CompTIA CompTIA Mobility+ N10-005 Questions & Answers

• Question 751:

  A proxy server would MOST likely be installed to provide which of the following functions? (Select TWO).

  A. Combined DNS and DHCP hosting

  B. Encryption

  C. Content filtering

  D. Fault tolerance

  E. Website caching

  Correct Answer: CE

  A content-filtering web proxy server provides administrative control over the content that may be relayed in one or both directions through the proxy.

  A caching proxy server accelerates service requests by retrieving content saved from a previous request made by the same client or even other clients.

• Question 752:

  Which of the following is always true when a router selects a destination?

  A. The default gateway is selected over any other static or dynamic route.

  B. The shortest route is always selected.

  C. The most specific route is selected over the default gateway.

  D. A dynamic route is selected over a directly attached network.

  Correct Answer: C

  Router always looks for the most closely matched route for forwarding the packet. For example if there are two routes in your router and you have to send a packet to a host with an ip 10.10.10.10 then it will forward packet to 192.168.1.10 rather than 192.168.1.1:

  Network Destination Netmask Gateway

  0.0.0.0 0.0.0.0 192.168.1.1

  10.10.10.0 255.255.255.0 192.168.1.10

• Question 753:

  Which of the following is a common physical network topology?

  A. Cross-over

  B. Loopback

  C. Star

  D. Straight

  Correct Answer: C

  A star network consists of one central switch, hub or computer, which acts as a conduit to transmit messages. This consists of a central node, to which all other nodes are connected; this central node provides a common connection point for all nodes through a hub. In star topology, every node (computer workstation or any other peripheral) is connected to central node called hub or switch.

• Question 754:

  Which of the following switch features allows for both incoming and outgoing data across physical ports at the same time?

  A. Burst-frame

  B. Full-duplex

  C. Half-duplex

  D. VoIP

  Correct Answer: B

  A full-duplex (FDX), or sometimes double-duplex system, allows communication in both directions, and, unlike half-duplex, allows this to happen simultaneously. Land-line telephone networks are full-duplex, since they allow both callers to speak and be heard at the same time

• Question 755:

  Which of the following is used to register and resolve IP addresses with their plain language equivalents?

  A. Proxy server

  B. DNS server

  C. Brouter equipment

  D. DHCP server

  Correct Answer: B

  DNS server translate (resolution) the human-memorable domain names and hostnames into the corresponding numeric Internet Protocol (IP) addresses.

• Question 756:

  Which of the following can function in an unsecure mode?

  A. SNMPv3

  B. SSH

  C. SSL

  D. SCP

  Correct Answer: A

  SNMPv3 makes no changes to the protocol aside from the addition of cryptographic security, it looks much different due to new textual conventions, concepts, and terminology.SNMPv3 primarily added security and remote configuration enhancements to SNMP

• Question 757:

  Which of the following OSI layers allows users to access network services such as file sharing?

  A. Layer 1

  B. Layer 3

  C. Layer 4

  D. Layer 7

  Correct Answer: D

  Basically File Transfer protocol (FTP) is responsible for file transfer which lies under Application layer (Layer 7) of OSI layers.

• Question 758:

  If a NIC does not have a link light, there is a failure at which of the following OSI layers?

  A. Physical

  B. Session

  C. Data link

  D. Presentation

  Correct Answer: A

  The NIC does not have light refers to a situation that there could be a fault in the LAN cable or the ports are down and all of these fall under the physical layer. To make it simple, it falls in physical layer because blinking lights refers to the physical connectivity.

• Question 759:

  While working on a PC, a technician notices 0.0.0.0 in the routing table. Which of the following does this indicate?

  A. It is the default route.

  B. This is the address for the DHCP server.

  C. The PC has not been assigned an IP address.

  D. The firewall is down.

  Correct Answer: A

  The address 0.0.0.0 generally means "any address". If a packet destination doesn't match an individual address in the table, it must match a 0.0.0.0 gateway address. In other words, default gateway is always pointed by 0.0.0.0:

• Question 760:

  Enterprise IP routing policy is MOST clearly depicted in which of the following configuration management documents?

  A. Logical network diagrams

  B. Physical network diagrams

  C. Wiring schematics

  D. Group security role assignments

  Correct Answer: A

  A logical network diagram illustrates the network architecture of a group of interconnected computers and other devices, such as printers, modems, switches, routers, and even mobile devices. These electronic components form the physical network that provides local area network (LAN) and wide area network (WAN) access to users. Once you know the layout and you have an idea about the packet flow then your job becomes easy and you can create an action plan to go for the implementation.