CCNP R&S Practice Exam 4 - MCQs

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When a switch running RSTP receives an 802.1D BPDU, what happens?

The BPDU is discarded or dropped.

An ICMP message is returned.

The switch begins to use 802.1D rules on that port.

The switch disables RSTP.

Which of the following is not a valid method for EtherChannel load balancing?

Source MAC address

Source IP address

IP precedence

Source and destination MAC addresses

What is the maximum number of access-layer switches that can connect into a single distribution-layer switch?
a. 1
b. 2
c. Limited only by the number of ports on the access-layer switch-
d. Limited only by the number of ports on the distribution-layer switch
e. Unlimited

Limited only by the number of ports on the access-layer switch-

Limited only by the number of ports on the distribution-layer switch

Unlimited

Which of these is a method for negotiating an EtherChannel?
a. PAP
b. CHAP
c. LAPD
d. LACP

PAP

CHAP

LAPD

LACP

In a switch spoofing attack, an attacker makes use of which one of the following?

The switch management IP address

CDP message exchanges

Spanning Tree Protocol

DTP to negotiate a trunk

Which process is used during RSTP convergence?

BPDU propagation

Synchronization

Forward timer expiration

BPDU

On which standard is RSTP based?

802.1w

802.1D

802.1Q

802.1s

What causes RSTP to view a port as a point-to-point port?

Port duplex

Port speed

Port media

Port priority

If Fast Ethernet ports are bundled into an EtherChannel, what is the maximum throughput supported on a Catalyst switch?

100 Mbps

200 Mbps

400 Mbps

800 Mbps

1600 Mbps

Which DSCP codepoint name usually is used for time-critical packets containing voice data?

Critical

Which of these methods distributes traffic over an EtherChannel?

Round robin

A function of address

Least-used link

A function of packet size

Which of the following is not a port state in RSTP?

Listening

Discarding

Learning

Forwarding

Which one of the following commands enables the use of RSTP?

spanning-tree mode rapid-pvst

no spanning-tree mode pvst

spanning-tree rstp

spanning-tree mode rstp

None. RSTP is enabled by default.

When port-based authentication is enabled globally, what is the default behavior for all switch ports?

Authenticate users before enabling the port.

Allow all connections without authentication.

Do not allow any connections.

There is no default behavior.

Which of the following events triggers a topology change with RSTP on a nonedge port?

A port comes up or goes down.

A port comes up.

A port goes down.

A port moves to the Forwarding state.

What are the most important aspects to consider when designing the core layer in a large network? (Choose all that apply.)

Low cost

a. Low cost
b.
Switches that can efficiently forward traffic, even when every uplink is at 100 percent capacity

High port density of high-speed ports

A low number of Layer 3 routing peers

The number of servers accessed by users

Which of the following standards defines the MST protocol?

802.1Q

802.1D

802.1w

802.1s

Which one of the following is a valid combination of ports for an EtherChannel?

Two access links (one VLAN 5, one VLAN 5)

Two access links (one VLAN 1, one VLAN 10)

Two trunk links (one VLANs 1 to 10, one VLANs 1, 11 to 20)

Two Fast Ethernet links (both full duplex, one 10 Mbps)

In what part of a Catalyst switch are VLAN ACLs implemented?

CAM

RAM

NVRAM

TCAM

Which one of the following types of traffic is sent securely over an LWAPP tunnel?

Control messages

User data

DHCP requests

802.11 beacons

Which of the following is not a characteristic of MST?

A reduced number of STP instances

Fast STP convergence

Eliminated need for CST

Interoperability with PVST+

Which of the following arrangements can be considered interVLAN routing?

One switch, two VLANs, one connection to a router.–

One switch, two VLANs, two connections to a router.

Two switches, two VLANs, two connections to a router.

All of these answers are correct.

What is the purpose of breaking a campus network into a hierarchical design?

To make the network predictable and scalable

To facilitate documentation

To follow political or organizational policies

To make the network more redundant and secure

When does an RSTP switch consider a neighbor to be down?

After the Forward timer expires

After the Max Age timer expires

After six BPDUs are missed

After three BPDUs are missed

Assume that CEF is active on a switch. What happens to a packet that arrives needing fragmentation?

The packet is switched by CEF and kept intact.

The packet is fragmented by CEF.

The packet is dropped.

The packet is sent to the Layer 3 engine.

How many distribution switches should be built into each switch block?

How can the EtherChannel load-balancing method be set?

Per EtherChannel

Per switch port

Globally per switch

Can’t be configured

What type of interface represents an EtherChannel as a whole?

Channel

Port

Port channel

Channel port

Which of the following is a valid EtherChannel negotiation mode combination between two switches?

PAgP auto, PAgP auto

PAgP auto, PAgP desirable

on, PAgP auto

LACP passive, LACP passive

What logical operation is performed to calculate EtherChannel load balancing as a function of two addresses?

AND

XOR

NOR