Learn with Cisco : 642-642 training material for 100% pass
Updated: Jun 01, 2026
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Cisco Quality of Service (QoS) Sample Questions:
1. Which command is needed to correct the following configurations in order to enable ppp multilink
LFI on the s0/0 interface?
interface Serial0/0
ip address 10.1.1.1 255.255.255.0
encapsulation ppp
no fair-queue
ppp multilink
multilink-group 2001100114
!
interface Multilink2001100114
bandwidth 384
ip address 10.1.1.1 255.255.255.0
service-policy output AutoQoS-Policy-UnTrust
ppp multilink
ppp multilink fragment-delay 10
ppp multilink interleave
A) the no ip address command on the s0/0 interface
B) the multilink-group 2001100114 command on the Multilink2001100114 interface
C) the ppp multilink load-threshold command on the s0/0 interface
D) the ppp multilink load-threshold command on the Multilink2001100114 interface
E) the ppp multilink interleave command on the s0/0 interface
2. At the network layer, IP packets are typically classified based on which three items? (Choose three.)
A) flow control bits
B) content of the ToS byte
C) VLAN Identifier
D) source and destination IP addresses
E) packet length
3. DRAG DROP
Drop
4. What does the following command accomplish?
router(config-pmap-c)# shape fecn-adapt
A) enables the router to increase the shaping rate when BECN bits are received
B) enables the router to lower the shaping rate when BECN bits are received
C) enables the router to respond to FECN bits by creating test frames in the opposite direction with the BECN bit set
D) enables the router to lower the shaping rate when FECN bits are received
E) enables the router to respond to BECN bits by creating test frames in the opposite direction with the FECN bit set
F) enables the router to increase the shaping rate when FECN bits are received
5. DRAG DROP
Drop
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B,D,E | Question # 3 Answer: Only visible for members | Question # 4 Answer: C | Question # 5 Answer: Only visible for members |
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