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Exam 400-101 topic 1 question 99 discussion

Actual exam question from Cisco's 400-101
Question #: 99
Topic #: 1
[All 400-101 Questions]

"Pass Any Exam. Any Time." - www.actualtests.com 112
Refer to the exhibit.

Which two statements about the implementation are true? (Choose two.)

  • A. The PPP multilink protocol header is omitted on delay-sensitive packets.
  • B. The maximum number of fragments is 1.
  • C. Small real-time packets are multilink-encapsulated.
  • D. A transmit queue is provided for smaller packets.
Show Suggested Answer Hide Answer
Suggested Answer: AD 🗳️
Previous implementations of Cisco IOS Multilink PPP (MLP) include support for Link Fragmentation Interleaving (LFI). This feature allows the delivery of delay- sensitive packets, such as the packets of a Voice call, to be expedited by omitting the PPP Multilink Protocol header and sending the packets as raw PPP packets in between the fragments of larger data packets. This feature works well on bundles consisting of a single link. However, when the bundle contains multiple links there is no way to keep the interleaved packets in sequence with respect to each other.
The Multiclass Multilink PPP (MCMP) feature in Cisco IOS Release 12.2(13)T addresses the limitations of MLP LFI on bundles containing multiple links by introducing multiple data classes. With multiclass multilink PPP interleaving, large packets can be multilink-encapsulated and fragmented into smaller packets to satisfy the delay requirements of real-time voice traffic; small real-time packets, which are not multilink encapsulated, are transmitted between fragments of the large packets. The interleaving feature also provides a special transmit queue for the smaller, delay-sensitive packets, enabling them to be transmitted earlier than other flows. Interleaving provides the delay bounds for delay-sensitive voice packets on a slow link that is used for other best-effort traffic.
References:
http://www.cisco.com/c/en/us/td/docs/ios/dial/configuration/guide/12_4t/dia_12_4t_book/dia_multic lass_link_ppp.pdf http://www.cisco.com/c/en/us/td/docs/routers/access/500/520/software/configuration/guide/520_S
"Pass Any Exam. Any Time." - www.actualtests.com 113
CG_Book/520scg_concepts.html
by kidschannel1988 at April 3, 2025, 6:12 p.m.

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