Bought or not, ask anytime — 24-hour service every day awaits your visit. The Cisco Quality of Service (QoS) valid materials at Test4Cram: 87 practice questions for the 642-642 exam with perfect after-service.
Cisco 642-642 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Implementing Cisco Quality of Service (QoS) |
| Exam Number: | 642-642 |
| Certificate Validity Period: | 3 years |
| Exam Price: | Approx $150-$200 USD |
| Available Languages: | English |
| Exam Format: | Drag-and-Drop, Simulation, Multiple Choice |
| Related Certifications: | Cisco IP Telephony Express Specialist Cisco IP Telephony Operations Specialist Cisco IP Telephony Design Specialist Cisco IP Telephony Support Specialist |
| Real Exam Qty: | 45-87 |
| Passing Score: | Approx 700-790 / 1000 |
| Exam Duration: | 90 minutes |
| Recommended Training: | Implementing Cisco QoS v2.1 |
| Exam Registration: | Pearson VUE (Historical) |
| Sample Questions: |  |
| Exam Way: | Proctored at Pearson VUE test centers; Retired since October 29, 2012 |
| Pre Condition: | Valid CCNA certification or equivalent knowledge |
| Official Syllabus URL: | https://www.cisco.com |
Cisco 642-642 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Congestion Management | 20% | - Priority queuing and bandwidth allocation - Queuing algorithms: WFQ, CBWFQ, LLQ |
| IP QoS Fundamentals and Models | 20% | - QoS models: Best-Effort, IntServ, DiffServ - Need for QoS in converged networks - DSCP, IP Precedence, CoS, MPLS EXP marking |
| Classification and Marking | 20% | - NBAR, ACL-based classification - Marking mechanisms and trust boundaries - Layer 2 and Layer 3 classification |
| Congestion Avoidance & Link Efficiency | 10% | - WRED, RED - Fragmentation, Compression, LFI |
| Modular QoS CLI (MQC) and AutoQoS | 15% | - Class-maps, Policy-maps, Service-policy - AutoQoS for Enterprise and VoIP |
| Traffic Policing and Shaping | 15% | - Shaping: GTS, FRTS, CB-Shaping - Policers: single-rate, two-rate |
642-642 Exam FAQ — No Waiting
Yes:
After any course, practice with the 87 practice questions for the Cisco Quality of Service (QoS) — every answer expert-verified.
At the first moment after payment, our system sends the downloading link, account, and password to your email box — about a minute; remember to check your email box after payment, and contact our 24-hour service if nothing arrives within 2 hours. If you fail the corresponding 642-642 exam within 60 days of purchase, we refund the full amount: send a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam, processed within 7 days. Excluded: exams within 3 days of purchase, candidate names that don't match the payer, and free or expired products. Or exchange for two equal-value products free.
Approx $150-$200 USD per attempt, Approx 700-790 / 1000 to pass. Retakes cost the full fee — make the attempt count with the 87 practice questions for the 642-642 exam at Test4Cram.
Valid CCNA certification or equivalent knowledge Eligibility rules change over time, so verify the current requirements on the official page (official 642-642 exam page) before registering.
The Cisco Quality of Service (QoS) is Cisco's certification exam for Cisco Certified Internetwork Professional (CCIP), Cisco Certified Voice Professional (CCVP), at the Professional level. The certificate is an indispensable credential in this field. Related credentials include Cisco IP Telephony Design Specialist, Cisco IP Telephony Express Specialist, Cisco IP Telephony Operations Specialist, Cisco IP Telephony Support Specialist.
Yes — download the free Cisco Quality of Service (QoS) demo before purchase; the full book torrent is better still. Purchases include 365 days of free updates by email; renew afterward at 50% off.
Through the vendor's official registration channels:
The Cisco Quality of Service (QoS) is delivered Proctored at Pearson VUE test centers; Retired since October 29, 2012 — pick the arrangement that suits you when booking.
The Cisco Quality of Service (QoS) blueprint spans 6 domains — including Congestion Avoidance & Link Efficiency (10%), Modular QoS CLI (MQC) and AutoQoS (15%), IP QoS Fundamentals and Models (20%). Our experts check the exam database daily to keep pace; the complete outline above lists every subtopic.
90 minutes for 45-87 questions. Download immediately after payment and put the saved time into timed practice with the Test4Cram engine.
Cisco Quality of Service (QoS) Sample Questions:
What will be the peak shape rate based on the configuration that follows?
policy-map setpeak
class all-traffic
shape peak 32000
- A. 16000 bps
- B. 96000 bps
- C. 32000 bps
- D. 80000 bps
- E. 64000 bps
- F. 48000 bps
Correct Answer: E 🗳️
Explanation: Only visible for Test4Cram members. You can sign-up / login (it's free).
The show policy-map interface command output is showing too many random drops for the mission-critical traffic class. What can be changed to reduce the random drops?
- A. Enable fair-queue within the mission-critical traffic class.
- B. Increase the WRED max-threshold value for the mission-critical traffic class.
- C. Increase the WRED min-threshold value for the mission-critical traffic class.
- D. Decrease the WRED drop probability denominator for the mission-critical traffic class.
- E. Decrease the queue-limit for the mission-critical traffic class.
Correct Answer: C 🗳️
Explanation: Only visible for Test4Cram members. You can sign-up / login (it's free).
Where is the error in the following policy-map configuration?
policy-map test class voice priority 168 class mission-critical bandwidth 192 random-detect class class-default fair-queue bandwidth 128
- A. The mission-critical traffic class bandwidth guarantee should be lower than the voice traffic class priority bandwidth guarantee.
- B. The bandwidth command is not a valid command for the class-default traffic class in this case.
- C. The mission-critical traffic class is missing the queue-limit command.
- D. The voice traffic class is missing the random-detect command.
- E. Fair-queue should be enabled for the mission-critical traffic class.
Correct Answer: B 🗳️
Explanation: Only visible for Test4Cram members. You can sign-up / login (it's free).
Where is the fragment size configured when using FRF.12 link fragmentation and interleaving?
- A. within the MQC service-policy
- B. within the physical serial interface
- C. within the MQC class-map
- D. within the logical multilink interface
- E. within the MQC policy-map
- F. within the Frame Relay map-class
Correct Answer: F 🗳️
Explanation: Only visible for Test4Cram members. You can sign-up / login (it's free).
Viewing page 1 out of 18 pages.
Viewing questions 1-5 out of 87 questions.
