[Free] 2017(July) Ensurepass Braindumps Cisco 400-101 Latest Dumps 461-470

Ensurepass
2017 July Cisco Official New Released 400-101 Q&As
100% Free Download! 100% Pass Guaranteed!
http://www.ensurepass.com/400-101.html

CCIE Routing and Switching Written Exam v5.1

QUESTION 461

How many bytes comprise the system ID within an IS-IS NET?

 

A.

4 bytes

B.

6 bytes

C.

8 bytes

D.

16 bytes

E.

20 bytes

 

Correct Answer: B

Explanation:

Routers are identified with NETs of 8 to 20 bytes. ISO/IEC 10589 distinguishes only three fields in the NSAP address format: a variable-length area address beginning with a single octet, a system ID, and a 1-byte n-selector. Cisco implements a fixed length of 6 bytes for the system ID, which is like the OSPF router ID.

Reference: http://www.cisco.com/en/US/products/ps6599/products_white_paper09186a00800a3e6f.shtml

 

 

QUESTION 462

What are two reasons to use the ip ospf database filter all out command? (Choose two.)

 

A.

to maintain a centralized OSPF database on a single master device

B.

to avoid flooding LSAs on low-speed links

C.

to ensure a consistent OSPF database across the network

D.

to selectively filter OSPF routes without disruptin
g the SPF algorithm

E.

to filter only type 7 LSAs from an OSPF area

F.

to enable OSPF to send triggered updates

 

Correct Answer: AB

 

 

 

QUESTION 463

Refer to the exhibit. Which two statements about this configuration are true? (Choose two.)

 

clip_image002

 

A.

Pings from SW2 to SW1 fail because SW1 is pruning VLAN 10.

B.

VLANs 10 and 200 are added to the SW2 allowed list on interface fa0/22.

C.

Pings from SW2 to SW1 are successful.

D.

Only VLAN 200 is added to the SW1 allowed list on interface fa0/22.

 

Correct Answer: BC

 

 

QUESTION 464

Which circumstance can cause TCP starvation and UDP dominance to occur?

 

A.

Too few queues are available.

B.

UDP is comprised of smaller packets than TCP.

C.

Retransmitted TCP packets are on the network.

D.

UDP and TCP data are assigned to the same service-provider class.

 

Correct Answer: D

 

 

 

 

 

 

 

 

 

 

 

QUESTION 465

DRAG DROP

Drag and drop the OSPFv3 LSA type on the left to the functionality it provides on the right.

 

clip_image004

 

Correct Answer:

clip_image006

 

 

 

 

 

 

 

 

QUESTION 466

DRAG DROP

Drag and drop the BGP attribute on the left to the correct category on the right.

 

clip_image008

 

Correct Answer:

clip_image010

 

 

 

 

 

 

 

 

 

 

 

 

 

 

QUESTION 467

DRAG DROP

Drag each IPv6 extension header on the left to its corresponding description on the right.

 

clip_image012

 

Correct Answer:

clip_image014

 

 

QUESTION 468

Which two solutions can reduce UDP latency? (Choose two.)

 

A.

Fast retransmission

B.

Fast recovery

C.

Fast start

D.

Low-latency queuing

E.

IP service level agreements

F.

Congestion-avoidance algorithm

 

Correct Answer: DE

Explanation:

IP SLA uses active traffic monitoring, which generates traffic in a continuous, reliable, and predictable manner to measure network performance. IP SLA sends data across the network to measure performance between multiple network locations or across multiple network paths. It simulates network data and IP services, and collects network performance information in real time. This information is collected:

Response times

One-way latency, jitter (interpacket delay variance)

Packet loss

Network resource availability

LLQ uses the priority command. The priority command allows you to set up classes based on a variety of criteria (not just User Datagram Ports (UDP) ports) and assign priority to them, and is available for use on serial interfaces and ATM permanent virtual circuits (PVCs). A similar command, the ip rtp priority command, allows you to stipulate priority flows based only on UDP port numbers.

Note: All the other answer choices can be used to improve TCP performance, but not UDP.

References:

http://www.cisco.com/c/en/us/td/docs/routers/xr12000/software/xr12k_r4-2/system_monitoring/configuration/guide/b_sysmon_cg42xr12k/b_sysmon_cg42xr12k_chapter_011.html

http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/fsllq26.html

 

 

QUESTION 469

Which two statements about Cisco Express Forwarding are true? (Choose two.)

 

A.

Cisco Express Forwarding tables contain reachability information and adjacency tables contain forwarding information.

B.

Cisco Express Forwarding tables contain forwarding information and adjacency tables contain reachability information.

C.

Changing MAC header rewrite strings requires cache validation.

D.

Adjacency tables and Cisco Express Forwarding tables can be built separately.

E.

Adjacency tables and Cisco Express Forwarding tables require packet process- switching.

 

Correct Answer: AD

Explanation:

Main Components of CEF

Information conventionally stored in a route cache is stored i
n several data structures for Cisco Express Forwarding switching. The data structures provide optimized lookup for efficient packet forwarding. The two main components of Cisco Express Forwarding operation are the forwarding information base (FIB) and the adjacency tables.

The FIB is conceptually similar to a routing table or information base. A router uses this lookup table to make destination-based switching decisions during Cisco Express Forwarding operation.

The FIB is updated when changes occur in the network and contains all routes known at the time.

Adjacency tables maintain Layer 2 next-hop addresses for all FIB entries.

This separation of the reachability information (in the Cisco Express Forwarding table) and the forwarding information (in the adjacency table), provides a number of benefits:

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipswitch_cef/configuration/15-mt/iswcef-15-mt-book/isw-cef-overview.html

 

 

QUESTION 470

Which three options are components of an EEM CLI policy? (Choose three.)

 

A.

Safe-Tcl

B.

applet name

C.

Fast Tcl

D.

event

E.

action

F.

Tcl bytecode

 

Correct Answer: BDE

Explanation:

The Embedded Event Manager (EEM) monitors events that occur on your device and takes action to recover or troubleshoot these events, based on your configuration.

EEM consists of three major components:

Event statements-Events to monitor from another Cisco NX-OS component that might require some action, workaround, or notification.

Action statements-An action that EEM can take, such as sending an e-mail, or disabling an interface, to recover from an event.

Policies-An applet name paired with one or more actions to troubleshoot or recover from the event.

Reference:

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5500/sw/system_management/6x/b_5500_System_Mgmt_Config_6x/b_5500_System_Mgmt_Config_6x_chapter_010011.html

100% Free Download!
—Download Free Demo:400-101 Demo PDF
100% Pass Guaranteed!
Download 2017 Ensurepass 400-101 Full Exam PDF and VCE Q&As:1299
—Get 10% off your purchase! Copy it:TJDN-947R-9CCD [2017.07.01-2017.07.31]

Ensurepass ExamCollection Testking
Lowest Price Guarantee Y
es
No No
Up-to-Dated Yes No No
Real Questions Yes No No
Explanation Yes No No
PDF + VCE Yes No No
Free VCE Simulator Yes No No
Instant Download Yes No No

2017 Ensurepass IT Certification PDF and VCE