CompTIA Network+ Question A-31

A network technician has received comments from several users that cannot reach a particular website. Which of the following commands would provide the BEST information about the path taken across the network to this website?

A. ping
B. netstat
C. telnet
D. tracert

Correct Answer: D

Explanation:
The tracert command is used to determine the amount of hops a packet takes to reach a destination. It makes use of ICMP echo packets to report information at
every step in the journey. This is how the path taken across the network is obtained.

CompTIA Network+ Question A-30

Which of the following protocols is used to encapsulate other network layer protocols such as multicast and IPX over WAN connections?

A. MPLS
B. ESP
C. GRE
D. PPP

Correct Answer: C

CompTIA Network+ Question A-29

A network engineer is dispatched to an employee office to troubleshoot an issue with the employee’s laptop. The employee is unable to connect to local and remote resources. The network engineer flips the laptop’s wireless switch on to resolve the issue. At which of the following layers of the OSI model was the issue resolved?

A. Layer 1
B. Layer 2
C. Layer 3
D. Layer 4
E. Layer 7

Correct Answer: A

Explanation:
The bottom layer of the OSI reference model is Layer 1, the physical layer.
The physical layer is the layer that defines the hardware elements of a network. These elements include:
Network Interface Cards
Network topology Network cabling
The type of signals used for data transmittions
In this question, the network engineer flipped the laptop’s wireless switch on to resolve the issue. The laptop was unable to connect to the wireless network because the wireless network interface card was switched off. Switching the wireless network interface card on enabled the laptop to connect to the wireless network. The wireless network interface card is a physical layer device.

CompTIA Network+ Question A-28

A network technician is troubleshooting a network connection error, when pinging the default gateway no reply is received. The default gateway is found to be functioning properly but cannot connect to any workstations. At which of the following OSI layers could the problem exist? (Select TWO)

A. Presentation
B. Transport
C. Session
D. Data link
E. Application
F. Physical

Correct Answer: DF

CompTIA Network+ Question A-26

A technician installs a new piece of hardware and now needs to add the device to the network management tool database. However, when adding the device to the tool using SNMP credentials, the tool cannot successfully interpret the results. Which of the following would need to be added to the network management tool to allow it to interpret the new device and control it using SNMP?

A. TRAP
B. GET
C. MIB
D. WALK

Correct Answer: C

CompTIA Network+ Question A-25

A contractor is setting up and configuring conference rooms for a convention. The contractor sets up each room in the conference center to allow wired Internet access going to individual tables. The contractor measured the distance between the hotel’s patch panel to the jack, and the distance is within Cat 5e specifications. The contractor is concerned that the room will be out of specification if cables are run in each room from the wall jacks. Which of the following actions should the contractor take to ensure the cable runs meet specifications and the network functions properly?

A. Place a switch at the hotel’s patch panel for connecting each room’s cables
B. Place a switch on each table to ensure strong connectivity
C. Place repeaters between the patch panel and the rooms
D. place a switch at the wall jack and run the cables in the room from there

Correct Answer: A

CompTIA Network+ Question A-24

Which of the following PDUs is used by a connectionless protocol?

A. Frames
B. Segments
C. Streams
D. Datagram

Correct Answer: D

Explanation:
UDP is a connectionless transport protocol that operates in the transport layer of the OSI model. UDP stands for User Datagram Protocol. PDUs (Protocol Data Units) used by UDP are known as Datagrams.

CompTIA Network+ Question A-23

Peter, a network technician, is setting up a DHCP server on a LAN segment. Which of the following options should Peter configure in the DHCP scope, in order to allow hosts on that LAN segment using dynamic IP addresses, to be able to access the Internet and internal company servers? (Select THREE).

A. Default gateway
B. Subnet mask
C. Reservations
D. TFTP server
E. Lease expiration time of 1 day
F. DNS servers
G. Bootp

Correct Answer: ABF

Explanation:
The question states that the client computers need to access the Internet as well as internal company servers. 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).

CompTIA Network+ Question A-22

A technician is connecting a NAS device to an Ethernet network. Which of the following technologies will be used to encapsulate the frames?

A. HTTPS
B. Fibre channel
C. iSCSI
D. MS-CHAP

Correct Answer: C

Explanation:
A NAS or a SAN will use either iSCSI or Fiber Channel. In this question, the NAS is connected to an Ethernet network. Therefore, iSCSI will most likely be used (Fiber Channel over Ethernet (FCoE) can be used but is less common). ISCSI means Internet SCSI. ISCSI uses TCP (Transmission Control Protocol) which enables it to be used over TCP/IP networks such as Ethernet.
For Fiber channel, a separate Fiber Channel network would be required unless FCoE is used.