Ccna Routing And Switching: Scaling Networks (Ch.5-9)

Front 1

What is one reason to use the ip ospf priority command when the OSPF routing protocol is in use?

Back 1

to influence the DR/BDR election process

Front 2

What statement describes the reference bandwidth in OSPFv3?

Back 2

It should be changed if links faster than 100 Mb/s exist in the OSPF network.

Front 3

Routers receive hello packets that contain the router ID of the neighboring device.

Back 3

Init state

Front 4

On Ethernet links, a designated router (DR) and a backup designated router (BDR) is elected.

Back 4

Two-Way state

Front 5

Routers exchange DBD packets.

Back 5

Exchange state

Front 6

The command _______ is used to display only OSPFv3 learned routes.

Back 6

show ipv6 route ospf

Front 7

Which three parameters should match in order for a pair of routers to form an adjacency when running OSPFv2?

Back 7

OSPFv2 type of network, hello timer, subnet mask

Front 8

The command __________ is used when configuring an OSPFv2 router to redistribute only a static default route.

Back 8

default-information originate

Front 9

Consider the R1(config-if)# ip ospf message-digest-key 1 md5 CISCO-123 command. What is the function of the CISCO-123 portion of the command?

Back 9

It is used as a password.

Front 10

Which command will verify that a router running OSPFv3 has received a redistributed default static route from another OSPFv3 router?

Back 10

show ipv6 route

Front 11

OSPF routers within an area have the same ______.

Back 11

link-state information

Front 12

OSPF routers may have large ______ if routes are not summarized.

Back 12

routing tables

Front 13

Which statement describes a characteristic of convergence in an OSPF network?

Back 13

Once converged, a router can communicate with any network within or outside the OSPF autonomous system.

Front 14

When showip route command is entered, why are some of the entries marked O IA?

Back 14

They correspond to entries that are learned from other areas.

Front 15

A network administrator is configuring OSPFv3 on R1. Which command sequence is used to advertise the network that is attached to Gi0/0?

Back 15

int Gi0/0, ipv6 ospf area

Front 16

On which two types of OSPF routers can route summarization be configured?

Back 16

ABR, ASBR

Front 17

What are two reasons for creating an OSPF network with multiple areas?

Back 17

to reduce SPF calculations, to reduce use of memory and processor resources

Front 18

A type __ LSA identifies the ASBR and provides a route to it.

Back 18

4

Front 19

Routers first calculate the best path to destinations ______, then to other areas within the ________, then to destinations ________.

Back 19

within their own area, internetwork, external to the network

Front 20

Which type of routing table entry would indicate that an external route was redistributed into the multiarea OSPF process?

Back 20

O E2

Front 21

An __ routing table entry indicates a route, from within the same area, that was learned through OSPF updates.

Back 21

O

Front 22

An __ route is a route from another OSPF area.

Back 22

O IA

Front 23

An __ route is an external route, such as one redistributed from RIP, EIGRP, or a static route, that was redistributed into the OSPF process.

Back 23

O E2 or O E1

Front 24

An __ entry is for a static route. A C entry represents a directly connected network.

Back 24

S

Front 25

With multiarea OSPF, which OSPF router type has all interfaces in the same area?

Back 25

internal router

Front 26

An ______ router has all interfaces in the same area.

Back 26

internal

Front 27

T/F: The Area Border Router and the Autonomous System Boundary Router have interfaces in more than one area.

Back 27

True

Front 28

____ router is not an OSPF router type.

Back 28

Edge

Front 29

A router has six networks that are connected to it with network IDs of 192.168.0.0/24, 192.168.1.0/24, 192.168.2.0/24, 192.168.3.0/24, 192.168.4.0/24, and 192.168.5.0/24. After summarization of these six networks, how many LSAs would be sent to advertise the summary route or routes?

Back 29

two

Front 30

OSPF routers within the same area will have the same ______ databases.

Back 30

link-state

Front 31

Without route summarization, OSPF routers may have large ______.

Back 31

routing tables

Front 32

T/F: There is no automatic summarization of routes with OSPF.

Back 32

True

Front 33

____ can be implemented in a single area or in a two-layer multiarea hierarchy.

Back 33

OSPF

Front 34

______, especially in larger networks, is processor intensive.

Back 34

SPF recalculation

Front 35

_______ are able to communicate within or outside the autonomous system.

Back 35

Converged networks

Front 36

O IA routes have been learned by the ___ from external LSAs.

Back 36

ABR

Front 37

T/F: OSPFv3 specifies networks to be advertised under the router configuration mode.

Back 37

False

Front 38

OSPFv3 enables a network to be in OSPFv3 with the command _______ under the interface configuration mode.

Back 38

ipv6 ospf area

Front 39

T/F: If a router is not running OSPF, it is still configurable with an OSPF area.

Back 39

False

Front 40

OSPF areas have no direct relationship with the _______.

Back 40

Internet

Front 41

T/F: Multiple OSPF areas are required to connect to the Internet.

Back 41

False

Front 42

OSPF _____ help to decrease the demand for router memory and processing power by limiting OSPF protocol traffic, keeping link-state databases small, and requiring fewer SPF recalculations.

Back 42

areas

Front 43

T/F: Multiarea OSPF simplifies the configuration process.

Back 43

False

Front 44

OSPF uses ______ to build the LSDB and maintain routing tables.

Back 44

link-state advertisement messages (LSAs)

Front 45

The default reference-bandwidth for OSPF is _______.

Back 45

100 Mb/s

Front 46

The _______ must be changed to a higher value to accommodate networks with links faster that 100 Mb/s.

Back 46

reference-bandwidth

Front 47

The ____ state indicates that the routers in the domain have converged.

Back 47

Full

Front 48

T/F: The router IDs must be different for routers that participate in the same routing domain.

Back 48

True

Front 49

Routers need to be in the same subnet in order to form an _______.

Back 49

adjacency

Front 50

The router with the highest priority is elected as the ________.

Back 50

designated router (DR)

Front 51

OSPFv3 is used for ____ routing.

Back 51

IPv6

Front 52

The _______ command is used to display the IPv4 routing table.

Back 52

show ip route

Front 53

EIGRP uses the ______ command to initiate the static route redistribution.

Back 53

redistribute static

Front 54

Once OSPF neighbor adjacencies have formed, use the _______ command to determine which router was elected the DR and which router was elected the BDR.

Back 54

show ip ospf neighbors

Front 55

The value 2816 in (2170112/2816) is the "_______," the metric of the neighbor router to reach the destination network.

Back 55

reported distance

Front 56

The value 2170112 in (2170112/2816) is the _______, the metric cost to reach the destination network.

Back 56

feasible distance

Front 57

In an IP packet header, the field protocol number __ indicates TCP protocol is used in the encapsulated PDU.

Back 57

6

Front 58

In an IP packet header, the field protocol number __ indicates UDP protocol is used in the encapsulated PDU.

Back 58

17

Front 59

In an IP packet header, the field protocol number __ indicates EIGRP protocol is used in the encapsulated PDU.

Back 59

88

Front 60

In an IP packet header, the field protocol number __ indicates OSPF protocol is used in the encapsulated PDU.

Back 60

89

Front 61

EIGRP administrative distance for a summary route.

Back 61

5

Front 62

EIGRP administrative distance for an internal route.

Back 62

90

Front 63

EIGRP administrative distance for an external route.

Back 63

170

Front 64

Which two values are included by default in the calculation of an EIGRP metric?

Back 64

bandwidth, delay

Front 65

In the command router eigrp 100, what does the value 100 represent?

Back 65

autonomous system number

Front 66

EIGRP ______ packets are used to propagate routing information to other routers.

Back 66

update

Front 67

EIGRP _____ packets are used to form and maintain neighbor relationships between EIGRP-enabled routers.

Back 67

hello

Front 68

EIGRP _____ packets are used when reliable delivery is used and a confirmation needs to be returned.

Back 68

acknowledgment

Front 69

EIGRP _____ packets are used in response to a query packet, which searches for a route to a specific destination network.

Back 69

reply

Front 70

224.0.0.10 is the reserved IPv4 multicast address that is used by _____.

Back 70

EIGRP

Front 71

The bandwidth factor that is used to calculate the composite metric of the EIGRP is defined as the ________ of all outgoing interfaces between the source and destination.

Back 71

slowest bandwidth

Front 72

EIGRP for IPv6 will use the ______ that is configured on any enabled interface as the router ID.

Back 72

highest IPv4 address

Front 73

EIGRP for IPv6 uses the ______ as the destination address for EIGRP messages.

Back 73

all-EIGRP-routers link-local multicast address

Front 74

What two conditions will result in an EIGRP route going into the active state?

Back 74

The successor is down, The network has been recalculated

Front 75

Which two protocols are allowed to be routed by EIGRP as a consequence of the PDM feature?

Back 75

IPv4, IPv6

Front 76

______ allow EIGRP to route for various Layer 3 protocol packets.

Back 76

Protocol-dependent modules (PDM)

Front 77

TCP and UDP are Layer __ protocols.

Back 77

4

Front 78

______ is used by EIGRP to guarantee delivery of packets.

Back 78

RTP

Front 79

In an EIGRP routing table, code __ indicates that the route was learned from an EIGRP routing update.

Back 79

D

Front 80

Code __ indicates that the route is an external EIGRP route, that is, a route outside of the EIGRP routing domain.

Back 80

EX

Front 81

When an organization has ______, automatic summarization can cause inconsistent routing.

Back 81

discontiguous networks

Front 82

T/F: Automatic summarization prevents convergence of the routing table and increases the size of routing updates.

Back 82

False

Front 83

EIGRP authentication uses the ___ algorithm.

Back 83

MD5

Front 84

EIGRP authentication uses a ______.

Back 84

pre-shared key

Front 85

Using a route to the ______ interface prevents routing loops for any destination networks present in the summary route that do not actually exist.

Back 85

Null0

Front 86

This command is used to verify which routing protocol is configured, the AS number, and whether automatic summarization is enabled.

Back 86

show ip protocols

Front 87

An IPv6 default route is represented by ____.

Back 87

::/0

Front 88

A network administrator would use the ______ as-number percent command when there is a low bandwidth connection.

Back 88

ip bandwidth-percent eigrp

Front 89

By default, EIGRP will use only up to __ percent of an interface's bandwidth for EIGRP information.

Back 89

50

Front 90

T/F: EIGRP hello intervals should be less than or equal to EIGRP hold timers.

Back 90

True

Front 91

When the EIGRP ______ has expired, the neighbor adjacency will go down.

Back 91

hold timer

Front 92

T/F: EIGRP hello intervals and hold timers do not have to match for two routers to form an EIGRP adjacency.

Back 92

True

Front 93

Which command would a network engineer use to restore the IOS image c1900-universalk9-mz.SPA.152-4.M3.bin to a router?

Back 93

copy tftp: flash0:

Front 94

Which Cisco 12.4 IOS image package offers the most feature sets?

Back 94

Advanced Enterprise Services

Front 95

Which Cisco IOS 15 technology package would be needed to implement voice over IP?

Back 95

uck9

Front 96

A network engineer purchases, installs, and activates a license key on a Cisco 2911 ISR G2 router. What is the next step in the installation process?

Back 96

Reload

Front 97

Which Cisco IOS 15.0 technology package contains the IPsec framework components required to support the ISR G2 platforms?

Back 97

Security

Front 98

A ___ is a combination of the product ID, the serial number, and the hardware version.

Back 98

UDI

Front 99

Which Cisco IOS release followed Release 12.4?

Back 99

15