Exam 291-300

Question 1

Which of the following is the prefix for a link-local IPv6 address?

A. FE80::/10
B. FF00::/8
C. 2FFE::/16
D. FEEF:/12

Answer 1

A. FE80::/10

Question 2

Lisa, a technician, has configured a new switch that is remotely accessed using SSH. The switch is working properly but
cannot be accessed remotely. Which of the following items is MOST likely missing in the configuration?
A. Port speed
B. Cryptokey
C. Data VLAN
D. NAT/PAT

Answer 2

B. Cryptokey

Question 3

Zach, a technician, suspects a duplicate IP address assignment on the network. Which of the following resources can be
used to verify this problem?

A. Network map
B. Environmental monitor
C. Placement map
D. Syslog

Answer 3

D. Syslog

Question 4

A technician needs to limit the amount of broadcast traffic on a network and allow different segments to communicate
with each other. Which of the following options would satisfy these requirements?

A. Add a router and enable OSPF.
B. Add a layer 3 switch and create a VLAN.
C. Add a bridge between two switches.
D. Add a firewall and implement proper ACL.

Answer 4

B
Explanation We can limit the amount of broadcast traffic on a switched network by dividing the computers into logical network
segments called VLANs.
A virtual local area network (VLAN) is a logical group of computers that appear to be on the same LAN even if they are
on separate IP subnets. These logical subnets are configured in the network switches. Each VLAN is a broadcast domain
meaning that only computers within the same VLAN will receive broadcast traffic.
To allow different segments (VLAN) to communicate with each other, a router is required to establish a connection
between the systems. We can use a network router to route between the VLANs or we can use a ‘Layer 3’ switch. Unlike
layer 2 switches that can only read the contents of the data-link layer protocol header in the packets they process, layer 3
switches can read the (IP) addresses in the network layer protocol header as well.

Question 5

Which of the following occurs when antenna gain is increased on an access point?

A. Connection speeds decrease
B. Throughput decreases
C. Cell size increases
D. Attenuation increases

Answer 5

C. Cell size increases

Question 6

Several users from the same building are reporting connectivity issues. The SFP at that building’s IDF switch is showing
a link light, but there is no link light to the corresponding switch’s SFP at the MDF. Which of the following is the MOST
likely cause?

A. A crossover cable is being used.
B. DB loss is too high on all strands.
C. Only TX or RX strand is working.
D. TX and RX are reversed.

Answer 6

C. Only TX or RX strand is working.

Question 7

A network technician is troubleshooting intermittent issues with VoIP call quality. A throughput tester can help assess
the functionality of which of the following?

A. LLDP
B. VLAN tagging
C. QoS
D. SIP trunking

Answer 7

C. QoS

Question 8

When configuring a WAP for a SOHO, which parameter will BEST limit access to the office area?

A. Signal strength
B. SSID enable
C. Encryption
D. Password hardening

Answer 8

A. Signal strength

Question 9

169.254.0.100 is an IP address which would MOST likely come from which of the following?

A. CIDR
B. DHCP
C. APIPA
D. DNS

Answer 9

C. APIPA

Question 10

The software in a virtualized environment that controls resource allocation and allows multiple operating system guests
to run on the same physical platform is known as the:

A. hypervisor.
B. LPAR.
C. broker.
D. VDI.

Answer 10

A. hypervisor.