Vol 2 URE Flashcards
1
Q
- (201) At what Open System Interconnection (OSI) layer are virtual circuits established, maintained and terminated?
a. Network.
b. Physical.
c. Data link.
d. Transport
A
d. Transport
2
Q
- (201) Which of the following is an example of a video compression standard?
a. Motion Picture Experts Group–4 (MPEG–4).
b. Joint Photographic Experts Group (JPEG).
c. File Transfer Protocol (FTP).
d. G.711.
A
a. Motion Picture Experts Group–4 (MPEG–4).
3
Q
- (202) In the Open System Interconnect (OSI) model, a layer will communicate with three other OSI layers. Which one is not one of those layers?
a. Layer above.
b. Layer below.
c. Lowest layer.
d. Peer layer.
A
c. Lowest layer.
4
Q
- (203) What data communication protocol uses characters or “handshaking” to control the link and represent information?
a. Asynchronous protocol.
b. Binary synchronous protocol.
c. Synchronous Data Link Control (SDLC).
d. High-Level Data Link Control (HDLC).
A
b. Binary synchronous protocol.
5
Q
- (203) In binary-synchronous protocol, which characters establishes and maintains character synchronization prior to the message block and during transmission?
a. SEQ.
b. SYN.
c. STX.
d. EST.
A
b. SYN.
6
Q
- (203) Which data communication protocol is based on bits and the position of the bits?
a. Character-oriented.
b. Bit-oriented.
c. Network.
d. Routing.
A
b. Bit-oriented.
7
Q
- (203) Which data communication protocol is a transmission code that supports a variety of link types and topologies?
a. Asynchronous protocol.
b. Binary synchronous protocol.
c. Synchronous Data Link Control (SDLC).
d. High-Level Data Link Control (HDLC)
A
c. Synchronous Data Link Control (SDLC).
8
Q
- (204) Which network layer protocol matches a known Internet protocol (IP) address for a destination device to a Media Access Control (MAC) address?
a. IP.
b. Address Resolution Protocol (ARP).
c. Reverse Address Resolution Protocol (RARP).
d. Internet Control Message Protocol (ICMP).
A
b. Address Resolution Protocol (ARP).
9
Q
- (204) Which Network layer protocol provides messaging that can help with troubleshooting?
a. Internet protocol (IP).
b. Address Resolution Protocol (ARP).
c. Reverse Address Resolution Protocol (RARP).
d. Internet Control Message Protocol (ICMP).
A
d. Internet Control Message Protocol (ICMP).
10
Q
- (204) Which Transport layer protocol provides reliable data delivery services?
a. Internet Protocol (IP).
b. User Datagram Protocol (UDP).
c. Transmission Control Protocol (TCP).
d. Internet Control Message Protocol (ICMP).
A
c. Transmission Control Protocol (TCP).
11
Q
- (204) Which Application layer protocol is used to synchronize the clocks of computers on a network?
a. Simple Network Management Protocol (SNMP).
b. Dynamic Host Configuration Protocol (DHCP).
c. Network Time Protocol (NTP).
d. Packet Internet Groper (PING).
A
c. Network Time Protocol (NTP).
12
Q
- (205) Which network Class has the most addresses for hosts?
a. A.
b. B.
c. C.
d. D.
A
a. A.
Class A networks each with 16,777,214 possible hosts for a total of 2,147,483,648 unique
IP addresses.
13
Q
- (205) How many subnet bits are required to support 90 subnets on a Class B network?
a. Three.
b. Five.
c. Seven.
d. Nine.
A
c. Seven.
14
Q
- (206) Internet protocol version 6 (IPv6) addresses are represented by
a. 8 groups of dotted decimal numbers.
b. 8 groups of hexadecimal numbers.
c. 4 dotted decimal numbers.
d. 128 decimal numbers.
A
b. 8 groups of hexadecimal numbers.
15
Q
- (206) Teredo has four tunneling components. Which one is not one of them?
a. Host-specific relay.
b. Client.
c. Server.
d. Agent.
A
d. Agent.
16
Q
- (207) Which device has multiport connectivity that directs data between nodes on a network?
a. Bridge.
b. Router.
c. Gateway.
d. Repeater.
A
b. Router.
17
Q
- (207) Which routing protocol do internet backbones use?
a. Border Gateway Protocol (BGP).
b. Open Shortest Path First (OSPF).
c. Routing Information Protocol (RIP).
d. Enhanced Interior Gateway Routing Protocol (EIGRP).
A
a. Border Gateway Protocol (BGP).
18
Q
- (208) Which router port is used for initial configuration?
a. Auxiliary.
b. Console.
c. Ethernet.
d. Telnet.
A
b. Console.
19
Q
- (208) When configuring a router, you control access to privileged EXEC mode by configuring which password?
a. Line console.
b. Line vty.
c. Enable.
d. Secret.
A
c. Enable.
20
Q
- (208) On a router’s serial interface connection, what provides the timing signal for the communication link?
a. Data communications equipment.
b. Data terminal equipment.
c. Internal oscillator.
d. Atomic clock.
A
a. Data communications equipment.
21
Q
- (209) Virtual Private Networks (VPNs) allow the AF to extend network resources across a/an
a. Department of Defense network.
b. Air Force network.
c. local area network.
d. a public network.
A
d. a public network.
22
Q
- (210) Which topology defines the way in which devices communicate and data is transmitted throughout the network?
a. Physical.
b. Logical.
c. Hybrid.
d. Star.
A
b. Logical.
23
Q
- (210) Which topology has the stations connected in the form of a circle?
a. Bus.
b. Ring.
c. Star.
d. Hybrid.
A
b. Ring.
24
Q
- (210) Which topology combines two or more different physical topologies in a single network?
a. Bus.
b. Ring.
c. Star.
d. Hybrid.
A
d. Hybrid.
25
Q
- (211) Which device subdivides a network into smaller logical pieces, or segments?
a. Switch.
b. Firewall.
c. Gateway.
d. Repeater.
A
a. Switch.
