Best Comptia Network+ Questions

The Best Comptia Network+ Questions examples!

QUESTION 1

The network install is failing redundancy testing at the MDF. The traffic being moved is a mixture of multicast and unicast signals.Which of the following would BEST handle the rerouting caused by the break of service?

A. Layer 3 switch

B. Proxy server

C. Layer 2 switch

D. Smart hub

Explanation: Multicast is a layer 3 feature of IPv4 & IPv6. Therefore, you would need a

layer 3 switch (or a router) to reroute the traffic.

QUESTION 2

Which network device uses ACLs to limit unapproved access into company systems?

A. IDS

B. Firewall

C. Content filter

D. Load balancer

Explanation: Firewalls use ACLs (access control lists) to determine which traffic is allowed

through the firewall. All traffic entering or leaving the intranet passes through the firewall, which examines each message and blocks or allows the message depending on rules specified in the ACL.

QUESTION 3

Which from the below is used to determine how much bandwidth can be used by many protocols on the network?

A. Traffic shaping

B. High availability

C. Load balancing

D. Fault tolerance

Explanation: Traffic shaping is used to control the bandwidth used by network traffic. In a corporate environment, business-related traffic may be given priority over other traffic. Traffic can be prioritized based on the ports used by the application sending the traffic.

QUESTION 4

Which of the following is used to verify users connecting from remote locations? (Select TWO).

A. OSPF

B. VTP trunking

C. Virtual PBX

D. RADIUS

E. 802.1x

Explanation: A RADIUS server is a server with a database of user accounts and passwords used as a central authentication database for users requiring network access.

QUESTION 5

Which of the following provides accounting, approval, and verification via an organized powerful database, as well as, challenge/response and password encryption?

A. Multifactor authentication

B. ISAKMP

C. TACACS+

D. Network access control

Explanation: TACACS+ is a protocol that handles authentication, authorization, and accounting (AAA) services.

QUESTION 6

Which of the following should be configured for a technician that needs to create addresses in a DHCP pool so that only a select few servers always receive the same address.

A. Leases

B. Helper addresses

C. Scopes

D. Reservations

Explanation: A reservation is used in DHCP to ensure that a computer always receives the same IP address.

QUESTION 7

Ricky, an administrator, is setting up a DHCP server on a LAN segment which can connect to the companies local Intranet. What should Ricky configure in the DHCP scope to allow hosts on that LAN segment to connect using dynamic IP addresses? (Select THREE).

A. Default gateway

B. Subnet mask

C. Reservation

D. TFTP server

E. Lease expiration time of 1 day

F. DNS servers

G. Bootp

Explanation: To access the Internet, the client computers need to be configured with an IP address with a subnet mask (answer B) and the address of the router that connects the company network to the Internet. This is known as the ‘default gateway’ (answer A).

To be able to resolve web page URLs to web server IP addresses, the client computers need to be configured with the address of a DNS server (answer F).

QUESTION 8

An Mx Record pertains to which of the following:

A. Load balancer

B. FTP server

C. Firewall DMZ

D. Mail server

Explanation: A mail exchanger record (MX record) is a DNS record used by email servers to determine the name of the email server responsible for accepting email for the recipient’s domain

QUESTION 9

Which of the following protocols uses label-switching?

A. BGP

B. OSPF

C. IS-IS

D. MPLS

Explanation: MPLS directs data from one network node to the next based on short path labels rather than long network addresses, avoiding complex lookups in a routing table.

QUESTION 10

Which of the theses types of connectors is used to terminate DS3 connections?

A. 66 block

B. BNC

C. F-connector

D. RJ-11

Explanation: A DS3 (Digital Signal 3) is also known as a T3 line with a maximum bandwidth of 44.736 Mbit/s. Uses BNC connectors.

QUESTION 11

Which of the following topologies will not fail if there is an interruption on a single piece of the topology. However, to avoid congestions, the computers need to wait a couple of minutes to talk.

A. Star

B. Bus

C. Ring

D. Mesh

Explanation: If any computer or network cable fails in a token ring network, the remainder of the network remains functional in a ring topology.

QUESTION 12

Which of the following network topologies uses a central device with direct connections to all other nodes?

A. Star

B. Ring

C. Mesh

D. Bus

Explanation: The switch forms the central component of the star. All network devices connect to the switch.

QUESTION 13

Which topology design allows for the adding and removing of devices without disturbing the network while also having a central, single point of failure?

A. Ring

B. Star

C. Hybrid

D. Mesh

Explanation: The switch forms the central component of the star. All network devices connect to the switch.

QUESTION 14

Which of the following network infrastructures consists of two local area networks spanned across two locations only walking distance of each other?

A. CAN

B. WAN

C. PAN

D. MAN

Explanation: The range of CAN is 1KM to 5KM. If multiple buildings

have the same domain and they are connected with a network, then it will be considered as a CAN.

QUESTION 15

Which network implementation is smaller in scale to a local area network and supports file transfers between Bluetooth-enable devices?

A. PAN

B. LAN

C. WLAN

D. MAN

Explanation: It is a network of devices in the area of a person typically within a

range of 10 meters and commonly using a wireless technology such as Bluetooth or IR.

QUESTION 16

The IPv6 address ::1 refers to which of the following

A. Broadcast

B. Loopback

C. Classless

D. Multicast

Explanation: The loopback address is a special IP address that is designated for the software loopback interface of a computer.

QUESTION 17

From the following, can rightly be referred to as an IPv4 address?

A. 192:168:1:55

B. 192.168.1.254

C. 00:AB:FA:B1:07:34

D. ::1

Explanation: Each number is known as an octet as it represents eight binary bits. All four octets make up a 32-bit binary IPv4 address.

QUESTION 18

Which of the following is an IPv4 loopback address?

A. 10.0.0.1

B. 127.0.0.1

C. 172.16.1.1

D. 192.168.1.1

Explanation: Users specify the loopback address which will point back to the computer's TCP/IP network configuration. In IPv4, the loopback address is 127.0.0.1

QUESTION 19

Ricky a technician would like to monitor the improvement of the network in real-time infrastructure after upgrades. Which of the following should Ricky check?

A. Regression test

B. Speed test

C. Baseline

D. Statement of work

Explanation: In networking, baseline can refer to the standard level of performance of a certain device or to the normal operating capacity for your whole network.

QUESTION 20

What should you do if a RAID controller fails and is replaced with a different brand? How will you rebuild the server to the domain?

A. Vendor documentation

B. Recent backups

C. Physical IP address

D. Physical network diagram

Explanation: If the RAID controller fails and is replaced with a RAID controller with a different brand the RAID will break. We would have to rebuild a new RAID disk, access and restore the most recent backup to the new RAID disk.