is needed. In this case, a /26 has been assigned.
F: In this area, there are 500 users, but a /24 will only provide for 254 usable IP addresses.
A /23 or larger will be needed to accommodate this many users.
Topic 4, CONFIGURE, VERIFY, AND
TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON CISCO DEVICES (225 questions)
Section 1: Describe basic routing concepts (including: packet forwarding, router lookup process) (4 questions)
Exam D
QUESTION 357
The following output was shown on router Certifyme3:
Refer to the output of the two show commands in the exhibit above. If the Certifyme network administrator tries
to ping host 10.1.8.55 from host 10.1.6.100, how will these ICMP packets be processed by Router Certifyme3?
A. The packets will be routed out the Fa0/0 interface
B. The packets will be discarded
C. The packets will be routed out the S0/0 interface
D. The packets will be routed out the S0/1 interface
E. None of the above
Answer: D
Section: CONFIGURE, VERIFY, AND TROUBLESHOOT BASIC ROUTER OPERATION AND ROUTING ON
CISCO DEVICES
Explanation/Reference:
