Network +
Which of the following refers to a network that spans several buildings that are within walking distance of each other?
CAN
Which of the following uses classless subnet masks across a network?
CIDR
A technician has been given a list of requirements for a LAN in an older building using CAT6 cabling. Which of the following environmental conditions should be considered when deciding whether or not to use plenum-rated cables?
Ceiling airflow condition
A technician has narrowed down the cause of a problem to two possible sources. Which of the following should the technician do NEXT?
Choose the more likely cause and test to confirm.
Which of the following would be used in an IP-based video conferencing deployment? (Select TWO).
Codec and SIP
An administrator has created several virtual machines on the same host server and requires them to each be on separate VLANs. Which of the following should the administrator configure to meet this goal?
Create each VLAN on the host's virtual switch
Which of the following communication technologies would MOST likely be used to increase bandwidth over an existing fiber optic network by combining multiple signals at different wavelengths?
DWDM
Kurt, a network technician, has been troubleshooting a connectivity problem in the LAN room. He has diagnosed the problem and implemented a solution. Which of the following would be Kurt's NEXT step?
Document findings
Which of the following routing protocols can be utilized as both an IGP and EGP?
EIGRP
Which of the following is used to embed the MAC address of an Ethernet interface in a corresponding IPv6 address?
EUI-64
A network consultant arrives at a customer's site to troubleshoot their email server. The server is running a Linux operating system, but the consultant is only familiar with Windows operating systems. Which of the following troubleshooting steps should the consultant take?
Escalate the problem
A network technician has determined a managed network switch has failed. The technician knows how to install a new switch, but not how to properly configure it. Which of the following troubleshooting steps should the technician take NEXT?
Escalate the problem
Joe, a technician, has identified a problem, established and confirmed a theory, and has attempted to resolve the problem. Joe, however, does not appear to have the rights to make the needed changes. Which of the following should he do NEXT?
Escalate the problem.
A home user states during a basement remodel, one of the workers cut the network cable that goes from the modem to the WAP and nothing else has changed. According to the network troubleshooting methodology, which of the following is the NEXT step?
Establish a plan of action
Kurt, a user, cannot access any network resources. The technician has determined that the problem is isolated to Kurt, and that there have not been any changes to his workstation or switch port recently. Which of the following steps in the troubleshooting methodology should the technician do NEXT?
Establish a theory of probable cause
Which of the following uses types and codes rather than ports?
ICMP
Which of the following protocols is the BEST choice for retrieving email on multiple devices?
IMAP4
Which of the following reside at a minimum of Layer 3 of the OSI model? (Select TWO).
IP address and Router
The address 6FFE:FFFF:0000:2F3B:04AC:00FF:FEBE:5C4A is an example of which of the following?
IPv6
Which of the following uses a 128-bit addressing scheme?
IPv6
Which of the following uses eight groups of characters for addressing?
IPv6
Which of the following is a link state routing protocol?
IS-IS
After Kurt, a technician, has established a plan of action to resolve the problem, which of the following steps should he perform NEXT?
Implement the solution or escalate as necessary.
Kim, a network technician, is troubleshooting a problem and has just established a plan of action to resolve the problem. Which of the following is the NEXT step in the troubleshooting methodology?
Implement the solution or escalate as necessary.
A technician finds that the network card is no longer functioning. At which of the following OSI layers is the problem occurring?
Layer 1
Lisa, an administrator, attempts to open a web page and sees the following error: 'Error 404: Page not found'. She then uses the ping command and finds that the default gateway cannot be pinged. At which of the following layers does the problem MOST likely reside?
Layer 1
At which of the following layers of the OSI model does an unmanaged switch operate?
Layer 2
Frame relay occurs at which of the following layers of the OSI model?
Layer 2
The MAC address of a network device is used to communicate at which of the following OSI layers?
Layer 2
Multiprotocol Label Switching (MPLS) operates at which of the following layers of the OSI model? (Select TWO).
Layer 2 and Layer 3
IP address based routing occurs on which of the following layers of the OSI model?
Layer 3
The protocols that use a three way handshake to transfer information can be found within which layer of the OSI model?
Layer 4
At which of the following layers does HTML operate?
Layer 7
A SQL server needs several terabytes of disk space available to do an uncompressed backup of a database. Which of the following devices would be the MOST cost efficient to use for this backup?
NAS
Which of the following protocols are used to provide accurate time to network devices?
NTP
Which of the following protocols is used to send time synchronization updates on a given network?
NTP
An IP address is encapsulated at which of the following layers of the OSI model?
Network
Data arranged into packets would be on which of the following layers of the OSI model?
Network
At which of the following layers do frames exist? (Select TWO).
OSI model Data link layer and TCP/IP model Network Interface layer
Which of the following protocols are used to view and send mail from a local host off of a remote server? (Select TWO).
POP3 and IMAP4
Which of the following records allows for reverse DNS lookups?
PTR
Which of the following exist at layer three of the OSI model? (Select TWO).
Packet and Router
An administrator has added QoS settings to the LAN switches prioritizing RTP. Which of the following systems is the Administrator MOST concerned with in this scenario?
Phone communications
A crossover cable is MOST commonly associated with which of the following layers of the OSI model?
Physical
If a NIC does not have a link light, there is a failure at which of the following OSI layers?
Physical
Which of the following layers of the OSI model make up the Network Interface layer of the TCP/IP model? (Select TWO).
Physical and Data Link
Which two layers of the OSI model make up the TCP/IP model Network Interface layer?
Physical and Data Link
Standards such as JPEG and ASCII operate at which of the following OSI model layers?
Presentation
Which of the following defines an IP address that is NOT routed on the Internet?
Private
Which of the following protocols uses port 3389?
RDP
Which of the following uses distance vector algorithms to determine the BEST network route to a destination address?
RIP
Zach, a network administrator, wants to separate the network into broadcast domains. Which of the following can he use? (Select TWO).
Routers and VLANs
Which of the following protocols is commonly used for VoIP technology?
SIP
Which of the following protocols would the network administrator use to protect login credentials when accessing a router terminal session?
SSH
Which of the following is used to prevent Layer 2 switching loops within a local area network?
STP
Which of the following WAN technologies is associated with high latency?
Satellite
Which of the following is a purpose of a VLAN?
Segments broadcast traffic
In order for switching loops to be automatically disabled, which of the following needs to be implemented?
Spanning-tree protocol
Which of the following helps prevent routing loops?
Split horizon
A network topology that utilizes a central device with point-to-point connections to all other devices is which of the following?
Star
A technician is developing a shortcut sheet for the network to be able to assist in future troubleshooting scenarios. Which of the following should the network devices have to ease manageability efforts?
Static IPs
Which of the following BEST describes how a layer 2 switch functions?
Switches packets within the same subnet based on MAC addresses
Which of the following protocols does DNS utilize on port 53?
TCP
A network administrator notices that load balancing is not working properly on the web cluster as previously configured. In speaking with management, a change to the IP addressing scheme was made yesterday which possibly affected one member of the cluster. Due to the timing of the events, the administrator theorizes that this change caused the problem. Which of the following should the administrator do NEXT?
Test the theory by analyzing logs
A user is having difficulty connecting a laptop to the company's network via a wireless connection. The user can connect to the network via a wired NIC. The technician thinks the user's wireless NIC has failed. Which of the following network troubleshooting methodology steps should the technician perform NEXT?
Test the theory to determine the cause.
For which of the following reasons could a single server's NIC transmit packets from multiple MAC address sources?
The server contains several virtual machines and the MAC addresses are from the virtual machines.
Which of the following TCP/IP and OSI model layers retransmits a TCP packet if it is not received successfully at its destination?
The transport OSI model layer and the transport TCP/IP model layer.
Lisa, a network technician, is attempting to map a FQDN to an internal server at the address of 10.0.0.15 without NAT/PAT. Which of the following is the reason this will ultimately not work
This is a private address which cannot be seen by external users.
A technician has verified that a recent loss of network connectivity to multiple workstations is due to a bad CAT5 cable in the server room wall. Which of the following tools can be used to locate its physical location within the wall?
Toner probe
Which of the following is used to define how much bandwidth can be used by various protocols on the network?
Traffic shaping
Which of the following is the definition of a DNS server?
Translates FQDN's to IP addresses
Which of the following network elements enables unified communication devices to connect to and traverse traffic onto the PSTN?
UC gateway
After a new firewall is installed, users report that they do not have connectivity to the Internet. The output of the ipconfig command shows an IP address of 169.254.0.101. Which of the following ports would need to be opened on the firewall to allow the users to obtain an IP address? (Select TWO).
UDP 67 and UDP 68
Which of the following allows for groups of ports on the same switch to operate as a part of different segmented networks?
VLAN
Logically separating the ports on a switch without physically separating them can be done using which of the following?
VLANs
A user reports intermittent network connectivity from their desktop PC. A technician determines the cause to be a bad wall jack and fixes the jack. Which of the following should the technician do NEXT?
Verify functionality
Joe has a small office and is looking to replace his phone system with a lower cost solution that requires minimal in-house support. Which of the following is the BEST choice?
Virtual PBX
An organization is considering migrating a datacenter to a different operating system. Which of the following could the organization use to try out the new OS before making a wide-scale deployment?
Virtual Servers
A company's database software runs in the cloud. The device hosting the software is an example of which of the following?
Virtual server
Which of the following is the common port used for IMAP?
143
Which of the following is the MAXIMUM hop count for RIP before the network is considered converged?
15
Which of the following would be considered a Class C private address?
192.168.50.125
How many collision domains and broadcast domains are present on a 24-port switch with no VLAN assignments?
24 collision domains, 1 broadcast domain
An administrator notices SMTP traffic is being blocked by the company firewall. Which of the following ports should be opened?
25
Which of the following OSI layers is responsible for encrypting HTTPS traffic?
6
Which of the following default ports are used with DHCP? (Select TWO).
67 and 68
DHCP uses which of the following ports by default?
68
Which IEEE protocol is used with VLAN technology?
802.1q
Which of the following is used to describe trunking VLANs on a network?
802.1q
Which of the following DNS record types will be used for mail transfer if the MX record is not found?
A
Which of the following DNS records is used in conjunction with 192:168::1:10?
AAAA
Which of the following services would have assigned the IP address 169.254.1.89?
APIPA
When convergence on a routed network occurs, which of the following is true?
All routers learn the route to all connected networks
Which of the following is MOST likely to use an RJ-11 connector to connect a computer to an ISP using a POTS line?
Analog modem
At which layer of the OSI and TCP/IP model would HTTP and FTP be found?
Application
Which TCP/IP model layer does the OSI model layer named 'session' respond to?
Application
Which of the following OSI layers BEST describes where an HTTP proxy operates?
Application
Which of the following TCP/IP model layers combines four OSI model layers?
Application Layer
A firewall that operates at Layer 7 of the OSI model is known as a(n):
Application level.
Which of the following exterior routing protocols uses an algorithm to determine the quickest route to a destination?
BGP
