Download New Updated (Spring 2015) Cisco 400-101 Actual Tests 161-170

Ensurepass

 

QUESTION 161

Which attribute is not part of the BGP extended community when a PE creates a VPN-IPv4 route while running OSPF between PE-CE?

 

A.

OSPF domain identifier

B.

OSPF route type

C.

OSPF router ID

D.

MED

E.

OSPF network type

 

Correct Answer: E

 

 

QUESTION 162

Which three factors does Cisco PfR use to calculate the best exit path? (Choose three.)

 

A.

quality of service

B.

packet size

C.

delay

D.

loss

E.

reachability

F.

administrative distance

 

Correct Answer: CDE

 

 

QUESTION 163

Refer to the exhibit. While configuring AAA with a local database, users can log in via Telnet, but receive the message “error in authentication” when they try to go into enable mode. Which action can solve this problem?

 

clip_image001

 

A.

Configure authorization to allow the enable command.

B.

Use aaa authentication login default enable to allow authentication when using the enable command.

C.

Verify whether an enable password h
as been configured.

D.

Use aaa authentication enable default enable to allow authentication when using the enable command.

 

Correct Answer: C

 

 

QUESTION 164

What is a reason to use DHCPv6 on a network that uses SLAAC?

 

A.

To get a record of the IPs that are used by the clients

B.

To push DNS and other information to the clients

C.

No reason, because there is no need for DHCPv6 when using SLAAC

D.

Because DHCPv6 can be used only in stateful mode with SLAAC to record the IPs of the clients

E.

Because DHCPv6 can be used only in stateless mode with SLAAC to record the IPs of the clients

F.

Because DHCPv6 is required to use first-hop security features on the switches

 

Correct Answer: B

 

 

QUESTION 165

Which statement is true about Fast Link Pulses in Ethernet?

 

A.

They are used during collision detection.

B.

They are used only if the media type is optical.

C.

They are part of UniDirectional Link Detection.

D.

They are used during autonegotiation.

 

Correct Answer: D

 

 

QUESTION 166

Which statement is true regarding UDLD and STP timers?

 

A.

The UDLD message timer should be two times the STP forward delay to prevent loops.

B.

UDLD and STP are unrelated features, and there is no relation between the timers.

C.

The timers need to be synced by using the spanning-tree udld-sync command.

D.

The timers should be set in such a way that UDLD is detected before the STP forward delay expires.

 

Correct Answer: D

 

 

QUESTION 167

Which switching technology can be used to solve reliability problems in a switched network?

 

A.

fragment-free mode

B.

cut-through mode

C.

check mode

D.

store-and-forward mode

 

Correct Answer: D

 

 

QUESTION 168

What is the most efficient way to confirm whether microbursts of traffic are occurring?

 

A.

Monitor the output traffic rate using the show interface command.

B.

Monitor the output traffic rate using the show controllers command.

C.

Check the CPU utilization of the router.

D.

Sniff the traffic and plot the packet rate over time.

 

Correct Answer: D

 

 

QUESTION 169

What is a cause for unicast flooding?

 

A.

Unicast flooding occurs when multicast traffic arrives on a Layer 2 switch that has directly connected multicast receivers.

B.

When PIM snooping is not enabled, unicast flooding occurs on the switch that interconnects the PIM-enabled routers.

C.

A man-in-the-middle attack can cause the ARP cache of an end host to have the wrong MAC address. Instead of having the MAC address of the default gateway, it has a MAC address of the man-in-the-middle. This causes all traffic to be unicast flooded through the man-in-the-middle, which can then sniff all packets.

D.

Forw
arding table overflow prevents new MAC addresses from being learned, and packets destined to those MAC addresses are flooded until space becomes available in the forwarding table.

 

Correct Answer: D

 

 

QUESTION 170

Refer to the exhibit. All switches have default bridge priorities, and originate BPDUs with MAC addresses as indicated. The numbers shown are STP link metrics. Which two ports are in blocking state after STP converges? (Choose two.)

 

clip_image002

 

A.

the port on switch SWD that connects to switch SWE

B.

the port on switch SWF that connects to switch SWG

C.

the port on switch SWD that connects to switch SWC


D.

the port on switch SWB that connects to switch SWD

 

Correct Answer: CD

 

Free VCE & PDF File for Cisco 400-101 Real Exam

Instant Access to Free VCE Files: CCNA | CCNP | CCIE …
Instant Access to Free PDF Files: CCNA | CCNP | CCIE …