Exambible Cisco CCNA Certificate
Cisco certification receives the most recognition in all IT certifications currently. Now it is quite popular to take Cisco exams. 60 percent of companies use Cisco products, so they may take the ownership of Cisco certificates into consideration in hiring new employees. How to exert the maxmum [...]
Cisco 642-825 Free Demo – 6
Q26
ADSL broadband connections using the PPPoE access method typically uses which type of user authentication method?
A. AAA authentication
B. DNIS authentication
C. Caller-ID authentication
D. PPP CHAP authentication
E. IPSec authentication
F. L2TP authentication
Answer: D
Explanation:
Once the DSL device is installed and configured for PPPoE the encapsulation of all traffic with PPPoE/PPP headers is performed. The default authentication mechanism for PPPoE [...]
Cisco 642-825 Free Demo – 5
Q21
Part of the configuration of a Exambible router is shown below:
Leading the way in IT testing and certification tools, www.exambible.com
Based on the information above, what is needed to complete the PPPoA configuration on this Exambible router?
Leading the way in IT testing and certification tools, www.exambible.com
A. The ATM PVC needs to be configured.
B. The VPDN group [...]
Cisco 642-825 Free Demo – 4
Q17
When designing an ADSL network; if you want minimal local loop impairments, what should be the maximum distance of your lines?
A. 1000 feet (0.3 km)
B. 4000 feet (1,5 km)
C. 12,000 feet (3.65 km)
D. 18,000 feet (5,5 km)
E. 28,000 feet (8.52 km)
Answer: D
Explanation:
DSL is a highly distance-sensitive technology. As the distance from the CO increases, the [...]
Cisco 642-825 Free Demo – 3
Q13
Which ADSL modulation type:
1. is prominent in residential applications has 120 subchannels 2.
doesn’t need a splitter 3.
has a 1.5 Mbps maximum downstream speed? 4.
A. CAP
B. DMT
C. G.Lite
D. PPPoA
E. PPPoE
Answer: C
Explanation:
ITU GLITE (ITU G.992.2) describes splitterless Asymmetric Digital Subscriber Line (ADSL) Transceivers on
a metallic twisted pair that allows high-speed data transmission between the Central Office (ATU-C) [...]
Cisco 642-825 Free Demo – 2
Section 2: Describe xDSL Technologies (11 Questions)
Q9
Exambible operates a DSL network. What does the “dsl operating-mode auto”
command configure on a Cisco router?
A. It configures a Cisco router to automatically detect the proper modulation
method to use when connecting an ATM interface.
B. It configures a Cisco router to automatically detect the proper DSL type
(ADSL, IDSL, HDSL, VDSL) [...]
Cisco 642-825 Free Demo – 1
Get From exambible 642-825
Q5
A new cable modem was shipped to the home of a Exambible user, where it is being installed for the first time. When a DOCSIS 1.1 compliant cable modem first initializes, (boots up) what does it do?
A. Establishes IP connectivity (DHCP).
B. Determines the time of day.
C. Requests a DOCSIS configuration file from [...]
Cisco 642-825 Free Demo – 0
Topic 1, Implement Basic Teleworker Services (37
Questions)
Section 1: Describe Cable (HFC) technologies (8 Questions)
Q1
A few small Exambible locations use HFC cable to connect to the Exambible WAN.
Which HFC cable network statement is true about the downstream data channel to the customer and the upstream data channel to the service provider?
A. The upstream data path is [...]