642-813 Q&A – Mix Practice Questions (161-165)

Section 6 – Mix Practice Questions

QUESTION NO: 161
Which two statements are true about voice packets in a LAN? (Select two)
A. Voice traffic data flow involves large volumes of large packets.
B. Because a packet loss involves a small amount of data, voice traffic is less affected by packet losses than traditional data traffic is.
C. Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media portion of the VoIP communication.
D. Voice packets are very sensitive to delay and jitter.
E. Voice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.
Answer: C,D

QUESTION NO: 162
Which set of statements about Spanning Tree Protocol default timers is true?
A. The hello time is 2 seconds.
The forward delay is 10 seconds.
The max_age timer is 15 seconds.
B. The hello time is 2 seconds.
The forward delay is 15 seconds.
The max_age timer is 20 seconds.
C. The hello time is 2 seconds.
The forward delay is 20 seconds.
The max_age timer is 30 seconds.
D. The hello time is 5 seconds.
The forward delay is 10 seconds.
The max_age timer is 15 seconds.
E. The hello time is 5 seconds.
The forward delay is 15 seconds.
The max_age timer is 20 seconds.
Answer: B

QUESTION NO: 163
Which statement correctly describes enabling BPDU guard on an access port that is also enabled for PortFast?
A. Upon startup, the port transmits 10 BPDUs. If the port receives a BPDU, PortFast and BPDU guard are disabled on that port and it assumes normal STP operation.
B. The access port ignores any received BPDU.
C. If the port receives a BPDU, it is placed into the error-disable state.
D. BPDU guard is only configured globally and the BPDU filter is required for port-level configuration.
Answer: C

QUESTION NO: 164
Which statement is true about RSTP topology changes?
A.Any change in the state of the port generates a TC BPDU.
B.Only nonedge ports moving to the forwarding state generate a TC BPDU.
C.If either an edge port or a nonedge port moves to a block state, then a TC BPDU is generated.
D.Only nonedge ports moving to the blocking state generate a TC BPDU.
E.Any loss of connectivity generates a TC BPDU.
Answer: B

QUESTION NO: 165
Which statement best describes first-hop redundancy protocol status, given the command output in
the exhibit?
Switch# show ip arp
ProtocolAddressAge(min)Hardware AddrTypeInterface
Internet172.16.233.2290000.0c59.f892ARPAVlan10
Internet172.16.233.2180000.0c63.1300ARPAVlan10
Internet172.16.233.19-0000.0c07.ac0bARPAVlan10
A. The first-hop redundancy protocol is not configured for this interface.
B. HSRP is configured for group 10.
C. HSRP is configured for group 11.
D. VRRP is configured for group 10.
E. VRRP is configured for group 11.
F. GLBP is configured with a single AVF.
Answer: C

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