CCIE-ROUTING AND SWITCHING QUALIFICATION (Written exam) : 350-001 Exam
Written Exam
General Information
CCIE Routing and Switching Written Exam #350-001
The written exam is a two-hour, multiple choice test with 100 questions covering Routing and Switching networking theory related to topics such as IP, IP routing, non-IP desktop protocols, bridging and switch-related technologies, and includes some equipment commands. The exam is closed book and no outside reference materials are allowed.
Beta Exams
Each written exam version is offered first in beta form at a discounted cost of US$50. Beta exams are scheduled as you would other written exams and are available at all worldwide testing locations. A passing grade on the beta qualifies a candidate to schedule the lab exam. Results, however, are typically not available until six to eight weeks after the close of the beta. A candidate may attempt the beta exam only once during the beta period.
Cost
Written exams are administered by independent vendors at cost of US$315. Costs may vary due to exchange rates and local taxes (VAT, GST).
Expiration
Candidates must make an initial attempt of the CCIE lab exam within 18 months of passing the CCIE written exam. Valid passing scores on written exams expire after 18 months.
Locations
Written exams are taken at any worldwide VUE testing facility. See their websites for more details.
Results
Written exam results are Pass/Fail and are available immediately following the exam. The passing score is set by statistical analysis and is subject to periodic change.
Retakes
Candidates must wait five days between attempts at the written exam. Once a candidate has passed the exam, he or she may not take the same exam again (for recertification purposes) for at least 180 days.
Exam Number/Code: 350-001
Exam Name:CCIE-ROUTING AND SWITCHING QUALIFICATION (Written exam)
“CCIE-ROUTING AND SWITCHING QUALIFICATION (Written exam)”, also known as 350-001 exam, is a Cisco certification. With the complete collection of questions and answers, Actualtests has assembled to take you through 361 Q&As to your 350-001 Exam preparation. In the 350-001 exam resources, you will cover every field and category in CCIE helping to ready you for your successful Cisco Certification.
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Exam DetailsThe written exam is a two-hour, multiple choice test with 100 questions covering Routing and Switching networking theory related to topics such as IP, IP routing, non-IP desktop protocols, bridging and switch-related technologies, and includes some equipment commands. The exam is closed book and no outside reference materials are allowed.
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QUESTION 11
As the administrator of the Certkiller network, you are planning to implement a dynamic
routing protocol to replace the static routes. When comparing link state and distance
vector routing protocols, what set of characteristics best describe Link-State routing
protocols?
A. Fast convergence and lower CPU utilization
B. High CPU utilization and prone to routing loops
C. Slower convergence time and average CPU utilization
D. Fast convergence and greater CPU utilization
E. None of the above
Answer: D
Explanation:
Link State protocols, such as IS-IS and OSPF, converge more quickly than their distance
vector counterparts, through the use of flooding and triggered updates. In link state
protocols, changes are flooded immediately and computed in parallel.
Triggered updates improve convergence time by requiring routers to send an update
message immediately upon learning of a route change. These updates are triggered by
some event, such as a new link becoming available or an existing link failing.
The main drawbacks to Link State protocols are the amount of CPU overhead involved in
calculating route changes and memory resources that are required to store neighbor
tables, route tables, and a complete topology map.
QUESTION 12
A customer has a router with an interface connected to an OSPF network, and an
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interface connected to an EIGRP network. Both OSPF and EIGRP have been
configured on the router. However, routers in the OSPF network do not have route
entries in the route table for all of the routers form the EIGRP network. The
default-metric under OSPF is currently set to 16. Based on this information, what is
the most likely cause of this problem?
A. The ’subnets’ keyword was not used under the OSPF process when redistributing
EIGRP into OSPF.
B. EIGRP is configured as a Stub area, and therefore routes will not be redistributed
unless a route-map is used to individually select the routes for redistribution.
C. The ’subnets’ keyword was not used the EIGRP process when redistributing between
OSPF into EIGRP.
D. The default metric for OSPF is set to 16, and therefore all EIGRP routes that are
redistributed are assigned this metric, and are automatically considered unreachable by
EIGRP.
E. A metric was not assigned as part of the redistribution command for EIGRP routes
redistributing into OSPF, and the default behavior is to assign a metric of 255, which is
considered unreachable by OSPF.
Answer: A
Explanation:
When routes are redistributed into OSPF, only routes that are not subnetted are
redistributed if the subnets keyword is not specified. It is generally a good idea to include
the “subnets” keyword at all times when redistributing routes from other protocols into
OSPF.
Incorrect Answers:
B. There is nothing in this question to lead us to believe that stub networks are being
used at all. Even if they were, route maps would not be needed to redistribute the EIGRP
and OSPF routes.
C. The “subnets” keyword needs to be placed under the OSPF process, not the EIGRP
process.
D. EIGRP routes with a metric of 16 are acceptable, and not considered unreachable. If
the routing protocol used was RIP instead of EIGRP then this would be true.
E. When redistributing from one OSPF process to another OSPF process on the same
router, the metric will be carried through from one process to the other if no metric value
is specified. When redistributing other processes to an OSPF process, the default metric
is 20 when no metric value is specified.
QUESTION 13
The Certkiller WAN consists of an OSPF network portion and an EIGRP routed
portion as shown in the display below:
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Given the network and OSPF configuration shown in the exhibit, what statement is
true regarding traffic flowing from PC-A to PC-B?
A. Traffic will only flow on the shortest, low-speed path, PC-A-H-D-B-A-PC-B.
B. Traffic will flow on both of the high speed paths (PC-A-H-F-C-B-A-PC-B and
PC-A-H-G-E-B-A-PC-B) but not the slow-speed path.
C. Traffic will flow on all three of the paths.
D. Traffic will flow uni-directionally on one of the high-speed paths form PC-A to PC-B,
and uni-directionally on the other high-speed path from PC-B to PC-A.
E. Traffic will flow bi-directionally on only one of the high-speed paths, and the path
selected will be based on the OSPF process IDs.
Answer: B
Explanation:
The default metric for OSPF is 100,000,000 divided by the bandwidth. For each 100
Mbps fast Ethernet link, the OSPF cost will be 1. For the slower, 10 Mbps Ethernet link,
the OSPF cost will be 10, so the traffic will be routed around the slower link to the high
speed links even though more hops are involved, because each high speed link across the
entire OSPF cloud will have a total cost of 3 (1+1+1). This is true even though the
redistributed routes are external type-2 routes. By default, OSPF will load balance traffic
across up to four equal cost paths. Therefore, choice B is correct in that traffic will utilize
both high speed links.
QUESTION 14
The Certkiller network is redistributing IS-IS and RIP version 2 routes as shown in
the diagram below:
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Routers B and G both advertise RIP learned routes into IS-IS. Network is added to
Router A via an Ethernet port and Router B is the First router to learn about this
new network. After the network has converged, what path will Router G take to
reach network 200.155.16.16?
A. Router G takes the direct path through router A.
B. Router G takes the path through routers, F, E, D, C, B, A.
C. Router G will oscillate between the path through router A and the path through router
F.
D. Router G and router B will both think the other router is the best path to network
200.155.16.16, causing a routing loop.
E. The answer can not be determined unless the default-metric used in the redistribution
is known.
Answer: B
Explanation:
When a router receives identical route and subnet mask information for a given network
from two different routing protocols, the route with the lowest administrative distance is
chosen. IS-IS has a lower administrative Distance than RIP, so this route is installed in
the routing table and used, even though it is obviously not the optimal route in this
specific example.
QUESTION 15
The Certkiller network uses multiple IP routing protocols with redistribution, as
shown in the diagram below:
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Area 51 is configured as a NSSA Totally Stub, using the “area 51 stub
no-summary” command. Which routers are in the routing table of Router D?
A. Redistributed EIGRP and RIP routes, one OSPF default route, OSPF inter and
intra-area routes
B. Redistributed EIGRP routes and OSPF intra-area routes
C. Redistributed EIGRP routes and OSPF inter and intra-area routes
D. Redistributed EIGRP routes, an OSPF default route and OSPF intra-area routes
E. Redistributed EIGRP and RIP routes and an OSPF default route
Answer: D
Explanation:
In the network diagram above, Area 51 is defined as a totally NSSA stub area. EIGRP
routes cannot be propagated into the OSPF domain because redistribution is not allowed
in the stub area. However, if we define area 51 as NSSA, we can inject EIGRP routes
into the OSPF NSSA domain by creating type 7 LSAs. Redistributed RIP routes will not
be allowed in area 51 because NSSA is an extension to the stub area. The stub area
characteristics still exist, including no type 5 LSAs allowed.
There are two ways to have a default route in an NSS
A. When you configure an area as
NSSA, by default the NSSA ABR does not generate a default summary route. In the case
of a stub area or an NSSA totally stub area, the NSSA ABR does generate a default
summary route. In addition, all OSPF intra-area routes are allowed in a totally NSSA
area.
Incorrect Answers:
A, E. The RIP will become external OSPF routes after the redistribution takes place.
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Since External OSPF routes from a different area are not injected into NSSA areas, no
RIP routes will be seen on router D.
B. By making the not-so-stubby area a totally not-so-stubby area, a default route is
injected, so D is the preferred choice over B.
C. Inter-area routes are not seen on routers within a totally NSSA.
QUESTION 16
Four Certkiller routers are connected together as shown below:
Please study the exhibit above carefully. The Certkiller network is using a classful
routing protocol. Subnet 10.1.1.0/24 is sourced by Router Certkiller 1 and Advertised
to Router Certkiller 2. Router Certkiller 2 the sends updates to Router Certkiller 3,
who forwards updates to Router Certkiller 4, which propagates routing information
beyond. With regards to only the 10.1.1.0/24 subnet, what does Router Certkiller 4
advertise out for its 10.1.4.0/24 interface?
A. 10.0.0.0/8
B. 10.0.0.0
C. No update is sent regarding the 10.1.1.0/24 subnet
D. 10.1.1.0
E. 10.1.1.0/24
F. None of the above
Answer: C
Explanation:
Cisco routers running a classful routing protocol will automatically summarize at
network boundaries. In this case, Certkiller 2 will advertise the summarized 10.0.0.0/8
network to Certkiller 3. Since Certkiller 3 will have a more specific route to the 10/0.0.0/8
network, he will not advertise this route to Certkiller 4, so Certkiller 4 will not receive
either the 10.1.1.0/24 or the 10.0.0.0/8 route.
QUESTION 17
You want to improve the performance of the routers in the Certkiller network.
Which of the following could you use to minimize router resource requirements and
improves manageability? (Select two)
A. Resource Reservation Protocol
B. CPU optimization
C. Simple Network Management Protocol (SNMP)
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D. Auto-summarization
E. Prefix Aggregation
Answer: D, E
Explanation:
Automatic route summarization and prefix aggregation is always a recommended best
design practice whenever possible, as it means less routing table entries for the router to
store. For example, many subnets can be hidden behind a single routing table entry,
making these entries smaller, and routing more efficient).
QUESTION 18
When a router within the Certkiller network comes to make a forwarding decision,
the ______________ always wins among the routes installed in the routing table.
A. Administrative Distance
B. Router ID
C. Longest prefix match
D. Routing process ID
E. Peer ID
F. None of the above
Answer: C
Explanation:
Making a forwarding decision actually consists of three sets of processes: the routing
protocols, the routing table, and the actual process which makes a forwarding decision
and switches packets. These three sets of processes are illustrated, along with their
relationship, below:
The longest prefix match always wins among the routes actually installed in the routing
table, while the routing protocol with the lowest administrative distance always wins
when installing routes into the routing table.
Reference:
www.cisco.com/en/US/tech/ CK3 65/technologies_tech_note09186a0080094823.shtml
QUESTION 19
Refer to the following exhibits:
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Based upon the partial Certkiller router configuration and the “show ip route
connected” output shown in the exhibits above, which RIPv2 updates will be sent
out of the Serial2/0.101 sub-interface from router Certkiller 4? (Select all that apply)
A. 192.168.1.83/32
B. 192.168.1.84/30
C. 192.168.1.0/24
D. 192.168.1.80/30
E. 192.168.1.84/32
F. 192.168.1.82/32
G. 192.168.1.80/32
H. 192.168.1.81/32
I. None of the above
Answer: D, E
Explanation:
By default, RIP version 2 summarizes networks automatically. In the configuration
example above, automatic summarization has been disabled. However, the “IP summary
address” configuration statement takes precedence over automatic network summary, so
the individual host loopback addresses will be summarized into one 192.168.1.80/30
network route. This will summarize the 192.168.1.80, 192.168.1.81, 192.168.1.82, and
192.168.1.83 networks into one route, leaving only the 192.168.1.84 network. This single
host route will then also be advertised, since the automatic summarization feature was
disabled.
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QUESTION 20
What option is the best way to apply Classless Inter-Domain Routing (CIDR) if
Certkiller , Inc wants to summarize the following addresses: 200.1.0.0/16, 200.2.0.0/16,
200.3.0.0/16, 200.5.0.0/16, 200.6.0.0/16, 200.7.0.0/16?
A. 200.0.0.0/14, 200.4.0.0/15, 200.6.0.0/16, 200.7.0.0/16
B. 200.0.0.0/16
C. 200.4.0.0/14, 200.2.0.0/15, 200.2.0.0/16, 200.1.0.0/16
D. 200.4.0.0/14, 200.2.0.0/15, 200.1.0.0/16
E. 200.0.0.0/18
F. None of the above
Answer: D
Explanation:
The Network 200.4.0.0/14 will encompass the 200.5.0.0, 200.6.0.0 and 200.7.0.0
networks. The second summarization, 200.2.0.0/15 will take care of both the 200.2.0.0
and 200.3.0.0 networks. Finally, the last network is needed in order to include the only
remaining network, which is 200.1.0.0/16. This will summarize all 6 networks using only
3 statements.
Incorrect Answers:
A. Although this answer will also fulfill the needs of summarizing all 6 networks, it is not
the most efficient way as 4 network entries are needed here, instead of only 3 in answer
choice D.
B. This will mean that only the 200.0.0.0/16 network is advertised, which is not even one
of the networks that need to be summarized.
C. This is also not the most efficient choice, as the third statement (200.2.0.0/16) is
redundant, since this network is already included in the 200.2.0.0/15 summarized route.
E. This network mask would not include all of the needed networks.
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