RC0-N06 認証試験 & RC0
NO.1 A network technician is performing a tracert command to troubleshoot a website-related
issue. The following output is received for each hop in the tracert:
1 * * * Request timed out.
2 * * * Request timed out.
3 * * * Request timed out.
The technician would like to see the results of the tracert command. Which of the following will allow
the technician to perform tracert on external sites but not allow outsiders to discover information
from inside the network?
A. Configure the firewall to allow echo reply in and echo request out of the network
B. Enable IGMP messages out and block IGMP messages into the network
C. Install a backdoor to access the router to allow tracert messages to pass through
D. Enable split horizon to allow internal tracert commands to pass through the firewall
Tracert makes use of ICMP echo packets to trace the route between two hosts. For the command to
be successful, the firewall has to allow incoming echo replies and outgoing echo requests.
NO.2 The ability to make access decisions based on an examination of Windows registry settings,
antivirus software, and AD membership status is an example of which of the following NAC features?
A. Non-persistent agents
B. Quarantine network
C. Posture assessment
D. Persistent agents
Network Admission Control (NAC) can permit or deny access to anetwork based on characteristics of
the device seeking admission, rather than just checking user credentials.
For example, a client's OS, Windows Registry settings, AD membership status, and version of antivirus
software could be checked against a set of requirements before allowing the client to access a
This process of checking a client's characteristics is called posture assessment.
NO.3 Which of the following is an example of an IPv4 address?
AnIPv4 address is notated as four decimal numbers each between 0 and 255 separated by dots
(xxx.xxx.xxx.xxx). Each number is known as an octet as it represents eight binary bits.
All four octets make up a 32-bit binary IPv4 address.
In this question, 192.168.1.254 is a valid IPv4 address.
NO.4 A network engineer needs to set up a topology that will not fail if there is an outage on a
single piece of the topology. However, the computers need to wait to talk on the network to avoid
congestions. Which of the following topologies would the engineer implement?
RC0-N06 ソフトウエア RC0-N06 改訂
Token Ring networks are quite rare today. Token Ring networks use the ring topology.
Despite being called a Ring topology, the ring is logical and the physical network structure often
forms a 'star' topology with all computers on the network connecting to a central multistation access
unit (MAU). The MAU implements the logical ring by transmitting signals to each node in turn and
waiting for the node to send them back before it transmits to the next node. Therefore, although the
cables are physically connected in a star, the data path takes the form of a ring. If any computer or
network cable fails in a token ring network, the remainder of the network remains functional. The
MAU has the intelligence to isolate the failed segment.
To ensure that the computers need to wait to talk on the network to avoid congestions, a
Token Ring network uses a 'token'. The token continually passes around the network until a
computer needs to send data. The computer then takes the token and transmits the data
beforereleasing the token. Only a computer in possession of the token can transmit data onto the
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