300-320 Practice Questions

By Author: Kristi B. McLeod
Total Articles: 155
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Question: 1

An organization is designing the IP allocation of a new site. It currently has 12 separate IP segments. Each segment must be /24, accommodate 25% of growth, and be easily summarized.
Which summarized IP block can be subnetted to meet these requirements?

A. /18
B. /19
C. /20
D. /21

Answer: C

Question: 2

Summary address blocks can be used to support which network application?

A. QoS
B. IPsec tunneling
C. Cisco TrustSec
D. NAT
E. DiffServ

Answer: D

Question: 3

A network design engineer has been asked to reduce the size of the SPT on an IS-IS broadcast network. Which option should the engineer recommend to accomplish this task?

A. Configure the links as point-to-multipoint.
B. Configure QoS in all links.
C. Configure a new NET address.
D. Configure the links as point-to-point.

Answer: D

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... Question: 4

What are three primary components in IS-IS fast convergence? (Choose three.)

A. event propagation
B. LSP flooding
C. fast hellos
D. matching MTUs
E. updating RIB and FIB
F. SPF calculation

Answer: A,E,F

Question: 5

A campus network utilizes EIGRP to connect to several remote branch offices.
Which configuration should be established on all branch routers to improve routing scalability and performance?

A. Configure authentication between the campus and branch offices.
B. Enable stub routing on all branch routers.
C. Adjust EIGRP k-values to utilize delay.
D. Utilize offset lists to direct traffic more efficiently.

Answer: B

Question: 6

Which two design principles should be followed to scale EIGRP properly? (Choose two.)

A. Ensure that the network design follows a structured hierarchical topology.
B. Utilize route summarization on edge devices.
C. Implement multiple autonomous systems, regardless of the size of the network.
D. Tune EIGRP delay metric on all core devices.
E. Configure offset lists on the network border.

Answer: A,B

Question: 7

Which action can be taken on a multiaccess segment with OSPF speakers to reduce the performance impact during widespread convergence events?

A. Separate the network into multiple areas for each new multiaccess segment.
B. Enable LSA throttling in the core to slow link state advertisement updates during times of network instability.
C. Ensure that the elected DR or BDR router can support high-volume convergence events.
D. Verify that fewer than 50 OSPF speakers are on the segment.

Answer: C

Question: 8

An engineer is attempting to improve OSPF network performance and discovers that the entire SPT recomputes whenever a type 1 or type 2 LSA is received within an area.
Which action can optimize SPT operations?

A. Tune LSA throttling thresholds.
B. Enable incremental SPF.
C. Configure totally stubby areas throughout the domain.
D. Summarize networks on all ABRs.

Answer: B

Question: 9

Which option does best practice dictate for the maximum number of areas that an OSPF router should belong to for optimal performance?

A. 1
B. 2
C. 3
D. 4
E. 5

Answer: C

Question: 10

A BGP network is having difficulty scaling with the full mesh peer requirement. What two iBGP alternates can scale BGP appropriately? (Choose two.)

A. communities
B. route reflectors
C. confederations
D. peer groups
E. peer templates

Answer: B,C

Question: 11

Which command can you enter to inject BGP routes into an IGP?

A. redistribute bgp
B. redistribute static
C. redistribute static subnet
D. default-information originate

Answer: A

Question: 12

Which two features can you implement to control which networks are advertised by a BGP router? (Choose two.)

A. prefix lists
B. route maps
C. policy maps
D. router SNMP statements
E. crypto maps

Answer: A,B

Question: 13

What are two benefits of using 6to4 as an IPv6 transition method? (Choose two.)

A. 6to4 tunnels allow isolated IPv6 domains to be remotely connected over IPv4 networks.
B. Manual configuration (scalability) is easier.
C. Point-to-multipoint automatic tunneling (automatic 6to4) is available.
D. An infinite number of address spaces are allocated to an IPv6 subnet.
E. Globally unique IPv4 addresses are not required.

Answer: A,C

Question: 14

A network engineer is designing a network that must incorporate seamless failover when a link failure occurs between the core and distribution layer. What two technologies will allow this? (Choose two.)

A. ECMP
B. RSTP
C. MEC
D. GLBP
E. HSRP

Answer: A,C

Question: 15

Which two types of authentication mechanisms can be used by VRRP for security? (Choose two.)

A. SHA-1
B. MD5
C. SHA-256
D. plaintext authentication
E. PEAP

Answer: B,D

Question: 16

A network engineer is designing an access layer that requires all uplinks to be active. Furthermore, VLANs must span across the entire switch block. What design fulfills this requirement?

A. Layer 2 looped triangle
B. Layer 2 looped square
C. Layer 2 loop-free U
D. Layer 2 loop-free inverted U

Answer: D

Question: 17

What are two of Cisco's best practices at the access layer to ensure rapid link transitions and VLAN consistency? (Choose two.)

A. Deploy RPVST
B. Deploy MSTP
C. Utilize VTP in server/client mode
D. Utilize VTP in transparent mode
E. VLANs span entire network
F. Portfast applied on distribution uplinks

Answer: A,D

Question: 18

In what situation must spanning-tree be implemented?

A. when first hop redundancy protocol exists with redundant Layer 2 links between distribution switches
B. when a VLAN spans access layer switches to support business applications
C. when trunks need to extend multiple VLANs across access switches
D. when it is necessary to speed up network convergence in case of link failure

Answer: A

Question: 19

Which feature supports multiple routing tables with overlapping networks on a single device?

A. VRF
B. Metro Ethernet
C. RSTP
D. VSS

Answer: A

Question: 20

DRAG DROP
Drag the task on the left to the appropriate layer category on the right.

Answer: