Welcome to download the newest Pass4itsure c_fsutil_60 VCE dumps: http://www.pass4itsure.com/c_fsutil_60.html
You must read the Cisco 642-801 exam sample questions provided by FLYDUMPS related to the subjects, which will help you to be prepared for clearing the Cisco 642-801 exam in the shortest possible time. In order to help the candidates become certified professionals, Flydumps provides you a comprehensive Cisco 642-801 exam sample questions. Passing Cisco 642-801 exam is one of the core requirements. On one hand, Flydumps Cisco 642-801 exam sample questions helps you acquire the certification; on the other hand, it gives you the capacity to absorb the Cisco 642-801 technology fully and very well.
QUESTION 73
The Certkiller network is utilizing IS-IS for the routing protocol. By default, what is the metric used by the Certkiller routers on IS-IS interfaces?
A. Delay
B. Error
C. Default
D. Expense
E. Bandwidth
F. Hops
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation: The default metric used on Cisco IOS for IS-IS is cost. For each IS-IS interface, the range is from 0 to 63 with the default value being 10.
QUESTION 74
In the IS-IS routing protocol, what metric is supported exclusively by the Cisco IOS?
A. Cost
B. Delay
C. Expense
D. Error
E. None of the above
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation: The original IS-IS specification defines four different types of metrics. Cost, being the default metric, is supported by all routers. Delay, expense, and error are optional metrics. The delay metric measures transit delay, the expense metric measures the monetary cost of link utilization, and the error metric measures the residual error probability associated with a link. The Cisco implementation uses cost only. If the optional metrics were implemented, there would be a link-state database for each metric and SPF would be run for each link-state database. IS-IS uses a single required default metric with a maximum path value of 1024. The metric is arbitrary and typically is assigned by a network administrator. Any single link can have a maximum value of 64, and path links are calculated by summing link values. Maximum metric values were set at these levels to provide the granularity to support various link types while at the same time ensuring that the shortest-path algorithm used for route computation will be reasonably efficient. IS-IS also defines three optional metrics (costs): delay, expense, and error. Reference:http:// www.cisco.com/en/US/tech/ CK3 65/ CK3 81/technologies_white_paper09186a0080 0a3e6f.shtml
QUESTION 75
The Certkiller network is displayed in the diagram below:
In the network segment of the above exhibit, which router is going to become the level-2 DIS (Designated Intermediate System)?
A. Certkiller 1
B. Certkiller 2
C. Certkiller 3
D. Certkiller 4
E. None
Correct Answer: BEACD Section: (none) Explanation QUESTION 76
On a point-to-point IS-IS network connection, the PSNP (Partial Sequence Number Packet) is responsible for which of the following?
A. Acknowledging LSPs.
B. Replacing IIH packets.
C. Establishing adjacencies.
D. Sending link-state changes.
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation: Partial sequence number PDUs (PSNPs) are used to request an LSP (or LSPs) and acknowledge receipt of an LSP (or LSPs). Reference: Cisco, Introduction to Intermediate, System-to-Intermediate System Protocol http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/insys_wp.htm
QUESTION 77
Which of the following metrics can be used by IS-IS when determining the best path to a destination? (Choose four)
A. default
B. load
C. delay
D. expense
E. reliability
F. error
G. uptime
Correct Answer: ACDFEGB Section: (none) Explanation
QUESTION 78
Which packet type is used to acknowledge LSPs on point-to-point links and to request missing pieces of information in the IS-IS link state database?
A. complete SNP (CSNP)
B. partial SNP (PSNP)
C. hello
D. database query
E. database description packet (DDP)
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
Explanation: The different IS-IS packet types are described below: CSNP-Complete Sequence Number PDUs are used to tell other routers about all the LSPs in one router database; similar to an OSPF database descriptor packet PSNP-Partial Sequence Number PDUs are used to request an LSP and acknowledge receipt of an LSP PDUs (PSNP’s) every 3 seconds and complete sequence number PDUs (CSNPs) every 10 seconds that describe the full database of the DIS. Another router can ask the DIS for a missing LSP using a partial sequence number packet (PSNP), or in turn give the DIS a new LSP.
QUESTION 79
The Certkiller network is shown below, along with the relevant information on router CK1 : CK1 #show clns interface ethernet 0 Ethernet0 is up, line protocol is up Checksums enabled, MTU 1497, Encapsulation SAP Routing Protocol: ISIS Circuit Type: level-1-2 Interface number 0x0, local circuit ID 0x1 Level-1 Metric: 10, Priority: 64, Circuit ID: CK2 .02 Number of active level-1 adjacencies: 1 Level-2 Metric: 10, Priority: 64, Circuit ID: CK2 .01 Number of active level-2 adjacencies: 1 Next ISIS LAN Level-1 Hello in 5 seconds Next ISIS LAN Level-2 Hello in 2 seconds Based on the information above, which statement is correct about IS-IS?
A. Router CK1 is the DIS for both L1 and L1
B. Router CK1 is the backup DIS for both L1 and L2.
C. Router CK2 is the DIS for both L1 and L2.
D. Router CK1 is the DIS for L1 and a different router ( CK2 ) is the DIS for L2.
E. Router CK1 is the DIS for L2 and a different router ( CK2 ) is the DIS for L1.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation: It is the DIS that generates the pseudonode Link State Packet (LSP) and is denoted with a nonzero LSP-ID – R2.01
130000000000000000000000000000000000000000000000000000000000000000000000000000000000
001. The Certkiller IS-IS network is displayed below: Given the above diagram, which statement correctly
A. A=ISH; B=IIH; C:ESH
B. A=IIH; B=ESH; C=ISH
C. A=ISH; B=ESH; C:IIH
D. A=ESH; B=ISH; C=IIH
E. A=IIH; B=ISH; C=ESH Answer: C Explanation: OSI CLNS is a network layer service similar to bare IP service. A CLNS entity communicates over Connectionless Network Protocol (CLNP) with its peer CLNS entity. In the OSI architecture there are “systems”: Routers are ISs, and hosts are End Systems (ESs). ESs themselves have no routing information; they discover ISs (routers) by listening to Intermediate System Hellos (ISHs) and sending traffic to any random router. ESs send End System Hellos (ESHs); they do not choose a designated router to handle all traffic, and optimal routing is accomplished via redirects. ISs discover ESs by listening to ESHs, and ISs send ISHs to ESs. Intermediate System-to-Intermediate System Hello (IIH)-Used by routers to detect neighbors and form adjacencies. In addition to the IIH, which is an IS-IS protocol data unit (PDU), there is an ISH and an ESH, which are End System-to-Intermediate System (ES-IS) PDUs.
QUESTION 80
Drag and Drop Answer:
A. IIH
B. LSP
C. CLNS
D. CLNP
E. ISH
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation:
IIH (IS-IS Hello) – These packets create and maintain neighbor relationships and adjacencies.
There are three types of Integrated IS-IS Hello packet. The type of packet is defined in the fixed header
under the Type field and allows the packet to be handed off to the appropriate process.
QUESTION 81
In an IS-IS environment, what happens when the designated IS router crashes?
A. The elected backup designated router takes the place of the DIS indefinitely without the necessity of a new election.
B. The elected backup designated router takes the place of the DIS indefinitely without the necessity of a new election, until the original DIS comes back online.
C. A new election process occurs immediately, establishing a new DIS until a router with a higher priority or MAC address establishes an adjacency.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation: There is no backup designated router in IS-IS. Therefore, if the DIS meets an untimely death, a new DIS would be elected, based on prority or highest MAC address. If another router comes online with a higher priority, it will dislodge the existing DIS and rule in its place. This behavior is different from that of OSPF. Once a new DIS is elected, the link-state databases are purged and new LSPs are flooded. Reference: CCNP Self-Study CCNP BSCI Exam certification guide p.806
QUESTION 82
IS-IS Level 1 routers use LSPs for which purpose?
A. to build topology database for the local area only
B. to build topology database for the local and remote areas
C. to build topology database for remote areas
D. to build topology database for areas outside the AS
E. to establish with L1 IS’s
F. to establish adjacency with ES’s
Correct Answer: AE Section: (none) Explanation
QUESTION 83
In IS-IS routing, when would the use of Level 1 IS routing be required?
A. When routing between end systems and intermediate systems.
B. When routing between Level 1 areas in different domains.
C. When routing between Level 1 areas in the same domain.
D. When routing between intermediate systems in the same area.
E. When routing between intermediate systems in different areas.
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
Explanation:
Layer 1 links connect the routers in the same are, so layer 1 routing takes place between
intermediate systems in the same area. Layer 2 routing takes is between intermediate systems in different
areas.
QUESTION 84
Router CK1 is configured as a Level-1 IS-IS router. Which of the following routers can router CK1 establish an adjacency with? (Select two)
A. Any Level-1 IS in any area.
B. Any Level-2 IS in any area.
C. Any Level-1 IS in the same area.
D. Any Level-2 IS in the same area.
E. Any Level-1/Level-2 IS in the same area.
Correct Answer: CE Section: (none) Explanation
Explanation/Reference:
Explanation:
A Level-1 IS router can establish adjacencies with other routers Level-1 and Level-1/Level-2 IS
routers within the same area.
Incorrect Answers:
A: Level-1 adjacencies can only be established within the same area. B, D: Level-2 adjacencies require Level-2 IS routers.
QUESTION 85
Router CK1 is an IS-IS Level-1/Level2 router. Which of the following type of router will CK1 NOT be able to establish an adjacency with?
A. Any Level-1 IS in any area.
B. Any Level-2 IS in any area.
C. Any Level-1 IS in the same area.
D. Any Level-1/Level-2 IS in any area.
E. Any Level-1/Level-2 IS in the same area
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation: Level-1 routers can only establish adjacencies with other Level-1 routers within the same area. This is because L1 routers in different areas must connect through a L2 capable router, so two L1 routers must be in the same area in order to become adjacent. Incorrect Answers: B, C, D, E: IS-IS has a two-level hierarchy. Contiguous Level 2-capable routers form the backbone. Both Level 2 and Level 1 routers live in areas. Routers can be Level 1 (L1), Level 2 (L2), or both (L1/L2). Within Cisco IOS(r) Software, the default configuration is both Level 1 and Level 2 at the same time which allows an IS-IS network to run with minimal configuration in a plug-and-play fashion. L1/L2 routers act as 2 separate routers in terms of adjacency building, so it will become adjacent with other L2 routers, as well as other L1 routers that are in the same area.
QUESTION 86
What is periodically sent by a DIS on a LAN to ensure that all adjacent neigbors’ IS-IS link-state databases are synchronized?
A. complete SNP (CSNP)
B. partial SNP (PSNP)
C. database query
D. database description packet (DDP)
E. link-state summary
F. hello
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation:
All ISs maintain adjacencies with all other ISs on a broadcast network. DIS sends CSNP to all ISs. Periodic
CSNPs ensure the databases are synchronized.
Reference: CCNP Self-Study CCNP BSCI Exam Certification Guide p.350
QUESTION 87
Which of the following items must match in an OSPF hello packet in order for two routers to become OSPF neighbors? (Choose four)
A. Neighbors
B. Hello/dead intervals
C. Area ID
D. Address of DR/BDR
E. Stub area flag
F. Authentication password
Correct Answer: BCEF Section: (none) Explanation
Explanation/Reference:
Explanation:
The following hello parameters must match in order for two OSPF routers to become adjacent neighbors:
OSPF area number
OSPF area type, such as stub or NSSA flag
Subnet and subnet mask
OSPF HELLO and Dead timer values
Authentication values/passwords
QUESTION 88
Which three of the statements below correctly describe the characteristics of Autonomous Systems in routed networks? (Select three)
A. Within an AS, all routers must run either BGP or IBGP.
B. An AS uses exterior gateway protocols (EGPs) to exchange information with other autonomous systems.
C. An AS is a group of routers under the same technical administration.
D. Within an AS, routes learned through BGP can be redistributed using interior gateway protocols.
E. Within an AS, routes learned through an interior protocol cannot be redistributed using BGP to other autonomous systems.
Correct Answer: BCD Section: (none) Explanation
Explanation/Reference:
Explanation:
B Exterior Gateway Protocol (EGP) routing protocol used to connect between
autonomous systems.
The use of the term autonomous system in connection with BGP stresses the fact that the administration
of an autonomous system appears to other autonomous systems to have a single coherent interior routing
plan, and presents a consistent picture of those networks that are reachable through it.
BGP is used between autonomous systems Incorrect Answers:
A: Within an AS, all routers need not run either interior BGP or exterior BGP. While all IBGP peers need to be fully meshed, all routers within the network do not need to run BGP.
E: One of the major reasons for running BGP is so that the interior public IP networks within an AS can be distributed to other systems in the Internet via BGP. Reference: Building Scalable Cisco Networks (Cisco Press) page 313
QUESTION 89
The Certkiller network is displayed in the following diagram:
On the assumption that there is no IGP running in AS 64700 and synchronization is OFF, which router in AS 64700 is going to advertise the route to 183.32.0.0?
A. CK2 only
B. CK5 only
C. CK2 and CK5 only
D. CK2 , CK3 , and CK4 only
E. CK2 , CK3 , CK4 , and CK5
Correct Answer: AEDCB Section: (none) Explanation
QUESTION 90
Which of the following statements about IBGP routers are true? (Select one.)
A. They must be fully meshed.
B. They can be in a different AS.
C. They must be directly connected.
D. They do not need to be directly connected.
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
Explanation:
Since BGP runs over TCP, the IBGP speakers need to only be able to reach the other IBGP speakers via
a TCP connection across the network and do not need to be directly connected.
Even if two IBGP neighbors are separated by other routers, they will still become neighbors as long as
they are reachable via TCP.
Incorrect Answers:
A: Within an AS, all IBGP speakers must be configured as a full mesh. The only exceptions to this rule occur when router reflection or confederations are used.
B: IBGP routers need to be configured with the same AS number. The only exception to this rule is when BGP confederations are in use.
C: The routers only need to be reachable via a TCP connection.
QUESTION 91
Given the following choices, what kind of BGP router advertises routes to other IBGP neighbors?
A. Client
B. EBGP peer
C. Route reflector
D. cluster of clients
E. None of the above
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation: Ordinarily, with no route reflector, a full mesh of IBGP peers is required. Route reflectors modify the BGP split horizon rule by allowing the router configured as the route reflector to propagate routes learned by IBGP to other IBGP peers. Route reflectors reduce the number of BGP neighbor relationships in an AS.
QUESTION 92
BGP has been configured on some of the Certkiller routers. The BGP routing process relies on two different types of tables. What are they? (Select two)
A. An IP routing table.
B. A BGP topology table.
C. A BGP attribute table.
D. A table that contains BGP information received from and sent to other routers.
E. A combined table that contains both IP routes and BGP information received from and sent to other routers.
Correct Answer: BC Section: (none) Explanation
Explanation/Reference:
Explanation:
BGP uses one table for topology and another for attribute. The attribute table assigns values to various
attributes (weight, local preference, mult-exit discriminator, origin, AS path, next hop, & community) and
the topology table matches the values of these attributes to the various routes it can select.
QUESTION 93
Attributes are a means of sending additional route information over BGP. Which of the following statements are true regarding BGP attributes? (Select three)
A. MED is an optional attribute.
B. Origin is an optional attribute.
C. Next-hop is an optional attribute.
D. Local Preference is a discretionary attribute.
E. AS-Path is a well-known mandatory attribute.
F. Community is a well-known mandatory attribute.
Correct Answer: ADE Section: (none) Explanation Explanation/Reference:
Explanation:
A: The Multiple Exit Discriminator (MED) attribute is optional.
D: The local preference attribute is used to prefer an exit point from the local autonomous system (AS). It is a well-known discretionary attribute.
E: When a route advertisement passes through an autonomous system, the AS number is added to an ordered list of AS numbers that the route advertisement has traversed. The AS-Path attribute is mandatory. Note: BGP metrics are called path attributes. Optional attributes are recognized by some implementations, but are expected not to be recognized by everyone. A well-known mandatory attributes must be present in all update messages. The attributes defined by BGP include: Well-known mandatory attributes: AS-path Next-hop Origin Well-known discretionary attributes: Local preference Atomic aggregate Optional transitive attributes: Aggregator Communities Optional non-transitive attribute: Multi-Exit-Discriminator (MED) Incorrect Answers:
B: The origin attribute indicates how BGP learned about a particular route. It can have three values: IGP, EGP or incomplete. It is a required attribute.
C: The EBGP next-hop attribute is the IP address that is used to reach the advertising router. It is a required attribute.
F: The community attribute provides a way of grouping destinations, called communities, to which routing decisions can be applied. It is not mandatory. Reference: Border Gateway Protocol http://www.cisco.com/ univercd/cc/td/doc/cisintwk/ito_doc/bgp.htm
QUESTION 94
The BGP community attribute tags route for the sake of consistency in route filtering. Which of the answer choices below correctly describe the community attribute?
A. Optional and transitive.
B. Optional and non-transitive.
C. Well-known and mandatory.
D. Well-known and discretionary.
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation:
The community attribute is an optional transitive attribute that can be in the range 0 to
4,294,967,200. Each network can be a member of more than one community.
The attributes defined by BGP include:
Well-known mandatory attributes:
AS-path
Next-hop
Origin Well-known discretionary attributes:
Local preference
Atomic aggregate Optional transitive attributes:
Aggregator
Communities Optional non-transitive attribute:
Multi-Exit-Discriminator (MED)
QUESTION 95
You are a guest lecturer at the Certkiller Academy teaching some CCNP hopefuls about BGP. One of the students, Bob asks you what a BGP community is. How would you respond?
A. Communities are tagged by default in outgoing updates.
B. Communities can only be used within one autonomous system.
C. Communities are a means of tagging routes to ensure consistent filtering.
D. Communities perform summarization of blocks of contiguous network prefixes.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation:
A community is a group of destinations which share some common property. No tag is used by default.
Communities are a means of tagging routes to ensure consistent filtering or routeselectionpolicy.
Incorrect Answers
A: By default, all destinations belong to the general Internet community and are not tagged.
B: Each autonomous system administrator may define which communities a destination belongs to. Community information is passed on between different autonomous systems.
D: No summarization is performed by communities. Communications can be aggregated, however Reference: RFC 1997, BGP Communities Attribute
QUESTION 96
The Certkiller IBGP routers are configured in a fully meshed fashion. Which of the following are reasons why IBGP routers should peer with each other within a single AS? (Select two)
A. IBGP routes are not propagated to other EBGP peers.
B. IBGP routes that a router originates are propagated to other IBGP peers.
C. IBGP routes are propagated to other IBGP speakers in the AS that are not peers.
D. IBGP routes that are learned from an IBGP neighbor are propagated to only EBGP peers.
Correct Answer: AB Section: (none) Explanation
Explanation/Reference:
Explanation:
IBGP routes are propagated to all IBGP peers and only the IBGP peers. They are not exchanged with
EBGP peers, which is why all IBGP routers must be configured in a full mesh.
Note: You can configure Border Gateway Protocol (BGP) either within an autonomous system or between
different autonomous systems. When run within an autonomous system, it’s called internal BGP (IBGP).
When run between different autonomous systems, it’s called external BGP (EBGP).
QUESTION 97
Routers CK1 and CK2 belong to the same BGP peer group. Which two of the statements below are true regarding this BGP peer group? (Select two)
A. The peer group name is passed to other routers in the peer group.
B. A peer group is a group of BGP neighbors with different update policies.
C. The peer group name is only local to the router on which it is configured.
D. A peer group allows options that affect outbound updates to be overridden.
E. A peer group is a more efficient way to update BGP than configuration individual neighbors.
Correct Answer: CE Section: (none) Explanation
Explanation/Reference:
Explanation:
C: The peer group name is only local to the router it is configured on, it is not passed to any
other router.
E: Neighbors with the same update policies can be grouped into peer groups to simplify
configuration and make update calculation more efficient.
Incorrect Answers:
A: A BGP peer group does not necessarily have a name, it might have a number.
B: BGP peers use the same update policy.
D: A peer group does not have this option. Reference: RFC 1771, A Border Gateway Protocol 4 (BGP-4)
QUESTION 98
Routers CK1 and CK2 are configured as BGP peers. Which of the following is true regarding this peering relationship? (Select two)
A. Periodic keepalives are used to verify connectivity.
B. Incremental keepalives are used to verify connectivity.
C. It provides a reliable connection between two BGP routers.
D. It provides a “best effort” connection between two BGP routers.
Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
Explanation:
A: The default keepalive frequency is 60 seconds.
C: BGP peering provides a reliable connection between BGP routers. BGP utilizes the inherent
reliability of TCP, since all BGP sessions are maintained over TCP port 179.
Incorrect Answers:
B: Keepalives messages are not incremental.
D: BGP peers form a reliable connection.
QUESTION 99
Router CK1 is configured as a route reflector. What would happen if router CK1 would receive an update from a peer in a different autonomous system?
A. It discards the update.
B. It sends the update to all IBGP peers.
C. It sends the update only to non clients.
D. It sends the update only to route reflector clients.
E. It sends the update to all routers in the autonomous system.
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
Explanation:
When any BGP router receives an update from an EBGP peer, it will forward this routing
information to all IBGP peers. This is true for all EBGP routers, including route reflectors.
Reference:
QUESTION 100
Which of the following statements is true about BGP peer communications?
A. Communication between BGP peers runs over RIP.
B. Communication between BGP peers runs over TCP.
C. Communication between BGP peers runs over UDP.
D. Communication between BGP peers runs over ICMP.
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
Explanation:
BGP communicate through a TCP connection. TCP port 179 is reserved for BGP sessions.
Reference: Border Gateway Protocol
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/bgp.htm
QUESTION 101
The Certkiller network is considered to be a single autonomous system (AS). Which three of the following statements are characteristics of an autonomous system? (Select three)
A. It uses only Interior Gateway Protocols (IGPs).
B. EGPs are used to connect different autonomous systems.
C. It is a set of routers under a single technical administration.
D. It uses EGPs to route packets to other autonomous systems and IGPs to route packets within the autonomous system.
Correct Answer: Section: (none) Explanation
Both PDF and software format demos for Cisco 642-801 exam dumps are offered by Flydumps for free.You can try Cisco 642-801 free demo before you decide to buy the full version practice test.Cisco 642-801 exam dumps details are researched and produced by our Professional Certification Experts who are constantly using industry experience to produce precise, and logical.Cisco 642-801 dumps will not only help you pass in one attempt,but also save your valuable time.
Pass4itsure c_fsutil_60 dumps with PDF + Premium VCE + VCE Simulator: http://www.pass4itsure.com/c_fsutil_60.html